Info

此问题已关闭。 请重新打开它进行编辑或回答。

hi I'm using a code along with its function but when I run the code I got error related to the function may someone help me

1 次查看（过去 30 天）
Rui Mauaie
Rui Mauaie 2018-11-20
关闭： MATLAB Answer Bot 2021-8-20
from my code
[EVC,LATENT] = KPCA(X,options);
Ktest = constructKernel(X,X,options);
TKtest = constructKernel(XT,X,options);
from the function
if isfield(options,'Kernel') && options.Kernel
K = data;
else
K = constructKernel(data,[],options);
end
clear data;
but when I run the code I got this
Error in KPCA (line 68)
K = constructKernel(X,options);
Error in myfunction_kernel_pca_kde (line 25)
[EVC,LATENT] = KPCA(X,options);
  11 个评论
显示 9更早的评论
Stephen23
Stephen23 2018-11-20
编辑：Stephen23 2018-11-20
"so the constructKernel is a part of the function which has relation with my code "
But you did not define constructKernel anywhere in your code. If you do not define it, it does not exist. If it does not exist, you cannot use it. Trying to use it will throw an error.
Here I define a variable X:
X = 3;
Now I can use it:
sin(X)
If I do not define a variable before I use it, this will throw an error:
sin(Y) % do you expect this to work, even though Y is not defined?
If you expect constructKernel to be a function, then where is this function defined? I suspect that you might need to download it, e.g. from FEX:
https://www.mathworks.com/matlabcentral/fileexchange/?term=constructKernel

此问题已关闭。

回答（0 个）

此问题已关闭。

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by