GRASS Location Wizard

From GRASS-Wiki
Revision as of 08:03, 22 September 2006 by Neteler (talk | contribs) (new ideas)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Development of a graphical Wizard to easily create locations

Background

It is a long standing problem for newcomers that locations can be only created in an ASCII based interface.

Idea

Write a graphical Wizard to easily create locations which leads the user through a dialog of:

  • directory of GRASS database (option to create new directory if needed)
  • name of location (avoid white spaces in name)
  • name of mapset (default: PERMANENT)
  • query for (non)projection:
    • xy unreferenced data: rows, cols, xmin, xmax, ymin, ymax, default raster resolution
    • lat/long: ellipsoid + geodetic datum (from list or EPSG code), W, N, E, S, default raster resolution
    • UTM: ellipsoid + geodetic datum (from list or EPSG code), W, N, E, S, default raster resolution
    • Other projections: ellipsoid + geodetic datum + lase easting/northing etc (from list or EPSG code), W, N, E, S, default raster resolution

Material

(please use 6.3-CVS-HEAD)

  • the current GUI startup is in 'lib/init/gis_set.tcl'
  • the EPSG file is browsable through 'lib/init/epsg_option.tcl[.in]'
  • the needed parameters for each projection are defined in 'lib/gis/geo_init.c' (the ASCII location dialog follows this file to query the user)
  • geodetic datums are here: 'lib/gis/datum*'

Python: a new SWIG based interface to GRASS' C functionality is in 'swig/python/'

Questions

  • write in TclTk (maybe horrible) or Python (nicer, but extra dependency)?
Retrieved from "https://grasswiki.osgeo.org/w/index.php?title=GRASS_Location_Wizard&oldid=2563"