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time date to datenum and datenum to datetime
I'm going to assume that you've imported this data into MATLAB as a string array or a cellstr with two columns. Since I don't ha...

4 years ago | 1

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What does it mean to take the absolute of an complex number? And why is it always positive?
I think one potential source of confusion is that the abs of this particular complex number looks an awful lot like its real par...

4 years ago | 1

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Error using matlab.internal.math.interp1 The sample points must be finite.
Error in coolprop_tab.MoistAir.calcMoistHeatCool (line 783) tOut(:,i) = interp1(x(:,i),v(:,i),xq(:,i)); Set a ...

4 years ago | 2

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Answered
Python function to Matlab
As @Anagha Mittal and @Akanksha Shrimal have stated there is a function in Financial Toolbox called movavg. However I'd recomme...

4 years ago | 0

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Calculate the distance between points in a large data set
John showed you one approach. Two others that come to mind are to use the hypot or vecnorm functions. % Sample data xy = rand(...

4 years ago | 0

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MATLAB gives the integer value of subtraction when the difference between numbers is large.
What's the distance from the elements of b to the next larger number? b = 10^23 distance = eps(b) If you were to add 1 to b, ...

4 years ago | 0

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MATLAB function run in 2021a producing graphics handles as unique doubles (pre-2014 behavior) rather than handle objects
Without seeing what you're doing I'm only guessing, but I suspect you're preallocating an array as a double array and assigning ...

4 years ago | 2

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Answered
Split matrix into square cells
Use the histcounts2 function.

4 years ago | 2

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How to publish as pdf from command tab
To do this using the publish function use the codeToEvaluate name-value pair argument as shown in the "Generate HTML View of MAT...

4 years ago | 1

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Answered
how to draw contour plot
There are a couple potential problems here. Did you really mean to make x a 1-element vector or did you mean to go from 0 to 1 i...

4 years ago | 1

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Hi, do you know why I can't open the variable window by doule clicking any variables?
My suspicion is that you've written or downloaded a function with the same name as one of the functions included in MATLAB that ...

4 years ago | 1

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To get x and y coordinates of the edges in a Delaunay Triangulation
Let's build a sample delaunayTriangulation using the first example on its documentation page. rng default; P = rand([30 2]); ...

4 years ago | 1

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Event in ode45 doesn't work
You don't want to use == in defining the first output of your event function. That will make the value of your event function 0 ...

4 years ago | 0

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Create MException object with a custom non-empty stack (without actually throwing it)
Preallocate a cell array. M = cell(1, 3); Run the code that may throw an error. If it does, catch the error in the appropriate...

4 years ago | 0

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Animated 3D Scatter Plot
Rather than recreating the scatter plot each time, I'd apply the first of the techniques listed on the Animation Techniques docu...

4 years ago | 1

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Why this piece of code gives error?
Either make your CostFunction variable a function handle to the fun4sn0 function (which is the approach I'd prefer): CostFuncti...

4 years ago | 0

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ode return NaN :(
What is at time t = 0? By your formula 14 it is times other stuff. Let's ignore that other stuff and look at the value of that...

4 years ago | 1

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Draw the 3-D plot for the function f(t)= (t, t ^2, t ^3), where 0 <= t <=100.
You're close. f=(t,t^2,t^3); Instead of trying to define f like this (and then not using it) define the variables x, y, and z ...

4 years ago | 0

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I got something wrong with the hep document
Check if you've written or downloaded a split.m file that's taken precedence over the split function included in MATLAB. which ...

4 years ago | 1

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Answered
Property value validation with values from file
The census.mat file contains two variables, cdate and pop. whos -file census.mat Let's write a function that will retrieve the...

4 years ago | 0

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Answered
I want to extract the linear x and y data from the overall data. I have version 2017a in which "ischange" function is not present any alternatove method
So you want to detrend your data? The detrend function has existed since before release R2006a.

4 years ago | 0

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Parse error at " end "
When you get a parse error like this, look for the Code Analyzer messages in the Editor's right margin. Of particular importance...

4 years ago | 0

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Where can I find Fcn block in simulink in matlab R2022a?
Which of the blocks in the User-Defined Functions library do you want to use? I'm guessing you want either MATLAB Function or I...

4 years ago | 1

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How to get the sum of the rows of a matrix?
Use the sum function.

4 years ago | 0

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I want the matlab code of Discrete Tchebichef Transform and its inverse version
https://www.mathworks.com/matlabcentral/answers/88670-is-there-a-code-in-matlab-for-discrete-tchebichef-transform-dtt?s_tid=answ...

4 years ago | 0

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Answers of equation are mismatch
Use element-wise operations instead of array operations. h = linspace(24,62.5,20); % Height of Trapzoid w = 81-0.54...

4 years ago | 1

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Simplifying Complex expressions in Matlab Symbolic Toolbox
Did you mean to assume that x, y, xv, yv, and/or T are real? syms x1 y1 real syms x2 y2 z1 = x1 + 1i*y1 z2 = x2 + 1i*y2 z1c...

4 years ago | 0

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weird Matlab+Windows Scheduler Behavior
The Add Arguments is set to -r -nodesktop -nosplash "run GBB_lvl1" So you're telling MATLAB to run a command (with the -r optio...

4 years ago | 1

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Create variable number of random streams (unique, deterministic, independent)
See the "Substreams" and "Restore State of Random Number Generator to Reproduce Output" sections on this documentation page for ...

4 years ago | 0

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Answered
How to increase number of contour lines in a plot?
f = @(x1,x2) (x1-5).^2+(x2-4).^2; % Vectorized the function h = fcontour(f,[0 10 0 10]); % Let MATLAB choose the number and hei...

4 years ago | 1