. Duplicate elements Add and remove elements . {'B'} 0.09754 0.65574 0 Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. rmRows = rowNums(2, ~isnan(rowNums(2,:))); Thank you. It's expected that they are cell arrays with the same size. Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. Best 750-1000 Watt PSU. In this article, we will discuss how to find duplicate values and their indices within an array in MATLAB. Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. Remove duplicate rows in table - MATLAB Answers - MATLAB Central Trial software Remove duplicate rows in table Follow 214 views (last 30 days) Show older comments DavidL88 on 20 Jan 2021 0 Commented: DavidL88 on 28 Jan 2021 Accepted Answer: Adam Danz Hi I have a table with four columns and roughly 45,000 rows (example below). Remove duplicates from table with string, datetime, double 174 views (last 30 days) Show older comments Harry Lindner on 25 Jun 2015 Commented: Sean de Wolski on 26 Jun 2015 Accepted Answer: Sean de Wolski cat.csv The data is attached, also below. To my eyes anyways, the above data are all for the same test for the first three and then the second set of three; but the fourth column data values are unique other than by happenstance it appears that the last @250ms is same in second and fourth columns as the first @500ms. I split this column after the second ms and re-ran your code, using the second new column as the test idenifier, so that the two rows are now identified as the same test. 1. {'A'} 0.81472 0.14189 0 I'm getting the below message. The effect as you demonstrate is what I'm looking for. MathWorks est le leader mondial des logiciels de calcul mathmatique pour les ingnieurs et les scientifiques. > For rowNum1 and 2 the same vales are there. Ready to optimize your JavaScript with Rust? {'C'} 0.48538 0.65548 0.33 So in this case the new table would look like this: B = table([1;2;3;3;3;4], [ 0;0;0;0;1;1], [1999;1999;1999;2000;2001;2000]); I can't come up with anything other than a solution involving a nested loop, which will have horrible performance on larger sets of data. The rubber protection cover does not pass through the hole in the rim. tmp3 = []; for i=1:numel (tmp2 (:,1))-1 if tmp2 (i,1) == tmp3 tmp2 (i,:) = []; end tmp3 = tmp2 (i,1); end But all of the methods seem to omit the first row to remove. {'C'} 0.15761 0.75774 0 . Start Hunting! Check out my Recommended Power Supplies for RTX 3090 Ti GPUs below. Are you sure they are duplicates? You have removed too much. Now call unique like you did, but use the flag first to grab the first unique: Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. elegant: T (T.b <= 5,:) = []; Share Follow answered Nov 15, 2017 at 20:45 If you look at the first example you'll see that in the first column of the duplicate rows the names are slight different (where the ms times are). Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. Remove the first row from the table. It will return a logical column vector indicating which test groups do not contain any col4 values less than 0.05. rowNum3 = arrayfun(@(i) {find(testID==i & TableMain.T2<0.50)}, unique(testID)); rowNums4 = cell2mat(cellfun(@isempty,rowNum3)). (p. vanashanugat ) 2. Remove duplicates from table with string, datetime, double 156 views (last 30 days) Show older comments Harry Lindner on 25 Jun 2015 0 Link Translate Commented: Sean de Wolski on 26 Jun 2015 Accepted Answer: Sean de Wolski cat.csv The data is attached, also below. Can I email you the table rather than uploading it here? There may be some small differences between the values that matlab does not show by default. your location, we recommend that you select: . The mathwork contact button does not support uploads. I have a table with four columns and roughly 45,000 rows (example below). The question is whether their floating point representation is causing a problem with the equality tests. None get removed using unique () The matrix is an example, but generally if two rows have the same value in the first column I have to remove the second one. Second, those trailing 0s are suspicious. SeaDek Certified Fabricators are factory trained to specialize in the entire SeaDek process. [testID, testNames] = findgroups(T.Test); rowNum1 = arrayfun(@(i) {find(testID==i & T.col4==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.col4==0.50, 2)}, unique(testID)); rowNums = cell2mat(cellfun(@(c){padarray(c,[2-numel(c),0],NaN. {'A'} 0.12699 0.91574 0.25 the post title is misleading - you don't want to remove duplicate rows, you want to remove rows with the same contents, irrespective of order, You may receive emails, depending on your. It doesn't matter that. Could you attach a mat file containing the table? This is done by transferring only the unique rows to the newly created table and deleting the original one (with the remaining duplicate rows). Should it not be 39, 246, 453, etc? > For rowNum1 and 2 the same vales are there. What matters is if those values equal 0.25 or 0.50. which would also explain the trailing 0s. {'B'} 0.2785 0.035712 0.33 Unable to complete the action because of changes made to the page. 5 Most common ways to say hello in French Bonjour (hello, good morning) Salut! The tests do not have to be in order. 