convert an array to a new
1 次查看(过去 30 天)
显示 更早的评论
I have an array M [100000*3]. I want to create a new array where the one dimension will be the 1st column of the array M, the 2nd dimension will be the second column and the values of this new array will be taken from the third column. Some values of the new array will be zero/null. how do i convert the original array to new?
0 个评论
采纳的回答
Azzi Abdelmalek
2013-10-12
c1=M(:,1)
c2=M(:,2)
n=max(c1);
m=max(c2);
idx=sub2ind([n m],c1,c2)
out=zeros(n,m);
out(idx)=M(:,3)
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!