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Incorporating Procrustes to PCA

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Curious Mind
Curious Mind on 25 Sep 2017
Commented: Walter Roberson on 26 Sep 2017
Hi:
So I have a PCA matlab GUI. It can perform Jackknifing for displaying a training and prediction cloud plot of the data. The plot doesn't look good because it doesnt perform the rotation well. I want to add procrustes code to it to make it work but i'm finding it difficult in getting around it. The procrustes code is
[d, Z, transform] = procrustes(tdata,tdata)
Below is the code i want to add procrustes to:
colcode_temp = colcode;
if jackState == 2 %training cloud mode
for i = 1:size(tdata,1)
for j = 1:size(jknife,1)
plotMe(size(Xmean,1)+size(jknife,1)*(i-1)+j,1) = jknife(j,i,1);
plotMe(size(Xmean,1)+size(jknife,1)*(i-1)+j,2) = jknife(j,i,2);
colcode_temp(size(Xmean,1)+size(jknife,1)*(i-1)+j,:)=0.7; %turn all cloud points gray
end
end

  3 Comments

Walter Roberson
Walter Roberson on 25 Sep 2017
What is the question being asked?
Curious Mind
Curious Mind on 26 Sep 2017
@Walter Roberson I wanna know how to add the Procrustes code. Anytime I add it it doesn't seem to effect the results I want. The Procrustes code is supposed to conform tdata to itself and give Z which is a transformed form of tdata and then plot tdata agains the Z. I want a situation where when I click tcloud button in my gui it will excecute the Procrustes part as well
Walter Roberson
Walter Roberson on 26 Sep 2017
If you
[d, Z] = procrustes(tdata,tdata)
you would get back a linear transform -- that is, Z is always going to equal tdata in that case.
You should be using procrustes with two different sets of data.

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