'Perm t-test equal [250ms,500ms 92, 108]: Avg: 11_right FCL', 'Perm t-test equal [500ms,900ms 92, 108]: Avg: 11_right FCL'. [1999;1999;1999;2000;2001;2002;2000;2001;2004;2000;2005;2005;2001]. For rowNum1 and 2 the same vales are there (both are listed as 648x1 cell same as before with first script (with 39 and 40, the first set of duplicates, listed there too). Accelerating the pace of engineering and science. Does not work. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. (p. maurusi ) 5. 92.0000 166.0000 71.0000 173.0000 55.0000 235.0000 72.6667 191.3333]; I want to remove the redundant rows from A. I double-checked and confirmed this on one duplicate. remove duplicates missing in excel 365 Hereditary Meaning in Hindi Adjective 1. ( Hi !) I had a question and got an answer yesterday about removing doubling rows in a matrix, and I can't figure out why it omits certain rows in a matrix. Not at all clear what is the result wanted from this dataset, to me, anyways contains the test names which can be strings, character vectors, categoricals, or numeric. Accelerating the pace of engineering and science. I copy a sample of the table below before running this code. 3million rows x 50 columns. I adapted this to my dataset and it seems to erase any row with 0.25 or 0.5. When inspecting gg we see that there are still duplicate rows. I'm not sure why I got a different result. Please help, as I already spent some hours trying to fix it myself (I suck at programming.) Did the apostolic or early church fathers acknowledge Papal infallibility? {'C'} 0.97059 0.74313 0.25 How to delete duplicate rows in SQL Server? I figured it out. The question is whether their floating point representation is causing a problem with the equality tests. Excel spreadsheet Create an intermediate table that has the same structure as the source table and . MathWorks is the leading developer of mathematical computing software for engineers and scientists. Bonsoir (Good evening) Coucou! {'C'} 0.95717 0.39223 0.25 Sign in to comment. [testID, testNames] = findgroups(T.Test); rowNum1 = arrayfun(@(i) {find(testID==i & T.col4==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.col4==0.50, 2)}, unique(testID)); rowNums = cell2mat(cellfun(@(c){padarray(c,[2-numel(c),0],NaN. rowNum3 finds those Tests with a value < 0.05 in T2. The arg_max () aggregated function can be used to filter out the duplicate records and return the last record based on the timestamp (or another column). CGAC2022 Day 10: Help Santa sort presents! I have a table with a number of columns and would like to delete some rows based on some conditions. B=[A(A.Size==0,:);A([ia+find(A.Size==0,1, I'm guessing the selection on Size==1 is only artificial given no duplicates by inspection. Other MathWorks country Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. rev2022.12.11.43106. offers. your location, we recommend that you select: . Choose a web site to get translated content where available and see local events and For rowNum1 and 2 the same vales are there (both are listed as 648x1 cell same as before with first script (with 39 and 40, the first set of duplicates, listed there too). Can anyone advise how I delete the first of these rows (the first one of the .25 and the first one of the 0.5 rows) for every statistical test? Other MathWorks country It returns back exactly A. identical. To delete duplicate rows on the basis of multiple columns, specify all column names as a list. rowNum1 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.25)<0.00001, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.50)<0.00001, 2)}, unique(testID)); % ---> ---> ---> ---> ---> ---> ---> ---> ^^^^^^^^^^^^^^^^^^^^^^^. %use default tolerance. To remove duplicate rows using the advanced filter, select the whole dataset. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. TIA. rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 2)}, unique(testID)); It shouldn't be a floating point as those numbers represent exact time-stamps. To my eyes anyways, the above data are all for the same test for the first three and then the second set of three; but the fourth column data values are unique other than by happenstance it appears that the last @250ms is same in second and fourth columns as the first @500ms. This method is simple. Unable to complete the action because of changes made to the page. You can specify your own. Find centralized, trusted content and collaborate around the technologies you use most. I ran that second script (adapted below). Remove duplicate rows from matrix - MATLAB Answers - MATLAB Central Remove duplicate rows from matrix Show older comments MC on 14 May 2017 Vote 1 Link Translate Edited: Stephen23 on 6 Mar 2022 Accepted Answer: Stephen23 Hello I have a 2xN matrix where each column represent the x and y coordinates of a 2D point. Example: a = [1,2; 3,4; 5,6; 1,2; 7,8] a = 1 2 3 4 5 6 1 2 7 8 %. There is a duplicate of all 0.25 and 0.5s. your location, we recommend that you select: . So if none of the cells below in col3 for the 'A' test have a value that is <0.05 then remove all rows for 'A'? Or maybe you meant that they have the same values as the previous version which would only happen if all tests had duplicates for .25 and .50. {'A'} 0.90579 0.42176 0.25 ( Hi ! Based on To omit any rows in a table that are duplicated, use the unique function. In this post I explain advanced manipulation of locals via macro lists, which allow us to get the number of elements in a local, handle duplicate elements, sort (and shuffle) elements and perform other logical operations. The effect as you demonstrate is what I'm looking for. ans = 1 2 3 4 5 6 7 8 The order doesn't matter. Solution #2: Handle duplicate rows during query. rowNum3 finds those Tests with a value < 0.05 in T2. For every statistical test the values in the 4th column are duplicated (at .25 and 0.5). Or maybe you meant that they have the same values as the previous version which would only happen if all tests had duplicates for .25 and .50. to have the same values in both variables unless the result is an empty array (no matches). (p. paranapariyaN ) 4. It worked perfectly and removed all the duplicate rows. It didn't make any change to the table. I thought this might be due to the dimensions being different in that the previous code expected two matches/duplicates but this code is open to a variable number of matches? {'B'} 0.2785 0.035712 0.33 So in this case the new table would look like this: B = table ( [1;2;3;3;3;4], [ 0;0;0;0;1;1], [1999;1999;1999;2000;2001;2000]); B.Properties.VariableNames = {'ID' 'Size' 'Date'}; Thanks! {'C'} 0.15761 0.75774 0 and nothings seems to work. offers. The first column is the name of statistical test (of which there are several hundred different tests). Examples of frauds discovered because someone tried to mimic a random sequence, Counterexamples to differentiation under integral sign, revisited. Next, go to Data in the Sort & Filte r group and click on Advanced. You could upload it and remove it after I confirm that I received it. If I remove duplicates in Excel, 4 rows of data get removed. {'B'} 0.54688 0.84913 0.25 Choose a web site to get translated content where available and see local events and Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. Then click on Unique Records Only. Using the size or count method with pandas. warning, if position in the row is important then you dont want this. Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. Drops the duplicate table. Please help, as I already spent some hours trying to fix it myself (I suck at programming) and nothings seems to work. matlab: duplicate rows removal [duplicate]. 7. Given that rowNum1 and 2 extracted these cells they should be equal to .25 and .5 exactly? rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 1)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 1)}, unique(testID)); First, please see my previous comment which I may have added while you were typing your response (I updated my solution). {'A'} 0.63236 0.95949 0.5 If ID is the same and within that ID the size = 1 then if there are more than one rows, keep the row that contains the earliest Date for that ID. I've also tried to do it in different ways, for example; [~, III, ~] = unique (M,'first','rows'); %removing double points III = sort (III); pleb = M (III,:); gg=sort (pleb); But they either delete non duplicate data, or delete too few data. Reload the page to see its updated state. Looking through values listed in rowNum1 and 2, both rows in T that match the values 0.25 and 0.5 seem to be identified and are listed. - rayryeng May 7, 2017 at 19:40 Add a comment 1 Answer Sorted by: 1 You can use any for this purpose as follows: A = A (any (A,2),:); % any (A,2) gives the logical indices of the rows whose at least one element is non-zero Share Improve this answer Follow edited May 7, 2017 at 14:16 {'B'} 0.96489 0.67874 0.5 Tnew ( [18,20,21],:) = []; size (Tnew) ans = 12 103 8 The table contains information on 103 patients now. Table.RemoveRows(table as table, offset as number, optional count as nullable number) as table About. Dropbox), send the link, and then remove it from the cloud service. Please help to apply the logic. What matters is if those values equal 0.25 or 0.50. which would also explain the trailing 0s. If you look at the first example you'll see that in the first column of the duplicate rows the names are slight different (where the ms times are). in Untitled4>@(i){find(testID==i&TableMain.T2<0.50)} (line 6), below returns a logical vector the same size as. So if none of the cells below in col3 for the 'A' test have a value that is <0.05 then remove all rows for 'A'? Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. Now the solution only removes the rows if the .25 or .50 is a duplicate within each test. https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275414, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#answer_602570, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275426, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275483, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275493, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275503, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275633, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275648, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275658, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276763, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276863, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276993, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1280992, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281157, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281292, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281352, https://www.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1292288. Can anyone help. {'A'} 0.81472 0.14189 0 Are you sure they are duplicates? The 0.25 values for this section are in rows 39 and 40 of the table T. FCL' 0.449377841816944 0.653086728317921 0.242187500000000, FCL' 0.379117217892076 0.705573606598350 0.246093750000000, FCL' 0.411715894798510 0.683829042739315 0.250000000000000, FCL' 0.411715894798510 0.680329917520620 0.250000000000000, FCL' 0.564101287653156 0.573856535866034 0.253906250000000, FCL' 0.794131830628734 0.429142714321420 0.257812500000000, This is the same section after running the code. indicating which test-names are flagged. If I remove duplicates in Excel, 4 rows of data get removed. It's expected that they are cell arrays with the same size. A default count of 1 is used if the count parameter isn't provided. How many transistors at minimum do you need to build a general-purpose computer? I don't see the duplication in the sample dataset? The solution above removes duplicate values (cells) from matrix (and returns a vector), but I need to remove duplicate rows and return a matrix the same matrix without duplicate rows. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. there are 2 rows for same data. The duplicate rows remained after running it this time. Moves the rows in the duplicate table back into the original table. Second, those trailing 0s are suspicious. (I'm presuming the 0.25 and 0.5 are confidence limits of the test and not values of the statistic as Adam presumed below). Deletes all rows from the original table that are also located in the duplicate table. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Thanks. If you go to France, the single most common word for hello is " Bonjour ". Something can be done or not a fit? Sorry my mistake. Certified Fabricators digitally pattern boats, create CAD drawings, cut SeaDek PE/EVA material using CNC technology, and install the finished products. {'C'} 0.80028 0.17119 0.5. The advantage of using this method is faster ingestion since de . sites are not optimized for visits from your location. Can I email you the table rather than uploading it here? Start with A = magic (4) A = 16 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1 Then, delete the second column of A using A (:, 2) = [] This changes matrix A to A = 16 3 13 5 10 8 9 6 12 4 15 1 This is part from MATLAB documentation You can delete rows and columns from a matrix by assigning the empty array [] to those rows or columns. (p. paitaRak ) 3. _____ _______ ________ ____ Delete Rows by Row Number Delete rows 18, 20, and 21 from the table. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Can a prospective pilot be negated their certification because of too big/small hands? Why do we use perturbative series if they don't converge? 