Re: [Bug-gsl] Bug when using gsl-histogram !

[Patrick Alken]

Yes this is a known issue with the command line arguments. As a 
workaround you can try:

gsl-randist 0 10000 cauchy 30 | sort -g | gsl-histogram -- -1e6 180000 1000


with an extra "--" inserted after gsl-histogram

On 02/19/2016 04:52 AM, Majalee Aaditya (ಮಜಲೀ ಆದಿತ್ಯ) wrote:
> Dear GSL Developers,
>
> Version of GSL :
> 2.1 (Stable version) downloaded from ftp://ftp.gnu.org/gnu/gsl
>
> Hardware & Operating System :
> Intel Core i5, 3.2 GHz
> Ubuntu 12.04.3 LTS
>
> Compiler used, including version number
> gcc, version 4.6 used to compile the GSL source code
>
> Description of the bug behaviour :
>
> Was trying out the gsl-randist using the given example in the GSL
> documentation
>
> $ gsl-randist 0 10000 cauchy 30 | sort -g | gsl-histogram -1e6 180000 1000
>
> This gives an error :
>
> gsl-histogram : invalid option -- '1'
> Usage : gsl-histogram [-u] xmin xmax [n]
> Computes a histogram of the data on stdin using n bins from xmin to xmax.
> If n is unspecified then bins of integer width are used.
> If -u is given, histogram is normalized so that sum of all bins is unity.
>
> BUG:
> The bug seems to be that the gsl-histogram is unable to take negative
> values to "xmin" and is therefore thinking that "-1" from -1e6 is an option
> and hence printing out the error. The same error is not given by GSL 1.15
> where the -u option doesn't seem to be there.
>
> *--*
> *Thanks & Regards,*
> *Aaditya Majalee*