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Calculation of the surface area of a generic solid
One way might be to read the stl file into a triangulation object using stlread. With the triangulation object, you can use free...
Calculation of the surface area of a generic solid
One way might be to read the stl file into a triangulation object using stlread. With the triangulation object, you can use free...
14日 前 | 0
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spatialgraph2D
Creates a graph object with 2D spatial locations associated with the nodes
15日 前 | ダウンロード 7 件 |
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Concatenate into a matrix is not saving and is overriding every iteration?
Ns=numel(subjs); Nt=numel(time); percent_change=cell(Ns,1); for s = 1:Ns subj = subjs{s}; for i = Nt:-1:1 ...
Concatenate into a matrix is not saving and is overriding every iteration?
Ns=numel(subjs); Nt=numel(time); percent_change=cell(Ns,1); for s = 1:Ns subj = subjs{s}; for i = Nt:-1:1 ...
16日 前 | 1
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How to create transformation matrix
You wouldn't use a transformation matrix to execute a deformation like that. You would just use griddedInterpolant or interp3 to...
How to create transformation matrix
You wouldn't use a transformation matrix to execute a deformation like that. You would just use griddedInterpolant or interp3 to...
17日 前 | 0
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Revolving a 2D plot around its vertical axis to generate 3D surface
https://www.mathworks.com/matlabcentral/answers/1716995-revolving-a-curve-about-the-y-axis-to-generate-a-3d-surface#answer_96206...
Revolving a 2D plot around its vertical axis to generate 3D surface
https://www.mathworks.com/matlabcentral/answers/1716995-revolving-a-curve-about-the-y-axis-to-generate-a-3d-surface#answer_96206...
17日 前 | 0
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How to pass from a set of points to lines interpolating them?
Image=load('codice_opcode.mat').out; B=bwboundaries(Image); B(1)=[]; imagesc(Image); colormap(gray); axis image; hold on...
How to pass from a set of points to lines interpolating them?
Image=load('codice_opcode.mat').out; B=bwboundaries(Image); B(1)=[]; imagesc(Image); colormap(gray); axis image; hold on...
18日 前 | 0
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How to group logical numbers in a vector?
Use this: https://www.mathworks.com/matlabcentral/fileexchange/78008-tools-for-processing-consecutive-repetitions-in-vectors ...
How to group logical numbers in a vector?
Use this: https://www.mathworks.com/matlabcentral/fileexchange/78008-tools-for-processing-consecutive-repetitions-in-vectors ...
18日 前 | 0
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Cycle for to save a matrix
[nr,mr]=size(Range_compression); [time_compression,range_compressed]=deal(nan(nr,mr)); for i=1:mr [time_compression(...
Cycle for to save a matrix
[nr,mr]=size(Range_compression); [time_compression,range_compressed]=deal(nan(nr,mr)); for i=1:mr [time_compression(...
20日 前 | 0
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Find pattern in vector while ignoring/skipping certain indices
vec=[0 4 1 0 6 5 0 8 7, 3 3 3 , 0 4 2 0 6 4 0 8 6]; %patterns start at i=1 and i=13 pat = [0 4 nan 0 6 nan 0 8 nan]; ...
Find pattern in vector while ignoring/skipping certain indices
vec=[0 4 1 0 6 5 0 8 7, 3 3 3 , 0 4 2 0 6 4 0 8 6]; %patterns start at i=1 and i=13 pat = [0 4 nan 0 6 nan 0 8 nan]; ...
20日 前 | 0
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How do I convolve a periodic rect function with comb function
Another possibility is to download interpMatrix https://www.mathworks.com/matlabcentral/fileexchange/26292-regular-control-poin...
How do I convolve a periodic rect function with comb function
Another possibility is to download interpMatrix https://www.mathworks.com/matlabcentral/fileexchange/26292-regular-control-poin...
