So I have a set of y data in MATLAB, and the plot comes out as a bell shaped curve. I want to get values of A, B, C. in form of e.g A=(430,0.56). How can I plot a pattern of random points in a specific region? i need the x and y values of this data. So, How to convert C position to xy coordinate?? I have a matrix, where the first row is my x direction and the first column is my y direction. Find the treasures in MATLAB Central and discover how the community can help you . Why is it so much harder to run on a treadmill when not holding the handlebars? offers. Find the treasures in MATLAB Central and discover how the community can help you! Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? PP may then, evaluated via PPVAL. Theme Copy yDesired = interp1 (x,y, desiredXValue); 7 Comments on 1 Feb 2022 Sign in to comment. But you did not explained the code. How to smoothen the round border of a created buffer to make it look more natural? Define the function, y = f (x). 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. How can I get the x and y coordinates of this matrix to create a 3D surface? Find centralized, trusted content and collaborate around the technologies you use most. I'm using the ode45 (x,y) for solve an open channel flow problem (plot the surface profiles). How do I find this if the size of matrix is very big.. Add a new light switch in line with another switch? Not the answer you're looking for? But i cannot seem to do that when the dialog box prompt comes up. matlab ,MATLAB GUI_cherry- matlab ; 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? I need to plot the water level for each specific year on y axis and ice conentration average on x axis. plot (X,Y) creates a 2-D line plot of the data in Y versus the corresponding values in X. Why is this usage of "I've to work" so awkward? Enter the formula in terms of x inside the for loop and. In this method, we need to specify the automatic method that is tight and padded. Reload the page to see its updated state. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? Counterexamples to differentiation under integral sign, revisited, Penrose diagram of hypothetical astrophysical white hole. 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). 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. 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'. 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. Find the treasures in MATLAB Central and discover how the community can help you! How I can get specific values from Matlab Figure. MATLAB Answers. Then select in menu Tools-Brushing-Create new variable. Please explain this by editing the original questions. % This code solves for x given a value of y. . Can a prospective pilot be negated their certification because of too big/small hands? I need to know what the x values are at these points and get the difference between the two, thus giving me the duration. Copy. >> 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. I want to get some specific values from a Matlab Figure. Learn more about collect, symbolic, subs MATLAB, Symbolic Math ToolboxStep-by-step explanation. Start Hunting . Are the S&P 500 and Dow Jones Industrial Average securities? Running the for loop, ends up in having created a slope matrix, with 3 values inside, which reprenset 3 different slopes. 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. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. To learn more, see our tips on writing great answers. rev2022.12.9.43105. To comment a single or two lines of code, we can use the % character . Ready to optimize your JavaScript with Rust? I just wrote them in Photoshop help clarify the question. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? 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. If you choose to interpolate tou can construct a new set of points, and interpolate over that set. Sudo update-grub does not work (single boot Ubuntu 22.04). Vai al contenuto. 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? 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). Lets normalise our X values so the data ranges between -1 and 0. add $6800 and $1142.4 = $ 7924.4. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The script works for specific years but not for some because of not same vector size. Some explanation would improve this answer. . 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. That means your semilogx plot is made up of 519 data series with 756 data pairs in each one. Skip to content. % set it equal to y_i. To plot the graph of a function, you need to take the following steps . like what is "xi"? Are they actually plotted as a separate series? This requires user to zoom in on generated plot. How many transistors at minimum do you need to build a general-purpose computer? 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? A,B,C are not the part of Plot. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. kedarps 851 Reference: stackoverflow.com POPULA POST As an example on figure i want to find the time of the 68.5 m/s ?? from the axes (graph) at all. Drawnow on Matlab: It store the figure or store the variable? Great explanation. The script finds the values range from 1st of . 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? such a simple issue, but I am a Matlab novice. Other MathWorks country 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. Toggle Sub Navigation. Like in sample pictures. Zooming in on generated graph in order to get. 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 Learn more about matrices, plot MATLAB. In fact I showed you how to do it two different ways. C is one point of x'ay' coordinate. Check out the. Asking for help, clarification, or responding to other answers. 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; Connecting three parallel LED strips to the same power supply. However, say that I have plotted a graph with plot (t, sin (2*pi*t)). The number of values can be 3, 5, 10, 50 or any N integer. clc; clear all; Fs = 150; % Sampling frequency. https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_503858, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_96318, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169060, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169068, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169131, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_482718, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_1448607, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_1458001, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_1964845, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_96292, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169059, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169132, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169133, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169136, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169268, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_96291, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169057, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_302068. The output of our example will be as shown below: Asking for help, clarification, or responding to other answers. Connect and share knowledge within a single location that is structured and easy to search. t = -0.5:1/Fs:0.5; % Time vector of 1 second. If you want to get the values of unknown points from the figure and have to use in code then this could be helpful. The plot is created over the default interval [-5, 5]. . Define x, by specifying the range of values for the variable x, for which the function is to be plotted. thank u alot ,,, i found ur answer very useful,,,,,,, i only wanted to explain my question. Let us plot the simple function y = x for the . 