Tagged Questions
1
vote
0answers
62 views
Creating Raster with values based on function output
I have a function that calculates a price based on the input slope and distance. I want to write the price to a raster as the rastervalue. How do I do that? OpenSource and ArcMap solutions would work.
...
1
vote
1answer
211 views
GRASS Geoprocessing in Python Script
I´m trying to get some GRASS geoprocessig tools running in a python script outside GRASS.
I´m able to import grass.script, but I´m not able to get the tools running yet. Does anybody know what I´m ...
2
votes
0answers
93 views
Getting SAGA-GIS Python Bindings without compiling from source
I am very new to SAGA-GIS, but I recently developed a workflow using SAGA for processing LiDAR data. Now I need to batch the process using Python. I installed SAGA from the Windows installer and I ...
5
votes
4answers
1k views
Large mosaic process failing - what are the options? software independent only focussed on result
I need to mosaic about 550Gb of tif imagery together and the software I have tried keeps failing. The area has been split into zones so that the smallest has approx 200 tiles.
I have used the latest ...
27
votes
1answer
2k views
How to smooth the polygons in a contour map
Here is a contour map for which all the polygons of levels are available.
Let ask how to smooth the polygons keeping all vertices preserved in their exact locations?
Indeed the contour is made on ...
20
votes
8answers
1k views
How to easily shift all features in a vector dataset?
Let's say that I put together a Shapefile and all the features have their vertices shifted by a constant amount. What's the easiest way of shifting all the features (hence the (x,y) position of their ...
-1
votes
1answer
112 views
GeoPortal Managing Tool [closed]
i know in this site everybody more or less have been setup a geoportal for showing their basemaps and analysis on local or net for their workers or conserned people in the net.
it is obvious that in ...
10
votes
2answers
469 views
Metadata -auto build using python
We have a large (10,000 plus) repository of spatial data (shp/gdb/tab vectors and ecw/tif rasters and also las, xyz and DEM data) where some have metadata records in xml using anzlic metadata editor. ...
11
votes
1answer
312 views
automating roof orientation detection from satellite imagery
A while ago I did a neighbourhood roof orientation survey for solar panel deployment, by visually checking each roof and marking individually whether they were south or almost south-facing.
As this ...
10
votes
3answers
1k views
Is there a Python Lib for requesting WMS/WFS and saving as image/PDF?
i am wondering whether there's Python open-source GIS lib which has APIs to support call WMS/WFS from another GIS server (e.g., GeoServer) and then save the response data(WMS Basemap and WFS layer) as ...
12
votes
4answers
660 views
Python module to delete SHP features (without Desktop GIS installed)
I have a piece of software (not Arc) that runs nightly on a non-production machine which updates shapefile features from an external database. Periodically I would like to delete all of the features ...
5
votes
2answers
346 views
select by attribute on shapefiles with open-source python modules
I usually use ArcGis 9.3.1, but when running a python script that includes Select_by_attribute (from gp), the script runs very very slowly. Is there a way I can perform a select-by-attribute on a ...
3
votes
2answers
144 views
How to bring polygons closer to a point?
I have some scattered polygons with a lot of space between them.
I want to make a thematic map but all that white space doesn't look very good, so I want to bring the polygons closer to the center of ...
7
votes
3answers
2k views
Get all vertices of a polygon using OGR and Python
I'm having a little trouble with the Python OGR API. What I am trying to do is get all the coordinates of each vertex of the outer ring of a polygon.
This is what I have so far:
import osgeo.ogr
...
6
votes
1answer
339 views
Is there a GeoDjango tutorial for GeoRSSFeeds?
I'm going through GeoDjango basics right now. Ideally, I'd like to publish a GeoRSS from a set of data I have that is already in Django's database. I know how to get a regular Feed working, but when I ...
