How to run the same script but for different datafiles consecutively

So I have the following script:

clc;
clear;

LM = xlsread('LagrangeMultiplier.xlsx','LM');
CM = xlsread('LagrangeMultiplier.xlsx','CM');
DT = xlsread('LagrangeMultiplier.xlsx','DT');

for i = 1:size(LM,2)
    JPD(i,:) = exp(-1-sum(LM(:,i)))*mvncdf(DT, Inf*ones(size(DT,1),1),0,CM);
end

Basically I have datafiles named:

LagrangeMultiplier1.xlsx
LagrangeMultiplier2.xlsx
LagrangeMultiplier3.xlsx

and so on until LagrangeMultiplier100.xlsx

Currently I'm running this script manually for each file, ie, I have LagrangeMultiplier1.xlsx as the name in the script, then I copy the values from the JPD workspace into excel, then put LagrangeMultiplier2.xlsx as the datafile name and so on. How can I automate this so that MATLAB automatically runs the script for all 100 datafiles and stores all 100 arrays for JPD into the workspace?

Thanks

Answer 1

[Geert]

@ Azzi: It is indeed not recommended to create severable variables by the

eval([ 'JPD',num2str(ii),' = JPD;'])

command. I thought Simon wanted to do it anyway, so hence I delivered ;)

@ Simon: From your screenshot it looks like your data is one-dimensional. You can hence change the code as follows to obtain what you want:

nb_files = 100;

% preallocate space for JPD
LM = xlsread('LagrangeMultiplier1.xlsx','LM');
JPD = zeros(length(LM),nb_files);

% read in all the files and store them as columns in JPD variable
for kk=1:nb_files
  file=sprintf('LagrangeMultiplier%d.xlsx',kk);
  LM = xlsread(file,'LM');
  CM = xlsread(file,'CM');
  DT = xlsread(file,'DT');
  for ii = 1:length(LM)
      JPD(ii,kk) = exp(-1-sum(LM(:,ii)))*mvncdf(DT, Inf*ones(size(DT,1),1),0,CM);
  end
end

[sittmo]

Perfect, just what I was looking for, thanks Geert!

Answer 2

[Azzi Abdelmalek]

for k=1:100
  file=sprintf('LagrangeMultiplier%d.xlsx',k);
  LM = xlsread(file,'LM');
  CM = xlsread(file,'CM');
  DT = xlsread(file,'DT');
  for i = 1:size(LM,2)
      JPD(i,:) = exp(-1-sum(LM(:,i)))*mvncdf(DT, Inf*ones(size(DT,1),1),0,CM);
  end
  out{k}=JPD
end

[Azzi Abdelmalek]

Your JPD are saved in the cell array out

out{1} corresponds to JPD1
out{2} corresponds to JPD2
and so on

It'snot recommended to create several variables JPD1, JPD2,... Look at the FAQ

[Ilham Hardy]

change

 out{k}=JPD

into

 JPDall{k}=JPD

to accomodates your need..

[sittmo]

Thanks, however it still doesn't do what I intended, the result I get is shown in this screenshot: http://imageshack.us/photo/my-images/832/umzs.jpg/

However as you can see, I need to click on JPDall{1,1} to see the 1348x1 column of values. Since I want to copy each cell of values into excel, I would need to open each of the 9 JPDall cells individually and copy each into excel, that would take quite a long time when I increase it to 100 cells. Is there a way to output all JPDall cells into one variable, so that I have 1348x9 matrix of values so I can copy it all at once into excel.

Answer 3

[Geert]

The following code will save your JPD variable for LagrangeMultiplier1.xlsx as JPD1 in the workspace, the JPD variable for LagrangeMultiplier2.xlsx as JPD2, and so on...

clc;
clear;

nb_files = 100;
for ii = 1:nb_files
    filename = ['LagrangeMultiplier',num2str(ii),'.xlsx'];
    LM = xlsread(filename,'LM');
    CM = xlsread(filename,'CM');
    DT = xlsread(filename,'DT');

      JPD = [];
      for jj = 1:size(LM,2)
          JPD(jj,:) = exp(-1-sum(LM(:,jj)))*mvncdf(DT, Inf*ones(size(DT,1),1),0,CM);
      end

      eval([ 'JPD',num2str(ii),' = JPD;'])
  end

[sittmo]

Thanks for that, however how can I have the JPD variable for all LagrangeMultiplier saved in one workspace? Ie, JPD1, JPD2... are all in a single workspace rather than separate?

[Geert]

Simon, I don't think I entirely get your question?

With the above code, JPD1, JPD2,... are all saved to your current workspace.

Can you try to explain more accurately what you want?

[Ilham Hardy]

I think what he meant is just like Azzi's answer.. by putting it in one cell.

[sittmo]

What I mean is, have JPD1, JPD2... all within one variable called JPDall or something, because currently I have to open JPD1 to see the values in JPD1, then open JPD2 to see the values in JPD2... what I was hoping is to have all those values under one variable JPDall so that when I open JPDall I see the values for all JPD1, JPD2 ...