problem using sortcols()
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Hi everybody, I have a matrix and I want to sort the colums based on the value of a rows. for example consider A:
A =
24 35 46 23 20 31 30 38 37
10 25 15 10 15 15 5 10 5
I want to extract the matrix B as follow:
B =
30 37 24 23 38 46 20 31 35
5 5 10 10 10 15 15 15 25
I've tried to do it with 'sortcols' order but I've faced with this error "Undefined function or variable 'sortcols'".
How could I fix it?
1 个评论
sortcols is in the Bioinformatics Toolbox. Do you have the Bioinformatics Toolbox installed and a valid license for it? Do you have a DataMatrix object (exactly as the sortcols help states that it requires)?
Your example seems to show a double matrix. Why are you trying to use sortrows on a double matrix? Did you read its help?
采纳的回答
Walter Roberson
2018-11-19
A = [ 24 35 46 23 20 31 30 38 37
10 25 15 10 15 15 5 10 5];
import bioma.data.*
DM_A = DataMatrix(A);
B = sortcols(DM_A)
2 个评论
mehdi J
2018-11-19
Walter Roberson
2018-11-19
The dodocumentation says:
"The DataMatrix constructor function is part of the microarray object package. To make it available, type the following in the MATLAB® command line:
import bioma.data.*
Otherwise, use bioma.data.DataMatrix instead of DataMatrix, in the following syntaxes."
I would suggest that if you are not doing work with the bioinformatics Toolbox that you should not be using sortcols.
更多回答（1 个）
Even though there is no sortcols function for double matrices, you could transpose A and use the sortrows function before transposing back:
A = [24 35 46 23 20 31 30 38 37;
10 25 15 10 15 15 5 10 5]
B = sortrows(A',2)'
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