Undefined function 'libsvmread' for input arguments of type 'char'.

I get the following error when i use libsvm

Undefined function 'libsvmread' for input arguments of type 'char'.

i downloaded libsvm 3.17 and unzipped it and placed all content in my matlab path

in command prompt i used

[a,b] = libsvmread('heart-scale');

i get the above error

plz help

Answer 1

[Hossein Sangrody]

type "pathtool" in your MATLAB command window, add the path of the functions e.g. if your operating system is Windows, add "...\libsvm-3.17\windows" and then save. MATLAB can read them now. That's all.

[Astha Ameta]

Kindly elaborate your explanation. I am also facing the same issue.

[Astha Ameta]

I followed the steps mentioned by you but instead, I got a new error: ??? Invalid MEX-file 'C:\Program Files\matlab\R2010a\toolbox\libsvm-3.21\windows\libsvmread.mexw64': The specified module could not be found. Although the file is there but still this error is coming. Please advise.

[CC0058]

I also got the same problem, after adding the path I got the second error you mentioned. Did you solve this?

[Astha Ameta]

It is still unresolved.

[Akanksha Goel]

I am getting same issue what to do next?

Answer 2

[Christine Zarief]

I get this problem ,I tried a lot to solve it ,but it does not work ,could you please help me ?

Undefined function or variable 'libsvmread'.

Error in demo_libsvm_test1 (line 29) [heart_scale_label, heart_scale_inst] = libsvmread(fullfile(dirData,'heart_scale'));

Answer 3

[Walter Roberson]

libsvmread() is part of the third-party libsvm tools. See https://www.mathworks.com/matlabcentral/answers/8704-i-can-not-use-libsvm#answer_12007