Re: [ferret_users] vector representation

["William S. Kessler" <william.s.kessler@xxxxxxxx>]

On 20 Apr 2011, at 1:46 AM, Marco van Hulten wrote:

> William S. Kessler schreef, Op 04/18/2011 07:43 PM:
> > First, for postscript/pdf output, it is usually better to thicken the
> > vectors (or any lines) in the plot commands:
> >
> > vector/line=7 ucomp,vcomp ! or /line=13
> > [...]
>
> The thickening indeed works for vector arrows, but not for the text.

You can do the same for text by specifying the pen number:

label,x,y,justify,angle,charsize,@c007My label text

The syntax @cNNN specifies pen numbers in the same way as the line  
number. You can change pen color or thickness multiple times in a label.

Further, this makes possible "The most useful Ferret command of the  
them all": The erasing pen, number 19.

Suppose you make a mistake in a label (typo, whatever). Simply redo  
the label with pen @c019: Et voila! it is erased!

You might also look at the manual, Chapter 6 Section 5.1.2. PPLUS text  
and line color commands, for more control of pen and line changes.

BK