Drawnow on Matlab: It store the figure or store the variable? I want to get values of A, B, C. in form of e.g A=(430,0.56). Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? Can a prospective pilot be negated their certification because of too big/small hands? sites are not optimized for visits from your location. Theme Copy delete 2.fig; savefig ('2.fig'); open ('2.fig'); h = gcf; %current figure handle axesObjs = get (h, 'Children'); %axes handles dataObjs = get (axesObjs, 'Children'); %handles t xdata = get (dataObjs, 'XData'); So far you just know the max value. 1 Link If you want to get the values of unknown points from the figure and have to use in code then this could be helpful. Enter the formula in terms of x inside the for loop and. I guess the most simple way is to zoom in and see the value, but there are about 1 thousand data to work with. clc; clear all; Fs = 150; % Sampling frequency. your location, we recommend that you select: . Since you are setting your marker color, you probably noticed that (each series is assigned a different color Search Answers Clear Filters. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. I have found the minimun value among them (-0.0168), and now, I would like to getting back from that value (the minimum), and to call back the corresponding WZ and J values associated Theme Copy J = [2.5 27 56]; 4 Answers Sorted by: 2 Another option is to use data brush. Connecting three parallel LED strips to the same power supply. Are they actually plotted as a separate series? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Find the treasures in MATLAB Central and discover how the community can help you! After the plot code i have an input prompt that asks user to select closest x axis value for one of the chosen 3 attempts. I have the axis limits and style set to 'equal', so when the limits are changed, the size of the plotting area is automatically changed to maintain the correct aspect ratio. But i cannot seem to do that when the dialog box prompt comes up. I just wrote them in Photoshop help clarify the question. I don't have the x values, and .05 isn't an actual data point in the y vector. Something can be done or not a fit? If the resolution of your data is high, it is likely that it will be a good approximation. please why we wrote this,,,,,,,,,,,,,,,,, LineH = get(gca, 'Children'); x = get(LineH, 'XData'); y = get(LineH, 'YData'); , for example by calling the clear('x') command. How can I plot a pattern of random points in a specific region? (TA) Is it appropriate to ignore emails from a student asking obvious questions? In this method, we need to specify the automatic method that is tight and padded. The rubber protection cover does not pass through the hole in the rim. MATLAB plots every column as a seperate curve. There are certain steps that you need to follow for Matlab function plot, and these are: Define the variable x, by highlighting the range of the values for x variable, for which the functions can be plotted. I want to find x value given y value, y value is [0.2 0.4 0.7 0.9 1.0] %Finding X value with known Y value on plot clc; clear all; close all; x= 0:0.01:5; y= [0.2 0.4 0.7 0.9 1.0] [X, Y] = me. Theme. This variable will contain X and Y coordinates of all selected points. MATLAB stores rational numbers as doubles by default, which is a measure of the number of decimal places that are stored in each variable and thus of how accurate the values are. But you did not explained the code. When would I give a checkpoint to my D&D party that they can return to if they die? i have 30,000 rand value that i want to separate 400 to 400.then i wanna plot them but the x axis should start at 0 not 400 or 800 or.any help please? Start Hunting . Why is this usage of "I've to work" so awkward? thank u very muchi am so happy to know such helpful men like u , Jan Simon and Ilham Hardy. Let us plot the simple function y = x for the . The first line intersects the set of points that follow x1 with the set of points that precede x2, and the return the indices. Other MathWorks country how i can write these at the command window ? To comment a single or two lines of code, we can use the % character . If you did that unwise thing, then it's possible to extract your data from the graph, which has, in effect "stored" it. MATLAB Answers. Please help me Guillaume on 29 Aug 2016 @Pooja Patel Theme Copy value = find (Y == Y) like what is "xi"? offers. % Get the first index where 'y' is greater than some threshold thresh = 10; idx = find ( y >= thresh, 1 ); % Find 1st index where y >= thresh % Get the x value at this index xDesired = x ( idx ); Note that xDesired will be empty if there was no y value over the threshold. This is how our input and output will look like in MATLAB command window: Input: x = linspace (0, 3*pi, 50); y = sin (x); plot (x,y) hold on y1 = cos (x); plot (x, y1) hold off title ('Trigonometric waves', 'Sine & Cos wave') Output: As we can see in the Output, we have obtained a plot of a sine and cos wave with the required title and a sub-title. If you don't have the abscissae and you are creating the plot by only providing y as input to the plot function, i.e., plot (y), then the y values are plotted against the vector 1:length (y). Otherwise, you could look at the interpolation commands, if you want the whole process automated and repeatedly executed. