creating a matrix from different sized arrays
显示 更早的评论
Hello,
i have some test data to analyse, the data is in arrays of varying size but the names of the arrays are all similar eg; mmXXXgX (where X are numbers relating to a specific test situation)
Basically everything is taking ages to do because i can't seam to make a matrix out of it, i also don't want to cut down any of them as the amount of data varies significantly from one to the next. i was thinking about extending them with 0s but i was worried it would mess up the results if it tried to Fourier transform them.
The latest thing i have been trying involves a matrix of their names as text strings but this doesn't seem to work either.
I have never used this forum before so please let me know if i have missed anything out.
this is the code from the last attempt (it was a bit hopeful i didn't really expect it to work):
a=['mm100g0','mm155g0','mm195g0','mm215g0','mm235g0','mm295g0'
'mm100g1','mm155g1','mm195g1','mm215g1','mm235g1','mm295g1'];
peakv=zeros(size(a));
for r=1:2
for c=1:6
peakv(r,c)=fd(a(r,c));
end
end
fd() is just a function that returns a single value (the peak voltage)
Any help would be greatly appreciated, thank you
Michael
采纳的回答
Andrei Bobrov
2012-5-15
x = [100 155 195 215 235 295];
y = 0:1;
[ii jj] = ndgrid(y,x);
a = eval(['reshape({',sprintf('mm%dg%d,',[jj(:),ii(:)]'),'},size(jj))']);
or:
a={mm100g0,mm155g0,mm195g0,mm215g0,mm235g0,mm295g0;mm100g1,mm155g1,mm195g1,mm215g1,mm235g1,mm295g1}
% example of use
peakv = cellfun(@fd,a);
更多回答（1 个）
Sean de Wolski
2012-5-15
0 个投票
This should get you started, ask us for any clarifications.
类别
在 帮助中心 和 File Exchange 中查找有关 Characters and Strings 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
