[GRASS5] custom icons...

[Moritz Lennert]

Hamish wrote:
>>Recently I saw a discussion/post about how to create (and draw) new
>>icons on GRASS.
>>
>>I have plans to use GRASS for ESI maps, but there is a problem: I need
>>to have ESI symbols (see link below for an example).
>>
>>http://response.restoration.noaa.gov/type_subtopic_entry.php?RECORD_KEY%28entry_subtopic_type%29=entry_id,subtopic_id,type_id&entry_id(entry_subtopic_type)=312&subtopic_id(entry_subtopic_type)=5&type_id(entry_subtopic_type)=2<http://response.restoration.noaa.gov/type_subtopic_entry.php?RECORD_KEY%28entry_subtopic_type%29=entry_id,subtopic_id,type_id&entry_id%28entry_subtopic_type%29=312&subtopic_id%28entry_subtopic_type%29=5&type_id%28entry_subtopic_type%29=2
> 
> 
> 
> as a first stop, did you ask ESI if they will just give them to you?
>   email <orr.esi at noaa.gov>
> 
> If so, be sure to find out what rights you have to use and redistribute
> them & their derivatives. If they exist as a font use d.text.freetype.
> 
> It would be really nice to have some simple parser to convert a .eps file
> to a d.graph input file, have d.graph handle .eps internally, &/or a .eps
> to grass symbol converter. (simple features only)
> 
> 
> 
>>So, this icons are a little complex for drawing. Is possible to
>>include SVG icons (or any vector /bitmap format) on GRASS? (Note: I
>>know how to do this on QGIS).
> 
> 
> 
> You could get this PDF
>  http://response.restoration.noaa.gov/book_shelf/890_Key.pdf
> 
> Convert to PostScript and try extracting the coordinates.

using pdftops and pstoedit, you can easily transform the file into 
different vector formats...

> 
> Zooming in on them looks like they started out as vectors.
> 
> In a method mentioned by Paul some time ago, you could save a zoomed
> version as a raster, load into GRASS in a XY location, run r.thin,
> r.to.vect, v.clean, and 'v.out.ascii format=standard' to get the 
> resulting lines.
> 
> -or- if you can digitize them in QGIS, do so. Load into GRASS, use
> v.transform to center them on 0,0 and scale appropriately, export lines
> with 'v.out.ascii format=standard'.
> 
> Then edit that text file to add the symbol commands around the line 
> verticies.


If you don't have to see the symbols on screen, another option would be 
to save bitmap versions of the icons as eps files and use the eps option 
of the vpoints command in ps.map.

Moritz