Matt J

Last seen: Today

7,443 2009 年以降の合計貢献数

Professional Interests: medical image processing, optimization algorithms

PLEASE NOTE: I do not read email sent through my author page. Please post questions about FEX submissions in their respective Comments section.

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For loop with nested if loop
Perhaps this is what you want, condition=( (HipVel > .0014) & (KneeAngle < minAngle); drop_time = VJ_P1_T1.data( condition ...

約11時間前 | 0

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whosGPU
Provides WHOS-like output for gpuArray variables in the current workspace.

約11時間前 | ダウンロード 0 件 |

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General conic curve fit with constrained coefficients
Here's a basic analytical fit, using the tools in this File Exchange package: [xy,T]=conicFit.homogNorm([x(:),y(:)].'); x=xy...

約18時間前 | 0

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How to check the Bytes of gpuArray?
See whosGPU (Download).

約20時間前 | 0

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Obtain memory usage and class for GPU variable
See whosGPU.

約20時間前 | 0

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GPU equivalent of "whos" or "feature memstat" ?
See this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/88024-whosgpu

約20時間前 | 0

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Fontsize using Latex interpreter
You can set fontsizes as shown here, https://www.mathworks.com/matlabcentral/answers/350036-latex-interpreter-with-sentences-an...

1日前 | 0

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how to write a bisection loop?
Because y is a polynomial, it is much more expedient to use roots(), y = [(-0.50598*10^-10) , (0.38292*10^-7) , (0.74363*10^-4)...

1日前 | 0

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How to compare two strings with different sizes?
Another guess: a = 'AAGCTACGC'; b = 'ACGCAA'; match = ( a(:)==b )

1日前 | 0

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feval distorted in ga after using nonlinearconstr
The main thing I see that looks out of place is that is the role of SSP_restored_1st15day. If it is a variable, I cannot see wh...

3日前 | 0

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How can I plot ln(1-x)/x using colon operator?
x = linspace(-10^(-15),10^(-15),300); f = log(1-x)./x; plot(x,f)

3日前 | 0

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How to plot a graph that I already have in on paper
Yuo can use this, https://www.mathworks.com/matlabcentral/fileexchange/7173-grabit to extract the points on the curve, which y...

3日前 | 0

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Check if nullspace is contained in another + finding intersection of 2 nullspaces.
Hints: (1) Consider [null(A), null(B)] (2) Consider [A;B]

3日前 | 1

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Linear programming code not showing the solution
As long as your feasible set is bounded, you can use this FEX submission instead, https://www.mathworks.com/matlabcentral/filee...

3日前 | 0

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exp(-b/x) fit, inf problem when fitting
When x goes to zero, y should go to zero as well since anything power negative infinity is zero. Only if b>=0. g = fittype('ex...

5日前 | 0

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accumulating unique indices in array
B = histcounts(A,1:max(A)+1)

5日前 | 0

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Sum subarrays of a Matrix.
Using sepblockfun https://www.mathworks.com/matlabcentral/fileexchange/48089-separable-block-wise-operations out=sepblockfun(A...

5日前 | 0

質問

Recover former state of Matlab Editor
I had quite a few files open in the Matlab Editor, but then inadvertently closed the editor window. Is there any way to re-open ...

6日前 | 1 件の回答 | 0

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How to calculate reveral summations
T=triu(ones(600)); I=(1:600).' + (1:600); ur=u(:).'; sigma= (T.*ur(I))*ur(1:600).';

6日前 | 0

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How to calculate reveral summations
Use conv() or xcorr().

6日前 | 0

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How do I minimize a particular error function with lsqnonlin?
I don't see much that I think can be improved, except perhaps to formulate it so that your errors are differentiable - the lsqno...

6日前 | 0

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Get "@" back in a table header (R2017b) when saving
For example, T=table(1,'VariableNames',"name_domain") T.Properties.VariableNames = replace(T.Properties.VariableNames,'_','@...

6日前 | 0

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How to find splitapply for multiple values
[G, idOcc,idAge] =findgroups(x.occupation,x.Age)

6日前 | 0

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Calculation the mean of a portion of a matrix
mean( z(2:end-1,2:end-1) ,'all')

6日前 | 0

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Rank one decomposition of a positive semi-definite matrix with inequality trace constraints
Is there any ways I could do the rank one decomposition of matrix X, such that The obvious answer seems to be to test each k to...

7日前 | 0

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create matrix of integers with specified sum in column and row
You can try to formulate it as an integer program. M=optimvar('M',[4,4],'type','integer'); Constraints.columns=sum(M,1)<=col...

7日前 | 0

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Finding Upper and Lower Indexes
A = [1;2;3;4;5;8]; B = [3.5;6;2]; c=interp1(A,A,B,'previous'); C=[c(:),c(:)+1]

9日前 | 1

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Row-normalizing large sparse matrix
The attempt you've posted will only work if vals_W is the same size as sum_vals, which can only occur when there is exactly one ...

10日前 | 0

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Object-oriented tools for fitting conics and quadrics
A tool set for fitting various conics and quadric surfaces, e.g., ellipses, cylinders, spheres, planes, and lines.

11日前 | ダウンロード 6 件 |

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Problem with fmincon fval
As Walter suggests, the multiple fvals per iteration are part of finite difference computations needed to evaluate the cost func...

11日前 | 0