[Freegis-list] libral & co. at 0.40

Ari Jolma ari.jolma at tkk.fi
Thu Oct 13 21:50:20 CEST 2005


I've made a 0.40 release from libral, Geo::Raster, Geo::Vector, and 
Gtk::Ex::Geo. In this release I've removed some old stuff (PGPLOT, 
Geo::Shapelib) and am building more on GDAL/OGR and GTK+. All of the 
stuff is currently only at  http://sourceforge.net/projects/libral 
(there's cvs too)

Libral & co. is experimental but useful tool, featuring (the good news):

- fast raster algebra for simple in-memory rasters, which may be clipped 
from GDAL rasters
- rasterization of OGR vector data onto rasters
- visualization of a stack of rasters and vector layers on a GDK pixbuf
- easy to use raster algebra (rasters are Perl variables and operations 
are overloaded)
- a scrollable window widget, which contains geospatial data
- a simple example of a GUI application for looking at geospatial data 
with simultaneous CLI as an text-edit box with history

the bad news:

- libral is C, other parts are Perl, no swig, probably very hard to 
compile on a non-linux, not very stable APIs, partly very complex, many 
missing features, ...


Prof. Ari Jolma
Kartografia ja Geoinformatiikka / Cartography and Geoinformatics
Teknillinen Korkeakoulu / Helsinki University of Technology
POBox 1200, 02015 TKK, Finland
Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma

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