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. Based on clc; clear all; Fs = 150; % Sampling frequency. How do I find this if the size of matrix is very big.. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. I guess the most simple way is to zoom in and see the value, but there are about 1 thousand data to work with. 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 sites are not optimized for visits from your location. Accepted Answer Star Strider on 8 Nov 2014 or flow_depth = y (end,:); Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? The rubber protection cover does not pass through the hole in the rim. Accelerating the pace of engineering and science. How is the merkle root verified if the mempools may be different? Find centralized, trusted content and collaborate around the technologies you use most. But if you want to find corresponding time value for max velocity, first you need to find index of it. Introduction to Matlab Plot Multiple Lines. rev2022.12.9.43105. Making statements based on opinion; back them up with references or personal experience. A,B,C are not the part of Plot. x_high=100; %the highest value of x that the for loop could possibly output. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Search Answers Clear Filters. 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. Since you are setting your marker color, you probably noticed that (each series is assigned a different color 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. % 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, What are those points (A, B, C) etc? Find the treasures in MATLAB Central and discover how the community can help you! I want to get some specific values from a Matlab Figure. Share To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Try this code, Its working for me Code is according to Time and Y figure. Define the function, y = f (x) Call the plot command, as plot (x, y) Following example would demonstrate the concept. To learn more, see our tips on writing great answers. Reload the page to see its updated state. Zooming a portion of figure in a figure-Matlab. So, that means you have 6 curves and 9 data points for each curve. answer should be 4th position. 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]; Like in sample pictures, I want to get values of A, B, C. in form of e.g A= (430,0.56). Basically, there are two ways to implement the xlim () function in Matlab as follows. Is there any way I can do this, or is this impossible? I just wrote them in Photoshop help clarify the question. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Note: On every execution of the code input values can be different. Following is described of my question. 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? See that section for details. 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. Why do American universities have so many gen-eds? The peak goes from 0 to .25, and what I need is the duration of this peak with a threshold of .05. (interpolation etc..) How can I do that? In the first case consider, that numerical comparisons are bounded by the numerically limited precision: % Linear interpolation [EDITED, not "linspace"]. Sign in to answer this question. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why did the Council of Elrond debate hiding or sending the Ring away, if Sauron wins eventually in that scenario? Based on 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. I have a code that generates an EMG plot of three breathing attempts. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. Unable to complete the action because of changes made to the page. Theme. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? Did neanderthals need vitamin C from the diet? Based on 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 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? 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 Copy. 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. Accelerating the pace of engineering and science. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Thanks for contributing an answer to Stack Overflow! 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. Haupt-Navigation ein-/ausblenden . Connect and share knowledge within a single location that is structured and easy to search. Plot Multiple Data Series at Specified x values 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 MATLAB will plot each column as its own series. But perhaps you have a Figure file and lost the x and y values. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Copy. Is this possible? 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. The problem I'm having is I don't know how to get the x values. How can I get it? Explain why my code does not do what you want. Where does the idea of selling dragon parts come from? 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 . 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. Just set the value for x_low, % x_high, and y. Ready to optimize your JavaScript with Rust? Unable to complete the action because of changes made to the page. Weiter zum Inhalt. 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. Furthermore, you probably want the wrong thing. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. offers. 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. A,B,C or not the part of Plot. The values in between are the velocities of each point. Passer au contenu. Note that MATLAB represents irrational numbers such as pi with rational approximations, except when using the symbolic math toolbox. 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. Thanks for contributing an answer to Stack Overflow! This variable will contain X and Y coordinates of all selected points. Making statements based on opinion; back them up with references or personal experience. your location, we recommend that you select: . Respected Image Analyst gave the best answer; I am just simplifying it with examples. 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. Add a new light switch in line with another switch? Other MathWorks country Effect of coal and natural gas burning on particulate matter pollution, 1980s short story - disease of self absorption. 