Why do I get this error: Improper index matrix reference.

Question

Mohammad 2014-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/112504-why-do-i-get-this-error-improper-index-matrix-reference

评论： Mohammad 2014-1-15

here is my code. I don't understand why I get this error! I want to get some files( or folders) from user, do some changes to each of them, and then save it with the same name but in .png format. the problem is with the line 4 it says (name=figfiles(i),name).

function modifier
figfiles=uigetfile('*.fig','multiselect','on');
a=input('please enter [width(x),aspect ratio(x/y),resolution]');
for i=1:length(figfiles)
  name=figfiles(i).name;
  h=hgload(name);
  set(gcf,'paperunits','centimeters');
  set(gcf,'paperposition',[.25 .25 a(1) a(1)*(1/a(2))]);
  set(gca,'fontsize',11);
  set(findall(gcf,'type','text'),'fontsize',11);
  new_name=strrep(name,'.fig','.png');
  saveas(h,new_name);
end
end

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Answer 1

Walter Roberson 2014-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/112504-why-do-i-get-this-error-improper-index-matrix-reference#answer_120989

uigetfile() with multiselect on returns a cell array of strings, not a structure.

uigetfile() never does an implicit dir() operation: it just returns names of files.

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Mohammad 2014-1-15

thank you, then how can the user enter more than 1 file or a folder? these files should be read and after some changes, they should again be saved in .png format.

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