[Help-gsl] gsl ranking of vector elements

[Stefan Bleuler]

The method proposed in the gsl documentation for calculating the ranks 
of vector elements is to use sort and then look at the indices. The 
problem is that the order for equal values is "random" and thus their 
ranks are.

I would like to assign equal non-integer ranks to equal elements.

Example:

v = [1 3 3 5]
ranks(v) = [1 2.5 2.5 4]

Is there a straight forward way to do it in gsl?

Thanks.

Stefan