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'); 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 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? or in opposite, if C is one point of xy coordinate, how to get position of C in x'y' coordinate? will give you an under-approximation (in general; unless the data set is artificial) of the duration you are seeking. With the first you could write. Are defenders behind an arrow slit attackable? Learn more about plot, graph, input prompt, prompt MATLAB . If you did that unwise thing, then it's possible to extract your data from the graph, which has, in effect "stored" it. (TA) Is it appropriate to ignore emails from a student asking obvious questions? Sign in to comment. Choose a web site to get translated content where available and see local events and MATLAB plots every column as a seperate curve. To get the number of values above threshold = 0.05 you can type. Sudo update-grub does not work (single boot Ubuntu 22.04). 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. The number of values can be 3, 5, 10, 50 or any N integer. Unable to complete the action because of changes made to the page. Doing this will give you equal spacing. your location, we recommend that you select: . did anything serious ever run on the speccy? 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I have two excel files, the script extracts the data from the 2 files. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. How to changes X Y coordinate System and get value point? Choose a web site to get translated content where available and see local events and https://in.mathworks.com/matlabcentral/answers/2951-extracting-data-series-from-fig-file#comment_2357085, You may receive emails, depending on your. so if i want, You may receive emails, depending on your. 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. In order to find the maximum value, you need to employ some MATLAB functions (max and find). I have added some comments. Other MathWorks country You can leave default variable name ans. Why do American universities have so many gen-eds? You already have x, and y since you plotted it, so there's no need to extract. Not the answer you're looking for? Then just run mean (ans (:,2)) to get average of Ys. Call the command for function plot with the file name plot (x,y). 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? How to say "patience" in latin in the modern sense of "virtue of waiting or being able to wait"? We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Matlab has the ginput for getting the (x,y) value of where you have clicked on the graph. ? how i can write these at the command window ? 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. Reload the page to see its updated state. 1. First open the figure, then obtain the x and y coordinates of the line with, To obtain the value yi at the point with abscissa greater or equal then xi you can write, To extract the values between the points with abscissa x1 and x2 you can follow both strategies. Now, I create new XY coordinate with a is original point. please find the attachment; in the figure, there are two data values. MaxVelocity = max (Y) This will imply the peak value of your velocity profile. thank u very muchi am so happy to know such helpful men like u , Jan Simon and Ilham Hardy. 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. 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. To plot multiple sets of coordinates on the same set of axes, specify at least one of X or Y as a matrix. After that, we need to enable the auto limit selection. Navigazione principale in modalit Toggle . It is working, I've already do that but I need the flow depth numerically (y) at the end of my channel (x=xmax). I'm sorry, I tought that the code was self explanatory. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. what if you want to extract data of two lines ? Sign in to comment. Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? Therefore, I want to give a commend that orders to give the y-value at certain x-value. . sites are not optimized for visits from your location. I just Wrote them in Photoshop to make Understand the Question. How to plot two histograms together in R? The length of the input values (Graph Values) can also change every time. Click brush icon on the figure toolbar and make a selection. When would I give a checkpoint to my D&D party that they can return to if they die? 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 . and what if i want to take range of values form Point A to B ? Otherwise, you could look at the interpolation commands, if you want the whole process automated and repeatedly executed. your location, we recommend that you select: . Please help me Guillaume on 29 Aug 2016 @Pooja Patel Theme Copy value = find (Y == Y) Choose a web site to get translated content where available and see local events and Cooking roast potatoes with a slow cooked roast. 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. How could my characters be tricked into thinking they are on Mars? 1. fplot (f) This will plot the graph defined by the function y = f (x). answer should be 4th position. 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 ? 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 () More Answers (3) It will just replace 1-9 with your array. The question is not clear. 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 . offers. Learn more about scattered data, extract value, plot . sites are not optimized for visits from your location. I would really appreciate any help anybody could offer, I've been stuck trying to do this for the past 6 hours. Isn't that exactly what I just showed you how to do? 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. Getting an x values from a plot in MATLAB. 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. x_low=-100; %the lowest value of x that the for loop could possibly output. So basically what this means is that since this is a bell shaped curve, there are 2 instances where y = .05. 4 Answers Sorted by: 2 Another option is to use data brush. 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). Issue Plotting 2 different Values. x-axis data is 1-9 because you did not provide any data for MATLAB to plot with. I first plot data using the scatter function, and then set the x-axis and y-axis limits. Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? Extract X,Y data from scatter plot. How can I extract data in a vector from semilogx figure? If you plot x versus y, the values are known and therefore the problem has not relation to the plotting. To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. PPVAL(PP,Xq) is the same as, You may receive emails, depending on your. So far you just know the max value. Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? Automatic xlim () selection: In this method, we specify the limit for the current axis or chart by using an automatic way. Accelerating the pace of engineering and science. Man, I just spent so long trying to figure this out. how to create different matrices? if you plot, in section tools,basic fitting you can evaluate, I agree with Jan - it's ambiguous. t = -0.5:1/Fs:0.5; % Time vector of 1 second. The first line intersects the set of points that follow x1 with the set of points that precede x2, and the return the indices. If the resolution of your data is high, it is likely that it will be a good approximation. Find the treasures in MATLAB Central and discover how the community can help you! 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