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Where does the idea of selling dragon parts come from? The number of values can be 3, 5, 10, 50 or any N integer. Not the answer you're looking for? How to say "patience" in latin in the modern sense of "virtue of waiting or being able to wait"? clc; clear all; Fs = 150; % Sampling frequency. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. i need the x and y values of this data. This requires user to zoom in on generated plot. Matlab has the ginput for getting the (x,y) value of where you have clicked on the graph. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. A,B,C are not the part of Plot. Ready to optimize your JavaScript with Rust? Copy. Zooming a portion of figure in a figure-Matlab. You already have x, and y since you plotted it, so there's no need to extract. I plot x-y graph (Gaussian function) and want to get the x-axis value (will be two points in this case) at a certain y-axis value (half of the maximum) I tried this but it didn't work: Theme. I have a code that generates an EMG plot of three breathing attempts. To learn more, see our tips on writing great answers. With the first you could write. Use an empty matrix [] to specify, by METHOD to perform extrapolation for elements of Xq outside, Vq = interp1(X,V,Xq,METHOD,EXTRAPVAL) replaces, extrapolation behavior with four input arguments, 'extrap' for 'spline' and 'pchip' and EXTRAPVAL = NaN (NaN +NaNi for, use the interpolation algorithm specified, METHOD to generate the ppform (piecewise polynomial form) of V. The, may be any of the above METHOD except for 'v5cubic'. . How to changes X Y coordinate System and get value point? Therefore, I want to give a commend that orders to give the y-value at certain x-value. Toggle Sub Navigation. Counterexamples to differentiation under integral sign, revisited, Penrose diagram of hypothetical astrophysical white hole. Isn't that exactly what I just showed you how to do? Did the apostolic or early church fathers acknowledge Papal infallibility? (interpolation etc..) How can I do that? It is possible, however, to define explicit limits by using the following methods: By using xlim () and ylim () By using set_xlim () and set_ylim () By using axis () I have added some comments. Note that MATLAB represents irrational numbers such as pi with rational approximations, except when using the symbolic math toolbox. After that, we need to enable the auto limit selection. matlab ,MATLAB GUI_cherry- matlab ; t = -0.5:1/Fs:0.5; % Time vector of 1 second. Plot Multiple Data Series at Specified x values Copy. How do I find this if the size of matrix is very big.. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. thank u alot ,,, i found ur answer very useful,,,,,,, i only wanted to explain my question. Find the treasures in MATLAB Central and discover how the community can help you! how to create different matrices? MathWorks is the leading developer of mathematical computing software for engineers and scientists. For example, you might want to look at interp1: Theme Copy x = 1:5; y = randn (1,5); plot (x,y,'-o') xhigh = linspace (1,5,100); yhigh = interp1 (x,y,xhigh,'spline'); hold on I plot an x , y graph can i ask the programme to tell me the value of y for the value of x i want ? If you choose to interpolate tou can construct a new set of points, and interpolate over that set. will give you an under-approximation (in general; unless the data set is artificial) of the duration you are seeking. PPVAL(PP,Xq) is the same as, You may receive emails, depending on your. or in opposite, if C is one point of xy coordinate, how to get position of C in x'y' coordinate? Do you want the y values exactly at the position of an x value, or are you interested in x values between two given x values also? Great explanation. error in plotting a figure in matlab program, Using suptitle overrides ('visible', 'off') figure property in matlab, Matlab: Loop over files, plot data in one figure & add file names as legend, Legend each curve in a single figure from a matlab plot. Sign in to comment. PP may then, evaluated via PPVAL. ? To plot multiple sets of coordinates on the same set of axes, specify at least one of X or Y as a matrix. I just wrote them in Photoshop help clarify the question. Other MathWorks country x = 1:100; % Initialise plot handle h = plot (nan,nan); for iter = 1:1e2 y = rand + rand*x + rand* (x.