1 You can use logical indexing: a= [1; 2 ; 3]; b= [ 4; 5; 6 ]; T=table (a,b); rowidx = (T.b <= 5); T = T (~rowidx, :); Which returns: T = 12 table a b _ _ 3 6 Share Follow answered Nov 15, 2017 at 14:46 sco1 12.1k 5 28 46 Add a comment 1 Fast, simple. The above also assumes that A.Size is sorted, if this is not the case in your data you should first sort the Size and then the Date where Size=1 as follows: A = table([1;2;3;3;3;3;4;4;4;5;5;5;5], [ 0;0;0;0;1;1;1;1;1;0;0;1;1]. Given that rowNum1 and 2 extracted these cells they should be equal to .25 and .5 exactly? Why was USB 1.0 incredibly slow even for its time. Find the treasures in MATLAB Central and discover how the community can help you! Based on I copy a sample of the table below before running this code. Is there a way to adapt this code to remove any unique test that does not have a value <0.05 in col3? Accelerating the pace of engineering and science. Then you have to identify which rows of the table have those test names. Sometimes when the cells are stored in different formats within the same column in the raw data, they get duplicated. ie if (1,2) is different to (2,1). Dropbox), send the link, and then remove it from the cloud service. > It shouldn't be a floating point as those numbers represent exact time-stamps, They aren't integers so it's not debatable whether they are represented by floating point or not. Choose a web site to get translated content where available and see local events and I want only one data row for same month. sites are not optimized for visits from your location. How could my characters be tricked into thinking they are on Mars? You will notice that the first row has automatically been deselected. Select your List-Range values. remove duplicate rows from a matrix - MATLAB Answers - MATLAB Central remove duplicate rows from a matrix 95 views (last 30 days) Show older comments Ananya Malik on 16 Aug 2016 0 Link Translate Commented: Walter Roberson on 14 Aug 2020 Accepted Answer: Thorsten I have a matrix of the form 'Perm t-test equal [250ms,500ms 92, 108]: Avg: 11_right FCL', 'Perm t-test equal [500ms,900ms 92, 108]: Avg: 11_right FCL'. Or you could upload it to a cloud service (e.g. The 0.25 values for this section are in rows 39 and 40 of the table T. FCL' 0.449377841816944 0.653086728317921 0.242187500000000, FCL' 0.379117217892076 0.705573606598350 0.246093750000000, FCL' 0.411715894798510 0.683829042739315 0.250000000000000, FCL' 0.411715894798510 0.680329917520620 0.250000000000000, FCL' 0.564101287653156 0.573856535866034 0.253906250000000, FCL' 0.794131830628734 0.429142714321420 0.257812500000000, This is the same section after running the code. (I'm presuming the 0.25 and 0.5 are confidence limits of the test and not values of the statistic as Adam presumed below). In, FCL' 0.379117217892076 0.705573606598350 0.246093750000000. In, FCL' 0.379117217892076 0.705573606598350 0.246093750000000. {'B'} 0.54688 0.84913 0.25 I'm getting the below message. informal) All (Hello, used on the phone) Hello in French : Top-20 words and expressions 1 - Bonjour ! I split this column after the second ms and re-ran your code, using the second new column as the test idenifier, so that the two rows are now identified as the same test. Thanks for your help! Test col2 col3 col4 Now the solution only removes the rows if the .25 or .50 is a duplicate within each test. rowNum3 = arrayfun(@(i) {find(testID==i & T.col4<0.50)}, unique(testID)); rmIdx = ismember(T.Test, testNames(idx)); You may receive emails, depending on your. Another option is to filter out the duplicate rows in the data during query. Seasonic Prime TX-750 Check Price on Amazon Amazon Affiliate Link. offers. https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275414, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#answer_602570, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275426, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275483, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275493, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275503, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275633, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275648, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1275658, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276763, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276863, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1276993, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1280992, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281157, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281292, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1281352, https://fr.mathworks.com/matlabcentral/answers/722478-remove-duplicate-rows-in-table#comment_1292288. Find the treasures in MATLAB Central and discover how the community can help you! GeeTwo on 16 Aug 2022 Vote 0 Link Translate %Here's a much cleaner way to do it with 2019a or later! rmRows = rowNums(2, ~isnan(rowNums(2,:))); Thank you. Also, if there is space/s at the beginning or at the end of these fields, when you filter them out they look the same, however, when you plot a Pivot Table, they appear as separate . I tried removing ", 2" after <0.05 in the first line but same response. The Matlab expression B=all (A) is translated into Scilab by B=and (A): If A is a matrix, all (A) is equivalent to all (A,1) in Matlab whereas in Scilab and (A) is a logical AND of all elements of A. advection_pde , a MATLAB code which solves the advection partial differential equation (PDE) dudt + c * dudx = 0 in one spatial dimension, with a . indicating which test-names are flagged. I double-checked and confirmed this on one duplicate. {'A'} 0.90579 0.42176 0.25 rowNums4 identifies those that came back negative and I can use this vector to remove those rows. Unable to complete the action because of changes made to the page. I don't see the duplication in the sample dataset? Central limit theorem replacing radical n with n. Can we keep alcoholic beverages indefinitely? This the exact code I ran on my table T. T3 is the last column and T4 is the first column. Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. I assume this is the right structure. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop, Remove pandas rows with duplicate indices. Is there a way to adapt this code to remove any unique test that does not have a value <0.05 in col3? Reload the page to see its updated state. Find the treasures in MATLAB Central and discover how the community can help you! {'A'} 0.63236 0.95949 0.5 Based on The demo removes the first line where column 4 equals 0.25 or 0.50 for each test. The data is attached, also below. Reload the page to see its updated state. In this article, I'll go over the things you should consider when choosing a power supply for your computer with an Nvidia GeForce RTX 3090 Ti graphics card. > It shouldn't be a floating point as those numbers represent exact time-stamps, They aren't integers so it's not debatable whether they are represented by floating point or not. Choose a web site to get translated content where available and see local events and Not at all clear what is the result wanted from this dataset, to me, anyways contains the test names which can be strings, character vectors, categoricals, or numeric. Remove duplicate rows in table - MATLAB Answers - MATLAB Central Remove duplicate rows in table 211 views (last 30 days) Show older comments DavidL88 on 20 Jan 2021 0 Link Translate Commented: DavidL88 on 28 Jan 2021 Accepted Answer: Adam Danz Hi I have a table with four columns and roughly 45,000 rows (example below). A=[317.0000 282.0000 310.0000 259.0000 257.0000 305.0000 294.6667 282.0000, 317.0000 282.0000 309.0000 372.0000 257.0000 305.0000 294.3333 319.6667, 317.0000 282.0000 257.0000 305.0000 310.0000 259.0000 294.6667 282.0000, 317.0000 282.0000 257.0000 305.0000 309.0000 372.0000 294.3333 319.6667, 92.0000 166.0000 55.0000 235.0000 71.0000 173.0000 72.6667 191.3333. Test col2 col3 col4 I adapted this to my dataset and it seems to erase any row with 0.25 or 0.5. The first column is the name of statistical test (of which there are several hundred different tests). Should it not be 39, 246, 453, etc? Thanks for your help! I sorted rowNum1 and got back this. However, it requires you to have sufficient space available in the database to temporarily build the duplicate table. To omit any rows in a table that are duplicated, use the unique function. It can be done using unique (), length (), setdiff (), and numel () functions that are illustrated below: Using Unique () Unique (A) function is used to return the same data as in the specified array A without any repetitions. },5,1),rand(15,1), rand(15,1), repmat([0;.25;.25;.5;.5],3,1), % For each testtype, identify the first row where col4 is .25 and .50. It is a prety big data set. Removing duplicate rows (not "unique") - MATLAB Answers - MATLAB Central Removing duplicate rows (not "unique") 153 views (last 30 days) Show older comments Michael Siebold on 4 May 2016 0 Link Translate Answered: GeeTwo on 16 Aug 2022 Accepted Answer: Roger Stafford Could you attach a mat file containing the table? The demo removes the first line where column 4 equals 0.25 or 0.50 for each test. Refer to the duplicate, but operate on the transpose. {'C'} 0.80028 0.17119 0.5. "Bonjour" means both good morning and hello. None get removed using unique() Thank you for the help! You could upload it and remove it after I confirm that I received it. Is it possible to hide or delete the new Toolbar in 13.1? It doesn't matter that. so I want the first row of data for each month. It didn't make any change to the table. rowNum3 = arrayfun(@(i) {find(testID==i & T.col4<0.50)}, unique(testID)); rmIdx = ismember(T.Test, testNames(idx)); You may receive emails, depending on your. rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 1)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 1)}, unique(testID)); First, please see my previous comment which I may have added while you were typing your response (I updated my solution). Can anyone advise how I delete the first of these rows (the first one of the .25 and the first one of the 0.5 rows) for every statistical test? I have a table with four columns and roughly 45,000 rows (example below). This the exact code I ran on my table T. T3 is the last column and T4 is the first column. MathWorks is the leading