清空筛选条件
清空筛选条件

Make all values of array Nan except for specified locations

5 次查看（过去 30 天）
Jordan Coombs
Jordan Coombs 2020-12-2
评论： Jordan Coombs 2020-12-2
I have a 2d matrix 2600x7200 and i have the locations in this matrix that i need to extract. There are 19602 of these locations.
I need a way to either make every location other than the 19602 become Nan or a way to extract these specific locations to another array of zeros.
Any help on this topic would be much appreciated

请先登录，再回答此问题。

采纳的回答

Fangjun Jiang
Fangjun Jiang 2020-12-2
%%
a=magic(5);
RowPos=[1,3,5];
ColPos=[2,4,5];
ind=sub2ind(size(a),RowPos,ColPos);
b=nan(size(a));
b(ind)=a(ind);

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by