20日 前 | 0
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How do I convolve a periodic rect function with comb function
X=1; Y=2; rect=@(s) 0<=s & s<=1/2; r=@(s) rect(mod(s+1/4,1)); [x,y]=meshgrid(-3*X:0.01:+3*X, -3*Y:0.01:+3*Y); P=r(x/X).*...
How do I convolve a periodic rect function with comb function
X=1; Y=2; rect=@(s) 0<=s & s<=1/2; r=@(s) rect(mod(s+1/4,1)); [x,y]=meshgrid(-3*X:0.01:+3*X, -3*Y:0.01:+3*Y); P=r(x/X).*...
20日 前 | 0
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Multiple toolboxes with lots of redundant features?
The issue you've raised would only be a problematic one if it somehow forced people to buy more toolboxes than they should need....
Multiple toolboxes with lots of redundant features?
The issue you've raised would only be a problematic one if it somehow forced people to buy more toolboxes than they should need....
21日 前 | 0
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How to plot the following surface
fsurf(@(x,y) sqrt(x.^2+y.^2)+1, [-3 3 -3 3] ) zlim([1,3])
How to plot the following surface
fsurf(@(x,y) sqrt(x.^2+y.^2)+1, [-3 3 -3 3] ) zlim([1,3])
21日 前 | 1
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How to plot the following surface
fimplicit3(@(x,y,z) (z-1).^2-x.^2-y.^2, [-3 3 -3 3 1 3] )
How to plot the following surface
fimplicit3(@(x,y,z) (z-1).^2-x.^2-y.^2, [-3 3 -3 3 1 3] )
21日 前 | 1
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Sum elements over indices in cell array
Once you've split things into cells, there is nothing faster than a loop. The better data organization would be to use group lab...
Sum elements over indices in cell array
Once you've split things into cells, there is nothing faster than a loop. The better data organization would be to use group lab...
21日 前 | 0
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How to Handle Estimating Parameters With MLE and Fmincon Errors
The error is thrown because your confun tries to return a variable called ceq which you never create. You do create a variable c...
How to Handle Estimating Parameters With MLE and Fmincon Errors
The error is thrown because your confun tries to return a variable called ceq which you never create. You do create a variable c...
21日 前 | 0
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Sorting coordinates on radial distance from origin
Here's one way to do that: [~,distance] = cart2pol(x-x0,y-y0); %distances from (x0,y0) count = nnz(dist_Lower<=distance & d...
Sorting coordinates on radial distance from origin
Here's one way to do that: [~,distance] = cart2pol(x-x0,y-y0); %distances from (x0,y0) count = nnz(dist_Lower<=distance & d...
21日 前 | 0
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Hello everybody I have a question . I have a cuboid shape, I want to calculate all the points within this figure as x,y values and save to workspace>
tf = inpolygon(xq,yq,[2.23 0.1404 8.258 10.37],[14.95 0.9339 1.579 15.61 ]); x=xq(tf); y=yq(tf);
Hello everybody I have a question . I have a cuboid shape, I want to calculate all the points within this figure as x,y values and save to workspace>
tf = inpolygon(xq,yq,[2.23 0.1404 8.258 10.37],[14.95 0.9339 1.579 15.61 ]); x=xq(tf); y=yq(tf);
21日 前 | 0
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Add cells into a square
ex = [0 1 1 0]; ey = [0 0 1 1]; pgon = scale(polyshape(ex,ey),1/4); %prototype [I,J]=ndgrid((0:3)/4); pgon=arrayfun(@(...
Add cells into a square
ex = [0 1 1 0]; ey = [0 0 1 1]; pgon = scale(polyshape(ex,ey),1/4); %prototype [I,J]=ndgrid((0:3)/4); pgon=arrayfun(@(...
21日 前 | 0
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Suggestions to speed up FFT of convolution
If you have R2022a, Mhelp=repmat(M,[rep(1),rep(2),rep(3),1]); %Fourier transform ftM=fftn(-Mhelp,[nxP nyP n...
