[GRASS-user] xganim & underlying data?

GRASS GRASS user
1

In xganim, is it possible to use an underlying raster such as a DEM with an elevation colormap or vector contours?

Thanks,
Mark

2

M S wrote:

In xganim, is it possible to use an underlying raster such as a DEM with an
elevation colormap or vector contours?

Each frame has to be a GRASS raster map. If you want to use anything
else, you have to convert it.

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

3

Thanks for the reply.

Any suggestions on how to convert/integrate an r.lake output (the blue color map is very nice) with a DEM “elevation” colormap?

Mark

On 8/7/07, Glynn Clements <glynn@gclements.plus.com> wrote:

M S wrote:

In xganim, is it possible to use an underlying raster such as a DEM with an
elevation colormap or vector contours?

Each frame has to be a GRASS raster map. If you want to use anything
else, you have to convert it.

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

4

Mark,

Maris Nartiss did some NVIZ animations, get from:
http://mpa.itc.it/markus/grass61/demos/rlake/

Maybe that's what you are looking for,

Marks

M S wrote:

Thanks for the reply.

Any suggestions on how to convert/integrate an r.lake output (the blue
color
map is very nice) with a DEM "elevation" colormap?

Mark

On 8/7/07, Glynn Clements <glynn@gclements.plus.com> wrote:

M S wrote:

> In xganim, is it possible to use an underlying raster such as a DEM
with
an
> elevation colormap or vector contours?

Each frame has to be a GRASS raster map. If you want to use anything
else, you have to convert it.

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

--
View this message in context: http://www.nabble.com/xganim---underlying-data--tf4231698.html#a12042088
Sent from the Grass - Users mailing list archive at Nabble.com.

5

Thanks! that is similar to what I am currently trying to do, but also fits another application of GIS that I need to eventually get to.

that link is truly an incredible application of GIS. that is a very powerful illustration. It seems that I need to look into NVIZ. That may also explain the use of negative depth values, which i didnt understand in the raster data model.

On 8/7/07, Markus Neteler <neteler@itc.it> wrote:

Mark,

Maris Nartiss did some NVIZ animations, get from:
http://mpa.itc.it/markus/grass61/demos/rlake/

Maybe that’s what you are looking for,

Marks

M S wrote:

Thanks for the reply.

Any suggestions on how to convert/integrate an r.lake output (the blue
color
map is very nice) with a DEM “elevation” colormap?

Mark

On 8/7/07, Glynn Clements <glynn@gclements.plus.com> wrote:

M S wrote:

In xganim, is it possible to use an underlying raster such as a DEM
with
an
elevation colormap or vector contours?

Each frame has to be a GRASS raster map. If you want to use anything
else, you have to convert it.

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

–
View this message in context: http://www.nabble.com/xganim—underlying-data–tf4231698.html#a12042088
Sent from the Grass - Users mailing list archive at Nabble.com.

grassuser mailing list
grassuser@grass.itc.it
http://grass.itc.it/mailman/listinfo/grassuser

6

M S wrote:

Any suggestions on how to convert/integrate an r.lake output (the blue color
map is very nice) with a DEM "elevation" colormap?

I'm not entirely sure what you're asking. The output from r.lake is a
raster map, so that can be used as input to xganim.

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

7

if xganim only displays/animates a series of rasters, what I am after is having underlying data of the DEM with the lake output on top of that (like how it can be displayed in the “map display” - DEM background with lake output on top of that).

Basically I need the DEM (elevation colormap) with the lake on top of that animated to show how the containment area fills with water, rather than just an animation of the water building up.

Mark

On 8/8/07, Glynn Clements <glynn@gclements.plus.com> wrote:

M S wrote:

Any suggestions on how to convert/integrate an r.lake output (the blue color
map is very nice) with a DEM “elevation” colormap?

I’m not entirely sure what you’re asking. The output from r.lake is a
raster map, so that can be used as input to xganim.

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

8

M S wrote:

> > Any suggestions on how to convert/integrate an r.lake output (the blue color
> > map is very nice) with a DEM "elevation" colormap?
>
> I'm not entirely sure what you're asking. The output from r.lake is a
> raster map, so that can be used as input to xganim.

if xganim only displays/animates a series of rasters, what I am after is
having underlying data of the DEM with the lake output on top of that (like
how it can be displayed in the "map display" - DEM background with lake
output on top of that).

Basically I need the DEM (elevation colormap) with the lake on top of that
animated to show how the containment area fills with water, rather than just
an animation of the water building up.

Merge each lake map with the DEM using r.patch. Provided that the maps
use distinct categories, the colours should be set up correctly.

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