[OSGeo-Discuss] Call for help: GDAL and txt2shp.py

[Dane Springmeyer]

Refsvik,

Try reversing your coordinates, as the graphic looks like your output  
shapefile has had the x/y reversed. Then if you want to display the  
data against other layers not in WGS 84/EPSG 4326 you'll need to add  
a .prj file, which can be grabbed from http://spatialreference.org/ref/epsg/4326/

Dane




On Jul 3, 2008, at 12:51 AM, Kjell Are Refsvik wrote:

> Hi,
>
> I am a graduate student in Information Technology at Ostfold  
> University College - Dept. of Computer Science.
>
> Nearing the end of my thesis on the challenges and opportunities  
> related to digital photographs I would like to write some code that  
> process pictures and makes a HTML web album (with an embedded map  
> with a numbered legend on it) using open source tools.
>
> Inspired by GeoPerrys note on command-line style approach to using  
> software (http://www.perrygeo.net/wordpress/?p=105) I have been  
> looking for a basic unix toolset to process geodata.
>
> My geo-data come in the form of a pile of geo-tagged images and my  
> own maps (shapefiles), and going back to GeoPerry, I found a python  
> script:
>
> http://www.perrygeo.net/wordpress/?p=5
>
> ...that appears to do more or less what I want.
>
> I should mention that my I have little experience in programming in  
> general and that diving deep into the terminal on my Mac OS X  
> installation feels a bit daunting. Even so, I was able to upgrade my  
> Python-installation yesterday and install GDAL and all its  
> dependencies (I think) to get the script (txt2shp.py) to work.
>
> When I run the script:
> http://www.ia-stud.hiof.no/~kjellare/misc/Terminal.png
>
> ...using my data as input:
> http://www.ia-stud.hiof.no/~kjellare/misc/Norway_map.zip
> http://www.ia-stud.hiof.no/~kjellare/misc/input.txt
>
> ...and view the output shapefile that comes out of it, I observe  
> this strange offset between the map (or Norway) and my data (geodata  
> from images taken in Norway) and know something must be wrong.
>
> http://www.ia-stud.hiof.no/~kjellare/misc/QGIS.png
>
> Not knowing a whole lot about GIS, I would really appreciate help on  
> how to proceed from here to:
>
> 1. Work out the reason behind, and how to fix the offset problem
> 2. Change the map projection (preferably to Mercator) and have the  
> legend dots numbered
> 3. Output a png of a mesh between the map and the legend for web use
>
> Best regards,
>
> Kjell Are Refsvik
> Graduate student
> Ostfold University College
> Norway
> _______________________________________________
> Discuss mailing list
> Discuss at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/discuss

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