^2 ); % set appropriate values of handle set (h, {'XData','YData'}, {x, y}); drawnow; end This way, a plot handle is created only once, and its properties are set in the loop. Sign in to answer this question. Zooming in on generated graph in order to get. Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? MaxVelocity = max (Y) This will imply the peak value of your velocity profile. Issue Plotting 2 different Values. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Skip to content. I want to be able to have the cursor move on the actual plot, and by clicking it, I get the (x,y) coordinate of my plot (in this case, the time and the value of sine). It is working, I've already do that but I need the flow depth numerically (y) at the end of my channel (x=xmax). As an example on figure i want to find the time of the 68.5 m/s ?? MATLAB: get min x value of struct of vectors matrix get min values of a matrix before max values occurred OpenCV can not get the right max and min values of Mat matlab how to get min value and its index in a matrix python matplotlib specgram () max plot value appears incorrect Replace -inf by min and +inf by max value in matlab array Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? I want to find x value given y value, y value is [0.2 0.4 0.7 0.9 1.0] %Finding X value with known Y value on plot clc; clear all; close all; x= 0:0.01:5; y= [0.2 0.4 0.7 0.9 1.0] [X, Y] = me. How to get the 3rd column in an array by using 1st and 2nd column values as index in Matlab; Get list of property names and values for a MATLAB plot; Confusion in figuring out the relation between actual frequency values and FFT plot indexes in MATLAB; Retrieving X and Y values from Matlab Plot; How do I make the colorbar of my image plot in . plot (X,Y) creates a 2-D line plot of the data in Y versus the corresponding values in X. >> x=1:1:100; >> y=5*x+10; >> yDesired = interp1(x,y, 10), =====================================================================================, >> y=5*x.^2+2*x+10; >> plot(y,x) >> xDesired = interp1(y,x, 60), -----------------HELPFILES---------------, default is linear interpolation. Based on That's all true, but we should probably stop to tell Karim that MATLAB does have a lot of tools for evaluating points on some of those many interesting functions. Add a new light switch in line with another switch? Save plot to image file instead of displaying it using Matplotlib, Adding a legend to PyPlot in Matplotlib in the simplest manner possible, Making a line plot of a set of values in MATLAB. Introduction to Matlab Plot Multiple Lines. did anything serious ever run on the speccy? The output of our example will be as shown below: Click brush icon on the figure toolbar and make a selection. Making statements based on opinion; back them up with references or personal experience. x-axis data is 1-9 because you did not provide any data for MATLAB to plot with. The problem I'm having is I don't know how to get the x values. so if i want, You may receive emails, depending on your. If you have a chart and you just want to find out the values of arbitrary points on the chart you can use the ginput function or by far the simplest solution is to just use the interactive data cursor built into the figure window. Following is described of my question. In fact I showed you how to do it two different ways. Learn more about matrices, plot MATLAB. To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. Define the function, y = f (x) Call the plot command, as plot (x, y) Following example would demonstrate the concept. I just Wrote them in Photoshop to make Understand the Question. Why do American universities have so many gen-eds? Note: On every execution of the code input values can be different. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. I'm using the ode45 (x,y) for solve an open channel flow problem (plot the surface profiles). Unable to complete the action because of changes made to the page. your location, we recommend that you select: . figure X = linspace(0,2*pi,50)'; Y = cos(X); stem(X,Y) fig2plotly(gcf); The first vector input determines the position of each stem on the x-axis. your location, we recommend that you select: . So basically what this means is that since this is a bell shaped curve, there are 2 instances where y = .05. How do I find this if the size of matrix is very big.. Lets normalise our X values so the data ranges between -1 and 0. In the first case consider, that numerical comparisons are bounded by the numerically limited precision: % Linear interpolation [EDITED, not "linspace"]. Call the command for function plot with the file name plot (x,y). Check out the. % This code solves for x given a value of y. The question is not clear. I would really appreciate any help anybody could offer, I've been stuck trying to do this for the past 6 hours. Extract X,Y data from scatter plot. Find the treasures in MATLAB Central and discover how the