How do I pick selected values in a matrix
显示 更早的评论
I have generated the following matrix:
A =
0 0 0 0 0 2 2 2 0 0 2
0 2 0 2 0 0 0 0 0 2 0
2 2 0 2 2 0 0 2 2 2 2
2 2 0 0 0 2 2 0 2 0 2
2 2 2 0 0 2 2 0 2 0 0
2 2 2 0 2 0 0 2 2 2 0
2 2 2 2 2 2 2 2 2 2 0
2 2 2 0 2 2 2 2 0 2 2
2 0 2 0 2 2 2 2 2 0 0
2 2 2 2 2 2 2 2 0 2 2
How do I only select the zero values in the matrix?
2 个评论
the cyclist
2023-3-27
编辑：the cyclist
2023-3-27
When you say, "only select the zero values", can you be specific about what you want the output to be? Don't just rephrase it as something like, "I only want the zeros". Say exactly what the output should be.
NAA
2023-3-27
采纳的回答
You want the fraction of zeros in the array?
A = ...
[0 0 0 0 0 2 2 2 0 0 2
0 2 0 2 0 0 0 0 0 2 0
2 2 0 2 2 0 0 2 2 2 2
2 2 0 0 0 2 2 0 2 0 2
2 2 2 0 0 2 2 0 2 0 0
2 2 2 0 2 0 0 2 2 2 0
2 2 2 2 2 2 2 2 2 2 0
2 2 2 0 2 2 2 2 0 2 2
2 0 2 0 2 2 2 2 2 0 0
2 2 2 2 2 2 2 2 0 2 2];
mean(A==0,"all")
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