How to fill a preallocated matrix with function output?
5 次查看(过去 30 天)
显示 更早的评论
Hi there.
I've preallocated a zeros(10,4) matrix. I'm trying to store the result or "fill" each row with the output of another function (that I didn't write). The output of the function is a 1x4 array (i.e. [1 2 3 4]). I effectively want to replace each row with "ans" but I know that's just not cool.
I assume this is done by concatenation... However, the best I can do is add to the array... but there's still the 10x4 zeros below it. Is there a way to do it with indices/for loop? I'm up for whatever's easiest.
example:
A = zeros(10,4) and my 1x4 output = [1 2 3 4]
How would I replace A's first row with [1 2 3 4] without just "adding" to it?
Thanks!
0 个评论
采纳的回答
Roger Stafford
2014-6-29
编辑:Roger Stafford
2014-6-29
A(r,:) = [1 2 3 4];
or
A(r,:) = 1x4 output of function
These place the 1x4 array in the r-th row.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!