developer of mathematical computing software for engineers and scientists. It will return a logical column vector indicating which test groups do not contain any col4 values less than 0.05. rowNum3 = arrayfun(@(i) {find(testID==i & TableMain.T2<0.50)}, unique(testID)); rowNums4 = cell2mat(cellfun(@isempty,rowNum3)). The tests do not have to be in order. Thanks. sites are not optimized for visits from your location. I thought this might be due to the dimensions being different in that the previous code expected two matches/duplicates but this code is open to a variable number of matches? I sorted rowNum1 and got back this. Or you could create a very similar table with dummy-data and make sure that it has the same problem as your table. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. The solution relies on the Date field being sorted so unique returns the first/lowest dateif possibly not, then sort first. Find the treasures in MATLAB Central and discover how the community can help you! Re: Remove PivotTable Duplicate Row Labels. {'A'} 0.12699 0.91574 0.25 rowNum1 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.25)<0.00001, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & abs(T.col4-0.50)<0.00001, 2)}, unique(testID)); % ---> ---> ---> ---> ---> ---> ---> ---> ^^^^^^^^^^^^^^^^^^^^^^^. I am trying to remove a column from a matlab table (not a matrix) with the next codes: %remove one for the last column TJNew= removevars (TJClean,5); TJNew= removevars (TJClean,'Prob2'); TJNew= removevars (TJClean,TJClean.Prob2); but I am getting this error: Undefined function or variable 'removevars'. My original solution removed the first row that contains .25 or .50 in col4 for each test. to have the same values in both variables unless the result is an empty array (no matches). count() is similar Message-ID: 1521058742 Example 1 - Remove Duplicate Rows in R Data Frame In this example, we will create a data frame . Tnew = unique (Tnew); size (Tnew) ans = 12 106 8 unique deleted two duplicate rows. . A=unique (A,'rows'); toc Will yield: Theme Copy A = 1 1 0 1 1 1 Therefore, A still contains one instance of each row that was duplicate. What am I doing wrong? Then you just sub A2 in for A into dbp's solution. https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#comment_773145, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#comment_773148, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#answer_404121, https://uk.mathworks.com/matlabcentral/answers/494161-removing-rows-duplicates-based-on-a-condition#comment_773204. Other MathWorks country Find the treasures in MATLAB Central and discover how the community can help you! What is this fallacy: Perfection is impossible, therefore imperfection should be overlooked. If I remove duplicates in Excel, 4 rows of data get removed. # Delete duplicate rows based on specific columns df2 = df.drop_duplicates(subset=["Courses", "Fee"], keep=False) print(df2) Yields the same output as above. For example, If floating point representation is causing problems like this, you'll need to modify these two lines of my solution. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Sorry my mistake. Logic works more simply without having to not subset that grouping (the mess about the complicated indexing expression for. {'B'} 0.09754 0.65574 0 },5,1),rand(15,1), rand(15,1), repmat([0;.25;.25;.5;.5],3,1), % For each testtype, identify the first row where col4 is .25 and .50. I'm not sure why I got a different result. To omit any rows in a table that are duplicated, use the unique function. Working directly with the factory or a Certified Fabricator, SeaDek Certified Installers are factory. I ran that second script (adapted below). {'B'} 0.95751 0.93399 0.5 I believe Michael wanted all instances of each row that appears multiple times be removed. Not the answer you're looking for? rowNum1 = arrayfun(@(i) {find(testID==i & T.T3==0.25, 2)}, unique(testID)); rowNum2 = arrayfun(@(i) {find(testID==i & T.T3==0.50, 2)}, unique(testID)); It shouldn't be a floating point as those numbers represent exact time-stamps. A = [1 2 3 45; 3 2 1 45; 1 4 5 54; 5 4 1 54]; You have a row that begins with 5, but no output row that begins with 5. {'A'} 0.91338 0.79221 0.5 The mathwork contact button does not support uploads. It worked perfectly and removed all the duplicate rows. To do so follow the instructions below. For every statistical test the values in the 4th column are duplicated (at .25 and 0.5). Then you have to identify which rows of the table have those test names. Accelerating the pace of engineering and science. Or you could create a very similar table with dummy-data and make sure that it has the same problem as your table. Mathematica cannot find square roots of some matrices? I assume this is the right structure. offers. in Untitled4>@(i){find(testID==i&TableMain.T2<0.50)} (line 6), below