Answered
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...
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...
11 months ago | 0
| accepted
Answered
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...
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...
11 months ago | 1
| accepted
Answered
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...
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...
11 months ago | 0
Answered
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...
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...
11 months ago | 0
Answered
Keyboard shortcut to evaluate current line?
I have created this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modif...
Keyboard shortcut to evaluate current line?
I have created this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modif...
11 months ago | 1
Answered
Programmatically paste into the Matlab Editor
I have created this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modif...
Programmatically paste into the Matlab Editor
I have created this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modif...
11 months ago | 1
| accepted
Answered
How to save the proceesed image in the same size as input image
outputImage=imresize(outputImage,OutputSize=size(inputImage)); imwrite(outputImage , filename);
How to save the proceesed image in the same size as input image
outputImage=imresize(outputImage,OutputSize=size(inputImage)); imwrite(outputImage , filename);
11 months ago | 0
| accepted
Answered
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...
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...
11 months ago | 0
| accepted
Answered
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,'-');
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,'-');
11 months ago | 0
Answered
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 ...
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 ...
11 months ago | 0
Answered
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'}, ... ...
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'}, ... ...
11 months ago | 0
| accepted
Answered
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
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
11 months ago | 1
| accepted
Answered
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=@...
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=@...
11 months ago | 1
| accepted
Answered
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...
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...
11 months ago | 0
| accepted
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...
11 months ago | 1 answer | 0
1
answerAnswered
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...
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...
11 months ago | 0
| accepted
Answered
Generating dynamic legend without duplicates
One way: load Inputs mySelectedPalette = myPalette24; % Code Block 1 % Split input data into a section below trade exces...
Generating dynamic legend without duplicates
One way: load Inputs mySelectedPalette = myPalette24; % Code Block 1 % Split input data into a section below trade exces...
11 months ago | 0
Answered
Manual Input of Classes for unet Deep Learning Network
This worked for me: load('debug.mat') %Reorganize training data T=training_data.UnderlyingDatastores{2}.readall; T=reorder...
Manual Input of Classes for unet Deep Learning Network
This worked for me: load('debug.mat') %Reorganize training data T=training_data.UnderlyingDatastores{2}.readall; T=reorder...
11 months ago | 0
| accepted
Answered
Why "saveobj" is invoked two times when saving a object?
I don't know why saveobj is called twice. Perhaps the first call is so save() can obtain a template of the object to be stored i...
Why "saveobj" is invoked two times when saving a object?
I don't know why saveobj is called twice. Perhaps the first call is so save() can obtain a template of the object to be stored i...
11 months ago | 0
Answered
Sparse matrix division results in "array exceeds maximum array size preference" in one case but not another
When circ_pml = 1, your URyy matrix conatins Inf values. This confuses inv,mrdivide, and other similar operators.
Sparse matrix division results in "array exceeds maximum array size preference" in one case but not another
When circ_pml = 1, your URyy matrix conatins Inf values. This confuses inv,mrdivide, and other similar operators.
11 months ago | 1
| accepted
Answered
How do I get each iteration of a for loop into a single row matrix?
Data=[ 11 17 13 4 12 8 12 10 7 14 12 6 10 14 11 ...
How do I get each iteration of a for loop into a single row matrix?
Data=[ 11 17 13 4 12 8 12 10 7 14 12 6 10 14 11 ...
11 months ago | 0
Answered
How to replace multiple xlsread commands
data1 = {'dog',1,3,'cat'; 10 12 'fish' 17} idx=cellfun(@isnumeric,data1); NUM1=nan(size(data1)); NUM1(idx)=cell2mat(data1...
How to replace multiple xlsread commands
data1 = {'dog',1,3,'cat'; 10 12 'fish' 17} idx=cellfun(@isnumeric,data1); NUM1=nan(size(data1)); NUM1(idx)=cell2mat(data1...
11 months ago | 0
| accepted
Answered
Constraint tolerance setting is not working
You need to demonstrate the problem with code, but based on your description, nothing is obviously wrong as far as the constrain...
Constraint tolerance setting is not working
You need to demonstrate the problem with code, but based on your description, nothing is obviously wrong as far as the constrain...
11 months ago | 0
Answered
Extract Text and Values from String
str = 'AB(16.7)CD[20.6]EF[.1] 864.4 Round'; S=strsplit(str,{'(',')','[',']',' '}); Types=S([1,3,5]) Vals=str2double(S([...
Extract Text and Values from String
str = 'AB(16.7)CD[20.6]EF[.1] 864.4 Round'; S=strsplit(str,{'(',')','[',']',' '}); Types=S([1,3,5]) Vals=str2double(S([...
11 months ago | 1
| accepted
Answered
Storing values from a loop in an array
N=1e7; %Maximum allowed number of iterations. ysave=nan(1,N); for i=1:N dV_y = (dt/m)*((0.5*rho*C_D*S)-m*g); ...
Storing values from a loop in an array
N=1e7; %Maximum allowed number of iterations. ysave=nan(1,N); for i=1:N dV_y = (dt/m)*((0.5*rho*C_D*S)-m*g); ...
11 months ago | 0
| accepted
Answered
Separating intersecting blobs on an image
This uses some tools downloadable from, https://www.mathworks.com/matlabcentral/fileexchange/90762-further-tools-for-analyzing-...
Separating intersecting blobs on an image
This uses some tools downloadable from, https://www.mathworks.com/matlabcentral/fileexchange/90762-further-tools-for-analyzing-...
11 months ago | 1
| accepted
Answered
Unrecognized function or variable 'transformerLayer'
I don't see transformerLayer in the documentation anywhere, so I imagine it does not exist, and that you are probabaly running a...
Unrecognized function or variable 'transformerLayer'
I don't see transformerLayer in the documentation anywhere, so I imagine it does not exist, and that you are probabaly running a...
11 months ago | 0
Submitted
Find vertices in image of convex polygon
Estimates the corner points of a pixelated convex polygon having a known number of vertices.
11 months ago | 3 downloads |
Answered
Modifying loss function in neural network to be dependent on previous losses
It would require a custom training loop, https://www.mathworks.com/help/deeplearning/ug/train-network-using-custom-training-loo...
Modifying loss function in neural network to be dependent on previous losses
It would require a custom training loop, https://www.mathworks.com/help/deeplearning/ug/train-network-using-custom-training-loo...
11 months ago | 1