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gsort(1) Scilab Function gsort(1)
NAME
gsort - decreasing order sorting
CALLING SEQUENCE
[s, [k]]=gsort(v )
[s, [k]]=gsort(v,flag1)
[s, [k]]=gsort(v,flag1,flag2)
PARAMETERS
v,s : real vector/matrix; character string vector/matrix
flag1
: a string 'r', 'c','g','lr' and 'lc'.
flag2
: a string 'i' for increasing and 'd' for decreasing order. k : vec-
tor or matrix of integers
DESCRIPTION
gsort is similar to sort with additional properties. The third argument can
be used to chose between increasing or decreasing order. The second argu-
ment can be used for lexical orders.
[s,k]=gsort(a,'g') and [s,k]=gsort(a,'g','d') are the same as
[s,k]=gsort(a). They perform a sort of the entries of matrix a, a being
seen as the stacked vector a(:) (columnwise). [s,k]=gsort(a,'g','i') per-
forms the same operation but in increasing order.
[s,k]=gsort(a,'lr') sort the rows of the matrix int(a) ( if a is a real
matrix) or a (if a is a character string matrix) in lexical decreasing
order. s is obtained by a permutation of the rows of matrix int(a) (or a)
given by the column vector k) in such a way that the rows of s verify
s(i,:) > s(j,:) if i<j. [s,k]=gsort(a,'lr','i') performs the same operation
for increasing lexical order
[s,k]=gsort(a,'lc') sort the columns of the matrix int(a) ( if a is a real
matrix) or a (if a is a character string matrix) in lexical decreasing
order. s is obtained by a permutation of the columns of matrix int(a) (or
a) given by the row vector k) in such a way that the columns of s verify
s(:,i) > s(:,j) if i<j. [s,k]=gsort(a,'lc','i') performs the same operation
for increasing lexical order
EXAMPLE
alr=[1,2,2;
1,2,1;
1,1,2;
1,1,1];
[alr1,k]=gsort(alr,'lr','i')
[alr1,k]=gsort(alr,'lc','i')
SEE ALSO
find
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