Suggestions to speed up FFT of convolution
If you have R2022a, Mhelp=repmat(M,[rep(1),rep(2),rep(3),1]); %Fourier transform ftM=fftn(-Mhelp,[nxP nyP n...
21日 前 | 1
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Suggestions to speed up FFT of convolution
I see a doubling of the speed if you re-organize your4D and 5D arrays as cell arrays: Mhelp=num2cell(Mhelp,[1,2,3]); ftN=squee...
Suggestions to speed up FFT of convolution
I see a doubling of the speed if you re-organize your4D and 5D arrays as cell arrays: Mhelp=num2cell(Mhelp,[1,2,3]); ftN=squee...
22日 前 | 1
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How to remove a range of rows from all nested structures of a parent structure?
s.a.f=[1,2,3]; s.b.f=[4,5,6]; s.a,s.b for F=string(fieldnames(s)') s.(F)=structfun(@(f)f(1), s.(F),'uni',0); ...
How to remove a range of rows from all nested structures of a parent structure?
s.a.f=[1,2,3]; s.b.f=[4,5,6]; s.a,s.b for F=string(fieldnames(s)') s.(F)=structfun(@(f)f(1), s.(F),'uni',0); ...
22日 前 | 0
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Summation of column elements of matrix A from index values of matrix B
A=randi(10,3) , B=randi(10,3); [m,n]=size(B); [~,I]=sort(B), J=repmat((1:n)',1,m); D=sum( A( sub2ind(size(A),...
Summation of column elements of matrix A from index values of matrix B
A=randi(10,3) , B=randi(10,3); [m,n]=size(B); [~,I]=sort(B), J=repmat((1:n)',1,m); D=sum( A( sub2ind(size(A),...
23日 前 | 0
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MATLAB lsqcurvefitting using real data
This example shows how to read data from a specified sheet, https://www.mathworks.com/help/matlab/ref/readmatrix.html#mw_8ad99a...
MATLAB lsqcurvefitting using real data
This example shows how to read data from a specified sheet, https://www.mathworks.com/help/matlab/ref/readmatrix.html#mw_8ad99a...
23日 前 | 0
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Overloading math operations on cell arrays
I don't want to define a class, but just add cell arrays without fuss. What's the big deal with defining a class? See attached...
Overloading math operations on cell arrays
I don't want to define a class, but just add cell arrays without fuss. What's the big deal with defining a class? See attached...
23日 前 | 0
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Operands to the logical AND (&&) and OR (||) operators must be convertible to logical scalar values. Use the ANY or ALL functions to reduce operands to logical scalar values.
As you can see from the debugger screenshot your t does not remain a scalar as your code loops. Is that supposed to happen, and ...
Operands to the logical AND (&&) and OR (||) operators must be convertible to logical scalar values. Use the ANY or ALL functions to reduce operands to logical scalar values.
As you can see from the debugger screenshot your t does not remain a scalar as your code loops. Is that supposed to happen, and ...
23日 前 | 0
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What is the difference between valuechangedfcn and valuechangingfcn?
Is that for doing something when a user clicks within the field and has not yet finished entering the new value, and the GUI wou...
What is the difference between valuechangedfcn and valuechangingfcn?
Is that for doing something when a user clicks within the field and has not yet finished entering the new value, and the GUI wou...
23日 前 | 2
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valid indices in a parfor loop
You are trying to use the parfor loop to fill a pre-existing matrix mat. The only type of parfor variable for which this is allo...
valid indices in a parfor loop
You are trying to use the parfor loop to fill a pre-existing matrix mat. The only type of parfor variable for which this is allo...
23日 前 | 0
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Solving the linear equation
Because you have 72 equations and only 9 unknowns. The system is over-determined.
Solving the linear equation
Because you have 72 equations and only 9 unknowns. The system is over-determined.
23日 前 | 1
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