Re: [ferret_users] How to drawing rainbow color lines?

[Jian Ma <jianma@xxxxxxxxxx>]

Hi Ansley,

That's exactly what I want! You are always saving my life!

Mahalo,
Tony

On Mon, 2009-06-01 at 14:12 -0700, Ansley Manke wrote:
> Hi Jian,
> 
> Ferret has a MODE LINECOLORS which lets us set any number of line 
> colors, but they must be set individually; they do not just take on a 
> palette of colors. Colors are set via PPL COLOR as always;  PPL 
> COLOR,ipen,R,G,B  where R,G,B are red,green,blue take on values 0 to 100.
> 
> Try this;
> 
> set mode linecolors:12
> 
> ppl color,7,100,50,0   ! orange
> ppl color,8,0,55,0     ! dark green
> ppl color,9,60,0,100   ! purple
> ppl color,10,100,60,70 ! pink
> ppl color,11,80,70,60  ! tan
> ppl color,12,100,75,0  ! yellow
> plot/thick/line/i=1:100 \
>  cos(i/20), cos(i/24), cos(i/28), cos(i/32), \
>  cos(i/36), cos(i/40), cos(i/44), cos(i/48), \
>  cos(i/52), cos(i/56), cos(i/60), cos(i/64)
> 
> CANCEL MODE LINECOLORS  ! sets the number back to the default of 6
> SET WINDOW/NEW          ! the CANCEL MODE doesn't take effect until a 
> new window is started.
> 
> This has remained undocumented because until recently it was not working 
> correctly in all modes of Ferret (batch mode  -gif mode, and so on.)  
> We'll get it into the documentation shortly. Note that choosing to set 
> extra colors for lines takes away from the number of colors available 
> for color-filled plots using palettes.
> 
> Making scripts to assign sets of colors would be pretty straitforward.
> 
> Ansley
> 
> Ansley
> 
> Jian Ma wrote:
> > Dear All,
> >
> > I am thinking of drawing rainbow color lines as default in GrADS. It is
> > a useful capability but Ferret could only draw 6+white color lines with
> > 3 thickness. What a pity!
> >
> > Is there any method to draw any color line like we easily do in shade?
> > Or will new versions of Ferret include that function?
> >
> > Many thanks,
> > Tony
> >
> >