st: MATA: sort descending

["Roberta Pastorino" <roberta.pastorino@unipv.it>]

I have a matrix like this:

a=
3 6 8 2
2 3 5 1

I woluld like :
b=
8 6 3 2
5 3 2 1

I have to sort the first row of a matrix in a descending order in MATA.
Is possible?

Thanks
R
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