Comments for michalisavraam.org blog

Comment on Understanding the Geoprocessor Programming Model part 1 by ropp

ropp — Thu, 15 Jul 2010 04:51:51 +0000

Great post! Looking forward to more good articles.

Comment on About me by Rossana Espinoza

Rossana Espinoza — Thu, 20 May 2010 14:17:48 +0000

Hi Michalis

Great to find your blog! I am based in the UK and am involved in a research project, called GIRAFFE, to develop a wiki to support the sharing of resources and materials amongst geographers. It has a focus on GIS, let me know if you would like to hear more, it would be great if we could be in touch and an exchange a few lines about it. All good wishes, Ros

Comment on 7 wishes for the new Geoprocessor by Thomas

Thomas — Mon, 10 May 2010 14:46:05 +0000

I’m really crossing my fingers for multi-core functionality. I do a lot of simple raster analysis, and there’s absolutely no reason for it to take as long as it does.

Comment on The Essential Python Modules for GIS by dbb

dbb — Tue, 27 Apr 2010 16:11:57 +0000

the GEOS bindings, OGR and PostGIS interfaces in *GeoDjango* are worth mentioning.. they are tied to Django, but are clear and thorough

Comment on Python and Geography: Input Output Models and Graph Theory by Ruslan

Ruslan — Tue, 27 Apr 2010 01:14:03 +0000

Hi Michalis,

I just came across your blog today from a review in GIS Development magazine. This is really a fantastic & resourceful blog. You surely have contributed a lot to the GIS community.

Regards
Ruslan

Comment on The Essential Python Modules for GIS by The Essential Python Modules for GIS « Photogrammetry and Remote Sensing

The Essential Python Modules for GIS « Photogrammetry and Remote Sensing — Mon, 26 Apr 2010 13:06:01 +0000

[...] The Essential Python Modules for GIS The Essential Python Modules for GIS | michalisavraam.org blog [...]

Comment on Manipulating Excel files using Python part 2: Writing Excel Files by Thank you.

Thank you. — Mon, 26 Apr 2010 08:33:54 +0000

Very helpful. Thank you. Just what I was looking for!

Comment on The Essential Python Modules for GIS by Sean Gillies

Sean Gillies — Sat, 24 Apr 2010 11:29:31 +0000

Once upon a time, I worked in a GIS shop, and let me tell you: there was more customer data in spreadsheets than in XML or relational databases, and apparently things haven’t changed all that much.

Comment on The Essential Python Modules for GIS by Michalis Avraam

Michalis Avraam — Fri, 23 Apr 2010 17:19:34 +0000

Kurt,

I like your suggestions. Here is why I left some of those out:

pyproj: A very good package, but GDAL compiled with Proj4 support will actually perform transformations. Granted, not for single Points, but most people transform whole files.
shapely: Indeed it offers some spatial analysis tools, bur OGR does allow the reading/writing of geometries as well. As the analysis tools are limited, I decided not to include it.
geojson: As mentioned in the post, I avoided web-based packages. This will be included in a future article though.
lxml: This is covered (to the best of my knowledge) by the xml module that comes standard with Python. Different implementations, but the possibility is there to manipulate xml files through the DOM or Minidom.
pil: GDAL can export to image formats. If you want to do image manipulation (which is quite possible), indeed a package like PIL would be nice.
pyexcelerator: xlwt and xlrd are derived from pyexcelerator and are more actively developed.
scipy: Most manipulations for GIS can be done using numpy, the base package of scipy. Indeed, scipy can add some functionality for you.
rpy2: Integration with R is important for spatial statistics. Perhaps I should include this indeed, even though I see more people using numpy to do their number crunching by hand. rpy2 is good though.

Michalis

Comment on The Essential Python Modules for GIS by Sean Gillies

Sean Gillies — Fri, 23 Apr 2010 11:12:49 +0000

Thanks for pointing out NetworkX. Very neat.