[GRASS-user] using v.digit with translucent background

GRASS GRASS user
1

hello users!

i want to use v.digit with two overlayed raster maps, both of which cover the entire area i’m working, so i need the raster “on top” be translucent to some extent (say, %50 opacity)

is there a way to do that with the bgcmd argument of v.digit?

thank you all,

Juan

2

On Thu, 2008-07-31 at 14:45 -0300, Juan Manuel Barreneche wrote:

hello users!

i want to use v.digit with two overlayed raster maps, both of which
cover the entire area i'm working, so i need the raster "on top" be
translucent to some extent (say, %50 opacity)

is there a way to do that with the bgcmd argument of v.digit?

thank you all,

Juan

I am not aware of how something like this could be done :frowning:

Better use QGIS for this task.

Nikos

3

Hi,

2008/7/31 Juan Manuel Barreneche <jumanbar@gmail.com>:

i want to use v.digit with two overlayed raster maps, both of which cover
the entire area i'm working, so i need the raster "on top" be translucent to
some extent (say, %50 opacity)

is there a way to do that with the bgcmd argument of v.digit?

I guess not possible in Tcl/Tk-based v.vdigit, if you use grass64 try wxGUI, see

http://grass.osgeo.org/wiki/Image:WxGUI-vdigit-bg.png

Martin

--
Martin Landa <landa.martin gmail.com> * http://gama.fsv.cvut.cz/~landa *

4

On Thu, Jul 31, 2008 at 08:05:56PM +0200, we recorded a bogon-computron collision of the <landa.martin@gmail.com> flavor, containing:

Hi,

2008/7/31 Juan Manuel Barreneche <jumanbar@gmail.com>:
> i want to use v.digit with two overlayed raster maps, both of which cover
> the entire area i'm working, so i need the raster "on top" be translucent to
> some extent (say, %50 opacity)
>
> is there a way to do that with the bgcmd argument of v.digit?

I guess not possible in Tcl/Tk-based v.vdigit, if you use grass64 try wxGUI, see

I'd not say "not possible", but rather "a pain." One could do it by making
a blended raster with r.blend prior to entering v.digit, then using the d.rast
command on that for v.digit.

Or at least, that's what would spring to my mind as the work-around.

--
Tom Russo KM5VY SAR502 DM64ux http://www.swcp.com/~russo/
Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM
"Argue for your limitations and sure enough, they're yours." -- R. Bach

5

Juan Manuel Barreneche wrote:

i want to use v.digit with two overlayed raster maps, both of which cover
the entire area i'm working, so i need the raster "on top" be translucent to
some extent (say, %50 opacity)

is there a way to do that with the bgcmd argument of v.digit?

No.

However, you can use r.blend to produce a blend between two maps, then
use the blended map as the background.

--
Glynn Clements <glynn@gclements.plus.com>

6

Juan Manuel Barreneche:

i want to use v.digit with two overlayed raster maps, both of which
cover the entire area i'm working, so i need the raster "on top" be
translucent to some extent (say, %50 opacity)

is there a way to do that with the bgcmd argument of v.digit?

try using d.shademap (or d.his) as the bgcmd.
http://grass.osgeo.org/grass64/manuals/html64_user/d.shadedmap.html

maybe it does the trick.

Hamish