Bug in Matlab/statistics toolbox or is there a typo in the plsregress example? (or something wrong with my Matlab installation?)
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Petter Stefansson
2016 年 3 月 11 日
回答済み: Petter Stefansson
2016 年 3 月 11 日
I’m having problems with getting the partial least squares regression to work properly and I suspect that there either is something wrong with my matlab installation or that there is a bug in matlab/statistics toolbox. If I type:
help plsregress
I get this example:
load spectra
[xl,yl,xs,ys,beta,pctvar,mse] = plsregress(NIR,octane,10,'CV',10);
plot(0:10,mse(2,:),'-o');
octaneFitted = [ones(size(NIR,1),1) NIR]*beta;
plot(octane,octaneFitted,'o');
but when I run these two lines exactly as in the example:
load spectra
[xl,yl,xs,ys,beta,pctvar,mse] = plsregress(NIR,octane,10,'CV',10);
I get this:
Error using horzcat
Dimensions of matrices being concatenated are not consistent.
Error in crossval
Error in plsregress>plscv (line 351)
sumsqerr = crossval(CVfun,X,Y,cvpType,cvp,'mcreps',mcreps,'options',ParOptions);
Error in plsregress (line 214)
mse = plscv(X,Y,ncomp,cvp,mcreps,ParOptions);
Could someone be kind enough to type the two lines in your matlab and see if it works for you? And if it doesn’t, is there a typo in how the example is written or is there a bug in matlab/statistics toolbox?
2 件のコメント
Steven Lord
2016 年 3 月 11 日
Which release of the toolbox are you using?
Are you executing the example from the online documentation or from the documentation included in your installation? If you're executing the online example, check if it's different than the example in your locally installed documentation.
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