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check if mainAPP exist in app designer
No. MATLAB does not offer any any general mechanism to test whether variables of particular classes exist.

3 years ago | 1

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creating a big matrix (2000x2000x2000)
If you are using a 32 bit version of MATLAB (which was still possible in the time of your R2009a release) then what you are aski...

3 years ago | 2

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write matlab code for this expression
appears to be a set of functions. You will need to use a cell array of function handles and index it like tau{i,j}(t) You wi...

3 years ago | 0

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Not enough input arguments. Error in iyp2. there are 4 varible@(tau,ztau,zpa,t) in the iyP(tau,ztau,zpa,t)but t is independent for sum
iyp2=@(tau,ztau,zpa,t)cell2mat(arrayfun(@(tau,ztau,zpa,t)iyP(tau,ztau,zpa,t),tau,ztau,zpa,t,'UniformOutput',0)); iyp2 is define...

3 years ago | 0

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Error using arrayfun All of the input arguments must be of the same size and shape. Previous inputs had size 14 in dimension 1. Input #5 has size 1
iyp2=@(tau,ztau,zpa,t)cell2mat(arrayfun(@(tau,ztau,zpa,t)iyP(tau,ztau,zpa,t),tau,ztau,zpa,t,'UniformOutput',0)); ...

3 years ago | 0

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How can i create array of symbolic expressions?
syms t y(t) That creates y(t) as a symfun not as a sym d= diff(y) When you differentiate a symfun then the output is a symfun...

3 years ago | 0

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Unrecognized function or variable 'zap'. the error -20 line. I don't know how to use multiple-integral function
f1=@(tau,ztau,zpa,u)((2*sqrt(2*alpha*zpath.*ztau)./(sinh(tau.*sqrt(alpha./2))))./sqrt((pi^3).*zpa).*exp(-(2*sqrt(2*alpha*zpath....

3 years ago | 0

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Can I extract the code of an .mlapp without opening App Designer?
See https://undocumentedmatlab.com/articles/appdesigner-mlapp-file-format for information about the internal structure of mlapp ...

3 years ago | 1

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Answered
When exactly does BytesAvailableFcn run?
Timer functions are (somewhere) documented as executing at the beginning of the next line of MATLAB code that executes. I would ...

3 years ago | 1

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How can plot boundary to quiver figure
You can use boundary to obtain a bounding outline. You might want to play with the alpha coefficient. Once you have a boundary...

3 years ago | 0

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Niftiinfo do not keep negative values
I stepped through the code that reads the image. The data as it is stored in the file has no negative values. The only items th...

3 years ago | 0

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Answered
CLA to Clear Out Axes Not Working in Slider Callback Function
If you have performance issues, then you should be re-working your graphics a fair bit. For performance, create your axes and t...

3 years ago | 0

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Answered
How to insert cell array into first row of excel worksheet using worksheet and workbook properties (dot notation)?
For a fair number of releases now, on Windows, xlsread() and xlswrite() leave activex sessions open talking to Excel . This is d...

3 years ago | 0

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I wonder why the following code is not able to give a valid output? My objective is to solve a system of simultaneous ODEs with dirac comb func.
Whne you use heaviside or dirac delta, and you go for a numeric solution with any of the ode*() functions, then you must use an ...

3 years ago | 0

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How to get value of function x=f'(y)
You do not. You have exp((V+I.*Rs)./Vt_Ta) as one of the terms creating a new I each time, so as you go on your terms getting ...

3 years ago | 0

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Real time plot is very slow when I try to graph 6 subplot
Do not keep calling subplot and so on. Set up the subplots and titles ahead of time. In each one, call animatedline() and reco...

3 years ago | 0

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convert code from mathematica to matlab
In Mathematica, that code defines an anonmymous function of one parameter that runs a while loop to do a calculation, and then i...

3 years ago | 0

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Maximum recursion limit of 501 reached. Use set(0,'RecursionLimit',N) to change the limit. Be aware that exceeding your available stack space can crash MATLAB and/or your comp
You have a script or function named mosek that is invoking mosek The most common cause of this kind of infinite recursion is pe...

3 years ago | 0

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Can I reduce the serialport 's write function call time
Are there settings for the serial port that will make the write command run faster? I developed a code to write uint16 words to...

3 years ago | 1

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Change to Text Colour to "RED" after a Logical statement is True and the "Return" Function NOT Terminating
fprintf(2, '\nRevise Cable Size to Meet Minimum Requirements for Ampacity;\n'); %notice the 2 The color does not show up here,...

3 years ago | 1

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How to crop image into 256 x 256 x 3 if the original image is 841 x 482 x 3 uint8 if using the centroide of the lesion with x_cent = 720 and y_cent = 151?
I2 = I(ymin:ymin+size_of_cropped_img-1, xmin:xmin+size_of_cropped_img-1, :);

3 years ago | 0

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Answered
immutable outputs from matlab functions
No. The closest you can get is to create a class that does not have a public set method for the properties.

3 years ago | 0

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Read 1.0 as 1.0 with fscanf(fid, '%f').
This is not possible in MATLAB. "format short g" instructs matlab to use specific output rules *for display* that are not compat...

3 years ago | 0

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Answered
How to change 257x251x1 uint8 into 257x251x3 uint8?
I=imread('1222.png'); if ndims(I) == 2; I = I(:,:,[1 1 1]); end %convert to rgb

3 years ago | 0

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Answered
Image won`t output after noising.
load facets; nbc = size(map,1); subplot(2,3,1); imshow(X,[]); title('as grayscale'); colorbar Xcolor = ind2rgb(X, map); Xgray...

3 years ago | 1

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Answered
Running MATLAB code using the Runtime
It needs to be compiled with MATLAB Compiler. The MATLAB Runtime is only for use with programs compiled with MATLAB Compiler or ...

3 years ago | 0

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Answered
Why won't Matlab plot or finish running my code due to the value of 1 variable?
You have to reduce the upper bound on the time by quite a bit. With you current code, with ode45, after running for about 45 min...

3 years ago | 0

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Index exceeds the number of array elements
[~,M_pos] = ode45(xd,[ti tf],[0 0 0 0],optimset); That line is going to take whatever xd is and attempt to pass two parameters ...

3 years ago | 0

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division of factor in polynomial
expr = str2sym('(4*R^3*r^2*y^2 + R^3*y^4 + 4*R^2*r^3*x^2 + 2*R*r^2*x^2*y^2 + r^3*x^4)/(8*R^3*r^3)') expand(expr)

3 years ago | 0

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Answered
Out of memory error on interpolation
You are not running out of memory in a call to interp3(): you are running out of memory in a call to ncread() The data file tha...

3 years ago | 0