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Error using the fmincon function
No, the constraint and objective functions have to return real values to be considered "defined". Possibly you have log() or sq...

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Aquiring images from mobile camera is too slow
Yes, you can postpone the image display until after the acquisition. N=1000; [img,t]=deal(cell(1,N)); for i=1:N [img{i},...

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Plotting, how can I stop fill hiding the tickmarks?
X = 0:20; Y = sin(X/10); plot(X, Y, 'ko'); hold on; % Draw white patch (e.g., to "highlight" a region) Xfill = [10 20 20...

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Spatial filtering of cylindrical data
Using padarray you can pad circularly in theta and symmetrically in z and then filter with 'valid' shape flags. If you are filte...

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find sequence in a matrix
I=[0 1 0 1 1 1 0 0 0 1 1 1 0 0 1 0 1 0;0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 0 1;1 1 0 1 0 1 0 0 0 1 0 1 0 0 1 1 1 0]; k=3; Ik=str...

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Launch a desktop layout programmatically
In the Environment seciton of the desktop's Home Tab, there is an area for saving and loading one's preferred desktop layouts: ...

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Quick Access bar capacity
One option that had occurred to me was to create a figure, as below) filled with uicontrol buttons which could serve the same pu...

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find sequence in a matrix
I=[0 1 0 1 1 1 0 0 0 1 1 1 0 0 1 0 1 0;0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 0 1;1 1 0 1 0 1 0 0 0 1 0 1 0 0 1 1 1 0] k=3; [minv...

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how to determine the wavelengths of an fft of a non-dimensional sequence
Perhaps as follows? %Example N=100; t=linspace(0,2*pi,N+1); t(end)=[]; x1=sin(t) ; %Wavelength N=100 x2=sin(2*t) ; %Wavelen...

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Question


Quick Access bar capacity
My Quick Access bar is filling up: What happens when I want to add more buttons than will fit on the top blue strip, even...

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Index exceeds the number of array elements
Either testarray is shorter than you planned or sentsize(1) is larger than you planned. Specifically sentsize(1)+35 is exceedin...

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Obtain Pixel Shift from Registered Images
There's no reason you can't use the tform from imregtform to imwarp the original images, even if the registration was done on cr...

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Trouble using container with cell type for key and structure array for values..
Perhaps use a dictionary, instead of containers.Map? keys = compose("A0%.2d" , 1:15); values = struct('abc', num2cell(1:15));...

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How to prevent parfor from slowing down towards later iterations?
Is there a way to change this? I suspect not. Firstly, if you have reduction variables, the workers that aren't iterating aren'...

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How can I reduce the "method error" with my central-difference method, when estimating a Jacobian matrix of partial derivatives?
Try making the step size adaptive to the evaluation points. E.g. f=@(x) x.^3; %function g=@(x) 3*x.^2;%true derivative G=@(x...

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How can I draw a circular trend line in a heat map?
If the trend line is supposed to be elliptical, you can use gaussfitn, https://www.mathworks.com/matlabcentral/fileexchange/691...

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How do I add semi-colons to lines of MATLAB code automatically in MATLAB?
You can use favoriteForceSemicolons.m from this File Exchange download, https://www.mathworks.com/matlabcentral/fileexchange/18...

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Is there a way to suppress command outputs to command window?
As a partial solution, you can use favoriteForceSemicolons.m from this File Exchange download, https://www.mathworks.com/matlab...

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Keyboard shortcut to evaluate current line?
I have created this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modif...

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Programmatically paste into the Matlab Editor
I have created this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modif...

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How to save the proceesed image in the same size as input image
outputImage=imresize(outputImage,OutputSize=size(inputImage)); imwrite(outputImage , filename);

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coneprog 代码生成过程中报错：'secondordercone' not supported for code generation.
Upgrade to R2024b where it is supported, https://www.mathworks.com/help/releases/R2024b/optim/ug/coneprog.html#mw_9834fbc9-e577...

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How can we see yticks below zero as positive and keep labels updated when zooming in?
x=linspace(-1,1); plot(x,x.^3); yline(0); ax=gca; ax.YTickLabels = erase(ax.YTickLabels,'-');

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Matrix is generating one larger than it should be
Does it help to remove the +1 from this line? Or, perhaps the loop should run from n=1:Z. Otherwise the finalcolumn of q never ...

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How to expand a matrix and interpolate between values?
See retime, e.g., T=timetable(hours([1;2;3]),[1.1,5.6,3.2]', ... 'DimensionNames',{'Time','Degrees C'}, ... ...

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Extract consecutive elements from a vector in a sliding manner
A = [1 ;2 ;3 ;4 ;5 ;6]; Ar=reshape(A,2,[]); for i=1:size(Ar,2) A_slice=Ar(:,i) end

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Help me get this shape on the masks
This requires a File Exchange download, https://www.mathworks.com/matlabcentral/fileexchange/71226-tspsearch load BW dsk=@...

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What do you think of my numerical Jacobian, using the central-difference method?
I'm assuming rdots and rddots are symbolic functions, based on your previous posts and on the fact that you have concatenated th...

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Question


Programmatically paste into the Matlab Editor
I have highlighted a selection of text in the Matlab editor. I would like to run a command, in the command window, that will rep...

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My 6x6 symbolic Jacobian matrix is massive, and matlabFunction( ) is having trouble writing the corresponding numerical function file.
Maybe just compute the Jacobian numerically, by finite differences? If the analytical expressions for the Jacobian are that mass...

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