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Petter Stefansson


NMBU

Attivo dal 2016

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How to show r square correlation and RMSE on a scatterplot
Given your x and y vectors, perhaps this is what you are looking for? plot(x, y, '*','displayname','Scatterplot') title('scatt...

oltre 5 anni fa | 4

| accettato

Domanda


Matlab gets basic arithmetic completely wrong!
I just had a Matlab experience that made me question everything. I have two vectors: |v1| and |v2|. Both are of length 10 0...

oltre 6 anni fa | 1 risposta | 0

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mexcuda not finding CUDA 9.0 even when I specify it via setenv('MW_NVCC_PATH',...)
I managed to solve the problem myself by editing the ‘nvcc_msvcpp2015.xml’ file and simply commenting out the line: <cmdRet...

oltre 6 anni fa | 0

| accettato

Domanda


mexcuda not finding CUDA 9.0 even when I specify it via setenv('MW_NVCC_PATH',...)
When I try to use mexcuda I get the error: Warning: Version 9.0 of the CUDA toolkit could not be found. If installed, set M...

oltre 6 anni fa | 2 risposte | 0

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Domanda


Text/strings not working in Matlab 2018a
I recently upgraded to Matlab 9.4.0.813654 (R2018a) from R2017a (where everything was working fine), and now whenever I plot thi...

quasi 7 anni fa | 1 risposta | 0

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Domanda


Unable to compile cuda code containing dynamic parallelism: Error: “ptxas fatal : Unresolved extern function 'cublasCreate_v2'”
I’m trying to create a simple mex function that calls cublas functions such as cublasDgemm from inside a kernel so I can utilize...

oltre 7 anni fa | 2 risposte | 0

2

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Domanda


MEX function with CUDA code works once. Then I need to restart Matlab or recompile it!?
I’ve written a |MEX| file that uses the |CUDA| solver, specifically the |cusolverDnDgesvd| function, to compute the equivalent o...

circa 8 anni fa | 2 risposte | 0

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Domanda


Duplicating an mxArray without first storing it as a plhs?
I’m writing a MEX file in C where I need to duplicate an |mxArray| in the code. What I’m currently doing is this: plhs[0] =...

circa 8 anni fa | 1 risposta | 0

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Domanda


Compiling CUDA files with mexcuda - why wont Matlab accept my compiler?!
Im trying to compile CUDA files into mex. Matlab ships with an example CUDA file located in |matlabfolder\toolbox\distcomp\g...

oltre 8 anni fa | 2 risposte | 0

2

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Domanda


Indexing a matrix with another matrix?
Hi. I have a |10000x4| matrix, |Idx|, where each row contains 4 indices to a logical matrix, |A|. I would like to set all ind...

oltre 8 anni fa | 1 risposta | 0

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Domanda


Multiply slices of a 4D array with vectors without nested loops? Is there a function comparable to pagefun for the CPU?
I want to multiply each 2D matrix slice of a 4D matrix, |X|, with a number of vectors, stored in Beta. If I was doing it on the ...

oltre 8 anni fa | 1 risposta | 0

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Domanda


How do I estimate the memory usage of a calculation on the GPU?
Hi. I have a parallel calculation that I’m doing on the GPU to speed up things compared to doing it on the CPU. However, the...

oltre 8 anni fa | 1 risposta | 1

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Domanda


Can I convert long binary strings into unique serial numbers of much shorter length?
I’m generating a very large number of long binary strings, for example: S1 = [0 0 1 1 0 0 0 0 0 0 1 0 1 1 0 0 0 …] S2 = ...

oltre 8 anni fa | 2 risposte | 0

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Domanda


How do I use the recursive dir function in release 2016b?
I’ve installed the pre-release version of matlab 2016b and one of the new features listed in the release notes is that the |dir|...

oltre 8 anni fa | 0 risposte | 0

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Domanda


Getting the regression coefficients for a lower number of Partial Least Squares components than specified by plsregress(X,Y,ncomp) without redoing the whole regression model?
When performing a regression with the |plsregress| command in matlab, you specify the number of components when you fit the mode...

oltre 8 anni fa | 0 risposte | 0

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Domanda


How do I sequentially partition the folds in cross validation?
I’m working on a partial least squares regression problem where I want to set up cross validation with a |cvpartition| object. H...

quasi 9 anni fa | 1 risposta | 1

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Domanda


Advice on vertical edge detection on grayscale image with very weak contrast
I’ve taken a large quantity of X-ray images of wooden samples and in order perform the analysis I’m trying to do I need to extra...

quasi 9 anni fa | 1 risposta | 0

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Risposto
Bug in Matlab/statistics toolbox or is there a typo in the plsregress example? (or something wrong with my Matlab installation?)
If others are running into the same problem, it seems to be solved by updating to matlab 2016a!

quasi 9 anni fa | 0

| accettato

Domanda


Bug in Matlab/statistics toolbox or is there a typo in the plsregress example? (or something wrong with my Matlab installation?)
I’m having problems with getting the partial least squares regression to work properly and I suspect that there either is someth...

quasi 9 anni fa | 1 risposta | 0

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