Question

Calculating product of a vector with sparse matrix symbolically

Hi, I have access to sparse matrix A, most (not all) of whose elements are block diagonal. Is there a easy way to calculat...

3 years ago | 0 Answers | 0

Question

Nifti file: How to save 4D

Hi, I have 4D array (256 x 192 x 64 x 3) that I get after data processing and I want to save it as nifti file. However, I hav...

3 years ago | 0 Answers | 0

Question

Using multiple GPU cards for serial task

Hi, I am planning to buy a GPU for faster computation. Since I am not too familiar with GPU computing, I would like to k...

4 years ago | 1 Answers | 0

Responded

Re: imshow: how to use colorbar and caxis([]) command

I would appreciate help.

4 years ago | 1500 views

Posted

imshow: how to use colorbar and caxis([]) command

Hi, I am using imshow to display “myelin water fraction” map (values between 0 and 1) after converting it to jet color scheme a...

4 years ago | 1500 views

Posted

Problem with colorbar

Hi, I am trying to display analysis of MRI data using 3D scalar visualization. I have used the following program: http://www.m...

5 years ago | 1236 views

Responded

Re: Matlab Spase matrix format.

Solved that problem. Please ignore previous message.

6 years ago | 3574 views

Responded

Re: Matlab Spase matrix format.

Thanks James, When I implemented as you suggested: I got an error: tsnnls_test1.cpp tsnnls_test1.cpp(250) : error C2039: 'tau...

6 years ago | 3574 views

Posted

Mex File: fatal error LNK1120: 7 unresolved externals

I am making mex file out of tsnnls_test1.cpp and all relevant headers are included. I am getting linking error. For instance, ...

6 years ago | 7380 views

Responded

Re: Mex: Linking Error

Help me please... The original program compiles fine. So, i seems to be the linking problem only.

6 years ago | 1274 views

Posted

Mex: Linking Error

I am making mex file out of tsnnls_test1.cpp which includes relevant hedaers. I am getting linking error. For instance, I can s...

6 years ago | 1274 views

Responded

Re: Mex File: Can not find some C header.

Now, I am getting linking error. For instance, I can see the function t_snnls_spiv declared in tsnnls.h and defined in tsnnls.c....

6 years ago | 5272 views

Responded

Re: Matlab Spase matrix format.

Hi James, Thanks for responding. Ultimately I would like to convert matlab sparse or dense matrix array to the matrix format e...

6 years ago | 3574 views

Responded

Re: Mex File: Can not find some C header.

I would also like to add that this seems to be some setup issue as I can not run code provided in mex example folder of matlb. ...

6 years ago | 5272 views

Posted

Mex File: Can not find some C header.

Hi, I am trying to compile some mex file written in C. But, it can not find some header in C. mex_tsnnls.c mex_tsnnls.c(19) :...

6 years ago | 5272 views

Posted

Matlab Spase matrix format.

Hi, I am trying to use a lsqnonneg solver written in C which is supposed to be much faster than matlab lsqnonneg for large prob...

6 years ago | 847 views

Posted

Matlab Spase matrix format.

Hi, I am trying to use a lsqnonneg solver written in C which is supposed to be much faster than matlab lsqnonneg for large prob...

6 years ago | 1048 views

Posted

Matlab Spase matrix format.

Hi, I am trying to use a lsqnonneg solver written in C which is supposed to be much faster than matlab lsqnonneg for large prob...

6 years ago | 3574 views

Responded

Re: HELP: Large Block Diagonal Matrix

Any suggestion will be appreciated..

6 years ago | 1414 views

Posted

HELP: Large Block Diagonal Matrix

I am solving an ill-defined linear equation A_Spatial_Comp * x2_1D_SimultReg = y_exp_1D_Spatial Under constraint: Where x2_1D_...

6 years ago | 1414 views

Posted

Sparse matrix and ill defined linear equation

I am solving an ill-defined linear equation A_Spatial_Comp * x2_1D_SimultReg = y_exp_1D_Spatial Under constraint: Where x2_1D_S...

6 years ago | 810 views

Responded

Re: Need help desperately: RESNORM in lsqlin lsqnonneg

I am sorry. My previous report about lsqnonneg and lsqlin returning similar result with simulated data with Gaussian error was ...

6 years ago | 5035 views

Responded

Re: Need help desperately: RESNORM in lsqlin lsqnonneg

It seems you are right. With noise included, lsqnonneg and lsqlin has similar performance. So, I may be able to use lsqlin. How...

6 years ago | 5035 views

Posted

randn: How to use seed

Hi, I am simulating normal random noise and since I am debugging my code, I want same random noise for various run. I could not...

6 years ago | 2884 views

Responded

Re: Need help desperately: RESNORM in lsqlin lsqnonneg

Bruno Luong" <b.luong@fogale.findmycountry> wrote in message Hi, I really appreciate you helping me out. lsqnonneg can handl...

6 years ago | 5035 views

Responded

Re: Need help desperately: RESNORM in lsqlin lsqnonneg

You are quite close, it's T2-relaxometry in MRI. Seems like you may be able to guid me in right direction. I intend to SOLVE fo...

6 years ago | 5035 views

Responded

Re: Need help desperately: RESNORM in lsqlin lsqnonneg

Any help would be appreciated...

6 years ago | 5035 views