community can help you! The script finds the values range from 1st of . . i have 30,000 rand value that i want to separate 400 to 400.then i wanna plot them but the x axis should start at 0 not 400 or 800 or.any help please? offers. Please help me, value = find(Y == Y); xaty = x(value) or u can take find(Y == 1) this will also work if size is big, and how does this work if i want to retrieve mulitple values at once? Choose a web site to get translated content where available and see local events and Connect and share knowledge within a single location that is structured and easy to search. Unable to complete the action because of changes made to the page. Other MathWorks country Navigazione principale in modalit Toggle . Unable to complete the action because of changes made to the page. if you plot, in section tools,basic fitting you can evaluate, I agree with Jan - it's ambiguous. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Haupt-Navigation ein-/ausblenden . How many transistors at minimum do you need to build a general-purpose computer? Then select in menu Tools-Brushing-Create new variable. . Choose a web site to get translated content where available and see local events and Just set the value for x_low, % x_high, and y. I have a matrix , X=[5 6 9 8 4] Y=[8 7 2 1 9] If I plot this and I need to get position of the X value corresponds to Y=1, that means in which row the X value 8 is located? Automatic xlim () selection: In this method, we specify the limit for the current axis or chart by using an automatic way. Thanks for contributing an answer to Stack Overflow! such a simple issue, but I am a Matlab novice. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. answer should be 4th position. You can leave default variable name ans. Thanks for contributing an answer to Stack Overflow! MathWorks is the leading developer of mathematical computing software for engineers and scientists. So, How to convert C position to xy coordinate?? Why is it so much harder to run on a treadmill when not holding the handlebars? C is one point of x'ay' coordinate. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is there any way I can do this, or is this impossible? . I'm sorry, I tought that the code was self explanatory. Not the answer you're looking for? Matplotlib generates the minimum and maximum values of variables to be presented along the x, y (and z-axis in the case of a 3D plot) axes of a plot automatically. I need to plot the water level for each specific year on y axis and ice conentration average on x axis. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. offers. A,B,C are not the part of Plot. The peak goes from 0 to .25, and what I need is the duration of this peak with a threshold of .05. and what if i want to take range of values form Point A to B ? Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? xvalue = interp1 (y_bluesignal,x_bluesignal, 50.05) and idx = find (y_bluesignal == 50.05); Xidx = x_bluesignal (idx); may work if there is an entered data point at y=50.05 (use a tolerance as in the above comments if this is a calculated value), the interp method will work regardless Share Improve this answer Follow edited Aug 29, 2018 at 16:01 We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. % set it equal to y_i. Now, I create new XY coordinate with a is original point. The plot is created over the default interval [-5, 5]. add $6800 and $1142.4 = $ 7924.4. Choose a web site to get translated content where available and see local events and x_low=-100; %the lowest value of x that the for loop could possibly output. Sudo update-grub does not work (single boot Ubuntu 22.04). rev2022.12.9.43105. How to plot two histograms together in R? Reload the page to see its updated state. Weiter zum Inhalt. Accelerating the pace of engineering and science. i have 30,000 rand value that i want to separate 400 to 400.then i wanna plot them but the x axis should start at 0 not 400 or . Find centralized, trusted content and collaborate around the technologies you use most. To get the number of values above threshold = 0.05 you can type. However, say that I have plotted a graph with plot (t, sin (2*pi*t)). Asking for help, clarification, or responding to other answers. Objectives: Learn how to obtain the coefficients of a "straight-line" fit to data, display the resulting equation as a line on the data plot, and display the . answer should be 4th position. Define the function, y = f (x). Accelerating the pace of engineering and science. How I can get specific values from Matlab Figure. How can I extract data in a vector from semilogx figure? Accepted Answer Star Strider on 8 Nov 2014 or flow_depth = y (end,:); Please explain this by editing the original questions. Let's understand this function with the help of an example: fplot (@ (x) x^2) Here we have taken square function as the one which we need to plot. So in that case, I'd just use the x and y which are already available, and if the x is in the x array that you plotted, you can do this: in your x array, then you can use interp1() to get the interpolated/estimated y value for that x. i am so sorry for complexity the problem is that i plotted a figure of x , y then i want the program automatically uses the y value (any value) when its x value used (it is used in a loop) thanks alot for ur care. That means your semilogx plot is made up of 519 data series with 756 data pairs in each one. sites are not optimized for visits from your location. 1. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? How can I get the x and y coordinates of this matrix to create a 3D surface? More Answers (3) Getting an x values from a plot in MATLAB. How could my characters be tricked into thinking they are on Mars? Add a new light switch in line with another switch? We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Man, I just spent so long trying to figure this out. Respected Image Analyst gave the best answer; I am just simplifying it with examples. Find centralized, trusted content and collaborate around the technologies you use most. If you don't have the abscissae and you are creating the plot by only providing y as input to the plot function, i.e., plot(y), then the y values are plotted against the vector 1:length(y). To learn more, see our tips on writing great answers. In order to find the maximum value, you need to employ some MATLAB functions (max and find). The script works for specific years but not for some because of not same vector size. Connect and share knowledge within a single location that is structured and easy to search. I first plot data using the scatter function, and then set the x-axis and y-axis limits. what if you want to extract data of two lines ? Reload the page to see its updated state. The number of values can be 3, 5, 10, 50 or any N integer. How can I get it? Did neanderthals need vitamin C from the diet? To plot the graph of a function, you need to take the following steps . Try this code, Its working for me Code is according to Time and Y figure. x_high=100; %the highest value of x that the for loop could possibly output. Effect of coal and natural gas burning on particulate matter pollution, 1980s short story - disease of self absorption. Then just run mean (ans (:,2)) to get average of Ys. Find the treasures in MATLAB Central and discover how the community can help you . Doing this will give you equal spacing. Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? If you want to get the values of unknown points from the figure and have to use in code then this could be helpful. Learn more about collect, symbolic, subs MATLAB, Symbolic Math ToolboxStep-by-step explanation. Are the S&P 500 and Dow Jones Industrial Average securities? Copy. Reload the page to see its updated state. Is this possible? A,B,C or not the part of Plot. How is the merkle root verified if the mempools may be different? So I have a set of y data in MATLAB, and the plot comes out as a bell shaped curve. Vai al contenuto. Define x, by specifying the range of values for the variable x, for which the function is to be plotted. Ready to optimize your JavaScript with Rust? See that section for details. Why do American universities have so many gen-eds? I plot x-y graph (Gaussian function) and want to get the x-axis value (will be two points in this case) at a certain y-axis value (half of the maximum) I tried this but it didn't work: Theme. If you only care about this specific vector y, you could manually adjust the calculation since the plot command already did linear interpolation by default when invoked. Find the treasures in MATLAB Central and discover how the community can help you! But perhaps you have a Figure file and lost the x and y values. MATLAB will plot each column as its own series. Why did the Council of Elrond debate hiding or sending the Ring away, if Sauron wins eventually in that scenario? index = find (x == desiredXValue); % May be multiple indexes, possibly yDesired = y (index); Now, if the desired x is not in your x array, then you can use interp1 () to get the interpolated/estimated y value for that x. https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#comment_387639, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#comment_387642, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#answer_91764, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#comment_801434. I have two excel files, the script extracts the data from the 2 files. Share Plot Single Data Series at Specified x values Plot 50 data values of cosine evaluated between 0 and 2 and specify the set of x values for the stem plot. Like in sample pictures, I want to get values of A, B, C. in form of e.g A= (430,0.56). I have a matrix , X= [5 6 9 8 4] Y= [8 7 2 1 9] If I plot this and I need to get position of the X value corresponds to Y=1, that means in which row the X value 8 is located? If you plot x versus y, the values are known and therefore the problem has not relation to the plotting. The values in between are the velocities of each point. Cooking roast potatoes with a slow cooked roast. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. I need to know what the x values are at these points and get the difference between the two, thus giving me the duration. Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? If there isn't a data set, it would be nice to get the value of how the plot line is drawn for the points. Passer au contenu. https://in.mathworks.com/matlabcentral/answers/2951-extracting-data-series-from-fig-file#comment_2357085, You may receive emails, depending on your. I plot x-y graph (Gaussian function) and want to get the x-axis value (will be two points in this case) at a certain y-axis value (half of the maximum) I tried this but it didn't work: Theme Copy clc; clear all; Fs = 150; % Sampling frequency t = -0.5:1/Fs:0.5; % Time vector of 1 second x = 1/ (sqrt (2*pi*0.01))* (exp (-t.^2/ (2*0.01))); figure; Basically, there are two ways to implement the xlim () function in Matlab as follows. Furthermore, you probably want the wrong thing. 1. fplot (f) This will plot the graph defined by the function y = f (x). Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, What are those points (A, B, C) etc? Learn more about scattered data, extract value, plot . t = -0.5:1/Fs:0.5; % Time vector of 1 second. How to smoothen the round border of a created buffer to make it look more natural? Step 1: to get the total amount you would pay for 4 years add the principal amount &6800 and the APR 4.2% = 285.6x 4 years = $1142.4 interest for 4 years. kedarps 851 Reference: stackoverflow.com POPULA POST https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_537019, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#answer_305991, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_584148, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_1187993, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_1962535, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_1962595, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_2169550, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_2274400, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#answer_619987, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#answer_1050830. Asking for help, clarification, or responding to other answers. To get the number of values above threshold = 0.05 you can type above_thresh_count = length (y (y>=threshold)); If the implied time step is Ts, then The length of the input values (Graph Values) can also change every time. But if you want to find corresponding time value for max velocity, first you need to find index of it. Sudo update-grub does not work (single boot Ubuntu 22.04). After the plot code i have an input prompt that asks user to select closest x axis value for one of the chosen 3 attemp. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? I have a matrix, where the first row is my x direction and the first column is my y direction. It will just replace 1-9 with your array. Some explanation would improve this answer. from the axes (graph) at all. Hi, how can I extract data andd save as mat file from a figure which has 3 subplots, like this: let say i have y values and need to find the corresponding location, can we find the unspecified location? Based on this matrix I want to create a 3D plot, where one axis is my x-direction, the second axis is my y-direction and the third axis is the velocity changes. rev2022.12.9.43105. So, that means you have 6 curves and 9 data points for each curve. Based on Theme Copy yDesired = interp1 (x,y, desiredXValue); 7 Comments on 1 Feb 2022 Sign in to comment. How to get x coordinates from a matrix - MATLAB Answers - MATLAB Central How to get x coordinates from a matrix Follow 2 views (last 30 days) Show older comments Jin Chua on 1 Feb 2017 0 Commented: Star Strider on 5 Feb 2017 I have a matrix with pixel values and zeros. Learn more about plot, graph, input prompt, prompt MATLAB . Like in sample pictures. Sign in to comment. please find the attachment; in the figure, there are two data values. Are defenders behind an arrow slit attackable? I want to get some specific values from a Matlab Figure. Running the for loop, ends up in having created a slope matrix, with 3 values inside, which reprenset 3 different slopes. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Making statements based on opinion; back them up with references or personal experience. Explain why my code does not do what you want. I want to find x value given y value, y value is [0.2 0.4 0.7 0.9 1.0] %Finding X value with known Y value on plot clc; clear all; close all; x= 0:0.01:5; y= [0.2 0.4 0.7 0.9 1.0] [X, Y] = me. 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