How do I find my wanted values in a .txt-file?
2 次查看(过去 30 天)
显示 更早的评论
I succeeded to let Matlab read a .txt-file with two columns (let's say t and w) but now I want it to give me w(t), so for a certain value in the first column I want to know what the associated value is in the second column. Any ideas? I have been playing with ind=find(..) but couldn't make that work yet.
0 个评论
采纳的回答
Jacques
2014-3-13
3 个评论
Matt Kindig
2014-3-13
编辑:Matt Kindig
2014-3-13
I think ismember() might do the trick.
%create some sample data.
w= rand(10,1); [~, t] = sort(w);
%t values you want to match
tvals = [5; 3; 2];
[~, loc] = ismember(tvals, t); %where are tvals in t?
wvals = w(loc); %corresponding w values
Joseph Cheng
2014-3-13
if you have the txt file imported in (let's call it DATA which has size n by 2 where first column is t and the second column is the value for w associated with the t in the same row)then ind = find should work out fine. example:
DATA = [1:10]';
DATA = [DATA DATA.^2];
tindex = find(DATA(:,1) == 4); %find row with the desired value in first column
w = DATA(tindex,2) %get value to the right of the value you found for t.
更多回答(0 个)
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!