save the variables whose names are always changing over different loops
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Consider the example below. The aim is , in every circulation, to generate a variable first, only a1 in the fist circulation for example,then save the generated variable into hardware, then the workspace should be cleared right before each circulation ends considering the huge size of the data. What I can do now is only to generate the desired variable in the workspace, and I am at a loss on how to save it to the hard disk automatically .
for i=1:10;
name=['a',num2str(i)];
eval([name,'=',num2str(i^2),';']);
%-------
% PLEASE help add a line or more here to save ai into hard disk
%-------
clear all
clc
end
Thanks a million
采纳的回答
Doug Eastman
2011-7-8
If you are saving each value to disk as a separate file, the only thing you need to change is the filename. You can reuse the same variable in the loop. Does the format of the file matter? If not I recommend saving as a MAT-file as shown below:
for i = 1:10
a = i^2;
save(['myfile',num2str(i)],'a');
end
5 个评论
feng
2011-7-9
Paulo Silva
2011-7-9
very very bad idea that makes me cry, first you are writing to the hard drive every iteration and second you make a file for every iteration!!
I would use the computer memory to save data from all iterations in MEMORY and after all iterations are done I would save that data to the hard drive, simple fast and reliable.
feng
2011-7-9
Paulo Silva
2011-7-9
ok with large data it starts to make some sense
feng
2011-7-9
更多回答（1 个）
Sean de Wolski
2011-7-8
2 个投票
Don't do this!!!
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