[GRASS-dev] visualize GRASS vector/raster on web
Mohammed Rashad
mohammedrashadkm at gmail.com
Tue Nov 29 09:01:18 EST 2011
how to visualize vector/raster from directly from GRASS database?
I am building webGRASS. for that I linked GRASS GIS all libraries to my
application without any wrappers..
Now I can execute any grass command online. But for rendering I use
OpenLayers. I want to change OpenLayers and use a WPaintWidget to draw
raster and vector data
I can make this happen in this way
[1] call d.vect which will call v.out.ogr and create a gml file --> display
gml on OpenLayers.Map
Now I want to reduce the overhead by spawning different process like d.vect
--> v.out.ogr --> gml -->openlayers
I need rendering this way
[2] Read GRASS data directly from database (points/line/polygon for vector
and image pixel values from GRASS raster format
so the chain will be
GRASS Raster data --> (image pixel values) MyNewMapCanvas
GRASS Vector data --->(points/lines/polygons) MyNewMapCanvas
The reason behind my need is that on web it will increase speed and
efficiency when we read data from GRASS database directly
All I want to do GRASS GIS core language C/C++ to make a web application
it is possible because I am linking my website with required grass
libraries (libgrass_*)
Any help will be greatly appreciated..
--
Regards,
Mohammed Rashad K M
M.S. (By Research) student
Lab for Spatial Informatics
Department of CSE
International Institute of Information Technology
Hyderabad, India
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