NITRC nonfractal Forum: help

Function or variable 'dwtj' is not recognized.

雨绮罗时 — Mon, 02 Mar 2026 8:37:44 GMT

After importing the wmtsa-matlab-0.2.6 and nonfractal_1.4 toolkits in MATLAB R2022b, I ran the following code:
"
X = rand(100); 
[H, nfcon, fcon] = bfn_mfin_ml(X);
"
 and encountered an error during testing:
>> test Function or variable 'dwtj' is not recognized.
Error in dwt (line 199)     [W_j, Vout] = dwtj(Vin, h, g);
Error in bfn_mfin_ml (line 89)         x_dwt = dwt(X(:,1), params.filter, 'conservative', params.boundary);
Error in test (line 2) [H, nfcon, fcon] = bfn_mfin_ml(X);

RE: unable to compile WMTSA

Wonsang You — Tue, 08 Aug 2017 20:57:22 GMT

Hello Andras,

Thank you for your interest in the MATLAB toolbox for computing fractal/nonfractal connectivity. Please find the attached for the precompiled version of WMTSA for Windows 64.
If you have any technical problem, please do not hesitate to contact me. I am willing to give you my assistance in using the toolbox.

Best Regards,
Wonsang

unable to compile WMTSA

Andras Jakab — Tue, 20 Jun 2017 10:37:05 GMT

Dear Wonsang

Thanks for the tool.
I am unable to compile the .c files of the wmtsa tool, which is required to run the toolkit. I tried to install many compilers, but my Matlab version does not seem to recognize them.
Is there a way to avoid the compilation of the wmtsa, e.g. is there a windows 7/8/10 compiled version of it or can one try using a pre-compiled binary of the specific command which the fractal toolbox uses?

Regards,
Andras Jakab

Welcome to Help

Wonsang You — Wed, 07 Jun 2017 14:54:37 GMT

Welcome to Help