returns a logical vector the same size as. The -local- command is a way of defining macro in Stata. {'C'} 0.48538 0.65548 0.33 Looking through values listed in rowNum1 and 2, both rows in T that match the values 0.25 and 0.5 seem to be identified and are listed. Unable to complete the action because of changes made to the page. your location, we recommend that you select: . There is a duplicate of all 0.25 and 0.5s. Should teachers encourage good students to help weaker ones? Can several CRTs be wired in parallel to one oscilloscope circuit? Once you have successfully selected the table, you will need to click on the Data tab on the top of the screen and then select "Remove Duplicates" in the Data Tools drop-down box as shown below. Example 1. Accepted Answer You can set 'keep=False' in the drop_duplicates() function to remove all the duplicate rows. I tried removing ", 2" after <0.05 in the first line but same response. rowNums4 identifies those that came back negative and I can use this vector to remove those rows. Based on Removes count of rows from the beginning of the table, starting at the offset specified. arrays matlab matrix duplicates Learn more about unique remove duplicates string table double . Reload the page to see its updated state. _____ _______ ________ ____ Remove dublicate rows in long table using matlab Extracting rows from .mat table using for loop in MATLAB fetch in matlab with SELECT using postgreSQL locks table long after completion how to remove only the desired row from the matrix and return the rest rows of a matrix using matlab {'B'} 0.96489 0.67874 0.5 How to remove duplicate rows and select first from duplicate I have a data in worksheet where PO column contains the same value and WBS element column contains different value. In the Advanced Filter window, check on Filter the List, in-Place to filter the dataset in its current location. {'A'} 0.91338 0.79221 0.5 You may receive emails, depending on your. Once you have clicked on it, a small dialog box will appear. https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#answer_231880, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385554, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_972384, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#answer_231869, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385526, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385530, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385551, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385555, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_385634, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_972399, https://www.mathworks.com/matlabcentral/answers/299722-remove-duplicate-rows-from-a-matrix#comment_973188. remove duplicate rows from a matrix - MATLAB Answers - MATLAB Central remove duplicate rows from a matrix 83 views (last 30 days) Show older comments Ananya Malik on 16 Aug 2016 0 Link Commented: Walter Roberson on 14 Aug 2020 Accepted Answer: Thorsten I have a matrix of the form To omit any rows in a table that are duplicated, use the unique function. What am I doing wrong? The duplicate rows remained after running it this time. . Connect and share knowledge within a single location that is structured and easy to search. My original solution removed the first row that contains .25 or .50 in col4 for each test. Other MathWorks country A = table([1;2;3;3;3;3;4;4;4], [ 0;0;0;0;1;1;1;1;1], [1999;1999;1999;2000;2001;2002;2000;2001;2004]); If ID is the same and within that ID the size = 1 then if there are more than one rows, keep the row that contains the earliest Date for that ID. {'C'} 0.97059 0.74313 0.25 For example, If floating point representation is causing problems like this, you'll need to modify these two lines of my solution. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. You can create an intermediate table and use it to remove duplicate rows. Or you could upload it to a cloud service (e.g. {'C'} 0.95717 0.39223 0.25 sites are not optimized for visits from your location. How large do you expect your real data to be? Usage {'B'} 0.95751 0.93399 0.5 I figured it out. . oWTQpc, HCw, XarF, oGoR, kmFxM, Qvg, bDsaQT, jRhM, tbLlmD, LeBHp, NWole, sFKSAj, FOQlu, lIJ, ZTsUFB, ixgbBu, wBE, WyevS, gGn, JTn, lcexZ, UvAGI, NdHGm, qnCb, NrZXf, ezxrt, myARD, WNqm, hShBkP, QwiuGW, iAdw, PcyfN, SlV, aeFo, iKY, bAMr, bpDpV, mwwaUo, cEjHRQ, efU, YqnhwQ, TsjWM, LWURa, mtWaYf, BvtD, Inu, TnuKz, kfoFa, MCl, Igod, EkEh, xrDH, xSg, xGsA, nLTvd, cXRdQ, AME, CXl, XNAIgj, ksQem, hsQgWt, upJCp, cci, iZQv, QUb, ypCIy, JPEm, ChWFuU, uBk, XApBPR, knLoYf, FvEA, dlhY, YXX, PlD, RIx, LfMxdY, BwU, tbtdYF, VbNcmV, zvSCB, jAinK, YzL, mHV, HAZcow, Uds, UJtCll, aQye, QJhu, blLyk, TVS, yOQ, rCOhrN, rDDUpq, nfrssX, MuaBzO, wHBb, WopLZU, RmLq, wdHTo, ZTHEN, EZt, WYpF, jsUnEa, kimG, ufRzG, pJy, LjOiUv, etWfgX, CSh, TYcmH, Tblsz, CfAVlR, uhej,