Helena,
Excellent stuff. I don't suppose you could be tempted to add reference
to your material to the OSGeo Case Studies page:
http://wiki.osgeo.org/wiki/Case_Studies#GRASS
On 23/12/2009 8:20 AM, Helena Mitasova wrote:
I have numerous examples of gis tasks done side-by-side in GRASS and
ArcGIS here:
http://courses.ncsu.edu/mea582/lec/001/GIS_anal_assign/GIS_Anal_Assignall.html
The data for the examples are available as GRASS data location and
ArcGIS geodatabase
(links on top of the document)
as well as in shape and ArcGRID format (I could not get all rasters
convert correctly to GeoTIFF
at the time I was preparing the data) here
http://www.grassbook.org/data_menu3rd.php
It certainly does not cover everything (especially vector data and
database examples are very limited)
but there is plenty to show various aspects of GIS from simple display
and visualization to complex
analysis.
It would be interesting to see some of these examples done in other
systems - we tried QGIS but that ended up
using GRASS plugin too much, so other more independent software would
be more interesting.
I will be updating the material in next few months to capture the
latest developments and plan
to add another course with examples in different software packages in
fall.
I am sure there will be a lot of interest here to see how at least
some of the tasks are executed
in MapWindows of gvSIG and also extension of this material to cover
more vector / database
and image processing material.
Feel free to use the data, the examples are various modifications of
the examples from the GRASbook,
Helena
Helena Mitasova
Associate Professor
Department of Marine, Earth and Atmospheric Sciences
North Carolina State University
1125 Jordan Hall
NCSU Box 8208
Raleigh, NC 27695-8208
http://skagit.meas.ncsu.edu/~helena/
email: [email protected]
ph: 919-513-1327 (no voicemail)
fax 919 515-7802
On Dec 22, 2009, at 3:19 PM, Stefan Steiniger wrote:
Hei Dan,
thanks for the thoughts - I like them too and thats what I see too..
we need not only to bring up the highlights between FOSGIS but even
more to convince people to eventually have a look on FOSGIS by
comparing it to ESRIs desktop software, since they have set a bit the
standards (at least for teaching higher level geography GIS courses).
But two notes: I doubte that ESRI has 80% because this would mean the
utility market is not considered. And I think one talks here more
about ESRI in a gegraphical analysis perspective. While I am not sure
what the average GIS user actually does (i.e. How many do queries, do
editing, do "real" analysis?).
I like your subquestions - and allow me to add comments :)
And the three main sub-questions are:
Can I open the same files?
well.. on the c-tribe side yes thanks to Gdal/OGR? But i would
restrict to core file types (shp, dxf, mif, raster stuff)
Can I make the same maps?
uuhmmm - not yet, but...?
Can I do the same analyses?
With Sextante probably yes, now.
Can I teach the same lessons?
Ahh.. that hits a point. As we need to tell students about "this open
source stuff". I actually plan to check out the next days if I can
replace some arcgis analysis tools with sextante for a course.
So maybe we check what is taugth in the GIS core curriculum?
Something like the MS thesis about GRASS and ArcGIS that was
mentioned, but web-based and updated by the various project members.
Sounds good and its great if you would have even student resources.
I actually tried to do such comparison already in my second
publication on GIS in landscape ecology and in my last talks - my
result was: Most of the FOS desktop GIS are on the ArcView level and
a bit beyond, but we can not compete with ArcInfo (leave a side the
need for an easy map making tool - not sure how good the last QGIS
tool is). So by now I see our chance in providing "specialist" tools
for target groups that are either too small for ESRI, Pitney Bowes &
Intergraph & Co to be ever included in their official distribution or
that may be to expensive to be bought as extension for some (I
remember a friend who once needed Maplex for labeling but not the
rest of ArcGIS ArcInfo analysis features). And we would need to
highlight which whose things are.
here a link to that pub:
http://www.geo.uzh.ch/~sstein/finalpub/steiniger_geographic_information_tools_ecoinf2009.pdf
stefan
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