Re: [ferret_users] land_detail and thick lines

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Ryo,
Thank you for the contribution. In your example, it looks as if you've 
run land_detail asking for the thickest black pen.

We've had it in mind for a while to include the thickening operation as 
an option if not the default in gksm2ps. (For those who may not know, 
gksm2ps is the program that Fprint runs to translate metafiles to 
postscript).   I think we could incorporate this change as well.

By the way, PyFerret allows for much more control over line thickness, 
and it directly writes postscript or pdf files.

Ansley

On 4/8/2014 3:53 PM, Ryo Furue wrote:
> Ferret users,
>
> We noticed that when you use land_detail and thicken the lines in PostScript output (e.g., http://www.pmel.noaa.gov/maillists/tmap/ferret_users/fu_2006/msg00797.html), the coast lines get feather- or needle-like features (see attached).
>
> I found these needles are sharp vertices of polygons.  To fix this, you can round the corners by inserting this global setting in your PostScript file
>
>    1 setlinejoin
>
> somewhere after the comment "% begin the plot".
>
> I thought this may be done by default (by gksm2ps)
> because Ferret doesn't (seem to) output polygons
> that need sharp vertices.
>
> Regards,
>
> Ryo