comp.lang.idl-pvwave archive - RDF feed
type: channel
description: Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
items: Re: Colour maps ... (BYTE_SCALE)

Re: Colour maps ... (BYTE_SCALE)
type: item
description: David Foster wrote: > > > I wrote BYTE_SCALE() because I wanted to be able to specify a minimum > value for scaling as well as maximum. If this is the only reason for a new routine BYTE_SCALE: why don't you call im = bytscl(data, top=cmax-cmin)+cmin That's what I do when I need a minimum value. Just 1/2 cent, Regards, Martin. -- ------------------------------------------------------------ ------- Dr. Martin Schultz Department for Engineering&Applied Sciences, Harvard University 109 Pierce Hall, 29 Oxford St., Cambridge, MA-02138, USA phone: (617)-496-8318 fax : (617)-495-4551 e-mail: mgs@io.harvard.edu Internet-homepage: http://www-as.harvard.edu/people/staff/mgs/ ------------------------------------------------------------ -------
creator: Martin Schultz
date: 1999-03-15T08:00:00-00:00

Re: Colour maps ... (BYTE_SCALE)
type: item
description: Martin Schultz wrote: > > David Foster wrote: >> > >> >> I wrote BYTE_SCALE() because I wanted to be able to specify a minimum >> value for scaling as well as maximum. > > If this is the only reason for a new routine BYTE_SCALE: why don't you > call > > im = bytscl(data, top=cmax-cmin)+cmin > > That's what I do when I need a minimum value. > > Just 1/2 cent, > Regards, > Martin. Martin - Well, that's worth more than 1/2 cents. Basically, BYTE_SCALE() was about my second or third routine that I ever wrote in IDL, back in 1994, before I was even aware that BYTSCL() even *had* any keywords! I wrote BYTE_SCALE() and never gave this another thought. And of course your method is even faster too. Really pisses me off! :-) Thanks Martin. Dave -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~ David S. Foster Univ. of California, San Diego Programmer/Analyst Brain Image Analysis Laboratory foster@bial1.ucsd.edu Department of Psychiatry (619) 622-5892 8950 Via La Jolla Drive, Suite 2240 La Jolla, CA 92037 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
creator: David Foster
date: 1999-03-22T08:00:00-00:00