Find the Most Constant Minimum Difference in a 2D array

1 次查看(过去 30 天)
I have a 2-Dimensional Array where each column refers to a different threshold value. Each row in a given column contains difference (A-B) results between two arrays. What I need to do is find out which of these columns consistently produces the least amount of differences (in other words, A-B stays between C [min] and N[max] for the entirety of the column, but where the values of C and N are unknown).
This question accompanies this older question , however this older question is now irrelevant as the only part of the code I don't know how to figure out yet is this part.

回答(2 个)

Matt J
Matt J 2016-8-31
编辑:Matt J 2016-8-31
So you're trying to find which column has the minimum span semi-norm?
span=max(A,[],1)-min(A,[],1);
[deltaMin,loc]=min(span);

Image Analyst
Image Analyst 2016-8-31
How can C and N be unknown? I can tell you 35% of the elements in column 1 are between 5 and 10 if I know what 5 and 10 are. But if you're not going to tell me 5 and 10, then how am I supposed to know what your lower and upper range values are?
Why does C and N matter anyway? Why can't you just do
columnMeans = mean(abs(array2D), 1)
[leastDiff, colWithLeastDiff] = min(columnMeans)
to find the column that has, on average over all the rows, the least absolute difference?

类别

Help CenterFile Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

产品

Community Treasure Hunt

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

Start Hunting!

Translated by