[GRASS-dev] [SoC Report #1] Kriging with GRASS and R: v.autokrige port to wxPython and more

GRASS GRASS developer
1

Anne,

There is a good book to get you started with wxPython by the author Robin Robin Dunn (“wxPython in Action”). Also there is a very good wxPython doc application that comes with the distribution. It is generic for wxWindows and wxPython, but they are quite close. For special wxPython features, download the wxPython “new docs” from the wxPython site and access them via your browser.

Michael

C. Michael Barton, Professor of Anthropology

Director of Graduate Studies, School of Human Evolution & Social Change

Director, Center for Social Dynamics & Complexity

Arizona State University

Phone: 480-965-6262

Fax: 480-965-7671

www: <www.public.asu.edu/~cmbarton>

On May 29, 2009, at 2:03 PM, grass-dev-request@lists.osgeo.org wrote:

From: Anne Ghisla <a.ghisla@gmail.com>

Date: May 29, 2009 10:32:02 AM GMT-07:00

To: “grass-dev@lists.osgeo.org” <grass-dev@lists.osgeo.org>

Subject: [GRASS-dev] [SoC Report #1] Kriging with GRASS and R: v.autokrige port to wxPython and more

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello all,

I’m Anne Ghisla and I’m working on integration of R kriging functions
into GRASS, porting v.autokrige [0] to wxPython and widening its pool of
functions.
Code is hosted on SVN GRASS addons repository, see the page of the
project on OSGeo wiki for details [1].

= Done =

I dedicated this week to documentation and discussion with users and
developers.

    • Documentation: I’m reading “An introduction to Applied Geostatistics”
      [2], as I need to understand the theory behind kriging functions
      provided by R. On wxPython side, wxPython wiki is the main source of
      information, together with the code of GRASS wxPython interface.
    • Community discussion: Feedback on interface design and R has been
      collected on various mailing lists, mainly in this thread [3]. Also, a
      group of Portuguese ArcGIS users is interested in giving advice and test
      the new module.

= Planned for next week =

I plan to define which functions (and consequently which R packages) are
to be included into the module. I plan to first include package automap
(a wrapper for gstat), then gstat advanced functions, then geoR (an
“ecological vicariant” of gstat), all alvailable on CRAN [4] . This will
allow R users to keep using their preferred functions, as kriging
results are implementation-dependent.
Then I’ll work on wxPython interface and get a draft as soon as
possible. The interfaces that I use as model are ArcGIS’ kriging module
and Isatis. I won’t replicate their structure, rather see what are the
provided features and create v.autokrige interface following Humane
Interface guidelines.

= Bottleneck(s) =

I’m experiencing some difficulties, mainly with wxPython, as I never
used it before, and also with kriging, for the same reason :slight_smile: but I’m
not worried nor blocked. Last year GSoC project was a bet and I
succeeded, this year it’s even harder but I can rely on some more
experience and, as always, on mentor and community support.

best regards and happy coding to everyone!

Anne