Re: [R] rgb and col2rgb color conversion/modification/shading

2006-08-01 Thread Paul Murrell
Hi Earl F. Glynn wrote: > <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] >> I want to get a lighter shade of a color...I have a lot of colored objects >> and >> want each one printed as a foreground against a slightly lighter >> background. >> >> I thought I could try something

Re: [R] rgb and col2rgb color conversion/modification/shading

2006-08-01 Thread Earl F. Glynn
<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] >I want to get a lighter shade of a color...I have a lot of colored objects >and > want each one printed as a foreground against a slightly lighter > background. > > I thought I could try something like changing the alpha channel by fir

Re: [R] rgb and col2rgb color conversion/modification/shading

2006-08-01 Thread Uwe Ligges
[EMAIL PROTECTED] wrote: > I want to get a lighter shade of a color...I have a lot of colored objects and > want each one printed as a foreground against a slightly lighter background. > > I thought I could try something like changing the alpha channel by first > converting it to rgb. > > But pr

[R] rgb and col2rgb color conversion/modification/shading

2006-07-31 Thread ccarey
I want to get a lighter shade of a color...I have a lot of colored objects and want each one printed as a foreground against a slightly lighter background. I thought I could try something like changing the alpha channel by first converting it to rgb. But prior to trying that, I'm stuck with how