How to set an upper and lower limit on a data set from a matrix
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I need to set an upper and lower limit on the numbers in a data set that belongs to a matrix.
How would I go about doing this?
2 Comments
Accepted Answer
Walter Roberson
on 3 Aug 2015
at_least = -5.1234; %for example
at_most = 308.42; %for example
new_matrix = min(max(YourMatrix, at_least), at_most);
Now new_matrix has had every value less than at_least replaced with at_least, and every value greater than at_most replaced with at_most.
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More Answers (1)
James Tursa
on 4 Aug 2015
Assuming you want to extract all the rows where the 3rd column meets your conditions:
GalList = your matrix
lower_limit = 176.71;
upper_limit = 198.71;
x = (GalList(:,3) >= lower_limit) & (GalList(:,3) <= upper_limit);
extracted_rows = GalList(x,:);
3 Comments
James Tursa
on 4 Aug 2015
Do you mean read in only those lines, or create a new file with only those lines, or what? How are you currently reading this file?
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