Tagged Questions

2
votes
1answer
63 views

How to access the road graph plugin in python?

I am developing a few scripts in Python for QGIS 1.8 to automate some geo-tasks and one of them would be to calculate the shortest distance from a hospital to each building in a town. I would like to ...
0
votes
1answer
70 views

openlayers python proxy.cgi script is not taking parameters

I have setup the python proxy.cgi in cgi-bin folder in my server. [myserver]/cgi-bin/proxy.cgi returns the openlayers website [myserver]/cgi-bin/proxy.cgi?url=www.openlayers.org returns list index ...
3
votes
3answers
397 views

How do I apply Dijkstra's algorithm in Python with PostGIS data?

I have currently parsed OSM data, from a PBF file, into a pgRouting database with the use of osm2po, an excellent parsing tool. I don't however want to use the algorithms provided by pgRouting and ...
1
vote
1answer
44 views

Styling map elements based on their properties

I am currently generating tiles based on OSM data using Mapnik and Python and am quite happy using the XML styling but I am at a loss as to how to vary the styling on an element by element basis. I ...
4
votes
1answer
152 views

How to interpolate polyline or line from points?

We have a lot of points, but with no timestamps to create ways. For now, I've created a sample of the way the points traverse. It's in here, this way can be compared with a Google one. I haven't ...
3
votes
2answers
152 views

OSM Python Utils: Modifying generate_tiles.py to create 512 x 512 tiles?

[Edited to include example image outputs] SE folks, I'm wanting to modify generate_tiles.py to create 512 x 512 tiles. At om_henners' recommendation, I tried replacing 12 of the 13 instances of 256 ...
3
votes
2answers
63 views

Where can I get public transportation route information for USA?

I'm trying to find a list of public transit route information, mainly location of bus and train stops for the US. I've looked around at some of the Google products and openstreetmap but can't find ...
6
votes
2answers
118 views

How to improve positioning of images taken with GPS and Gyro info?

I'm sort of 'recreating' google street view with MIT right now. We have a car with a camera on top and we're driving at 10mph down a road. As we drive we're shooting pictures at 30fps and each photo ...
1
vote
0answers
105 views

produce images with shapefiles and OpenStreetMap

I have a python file http://pastebin.com/jzwE6c6P which iterates over the features of a shapefile and renders a simple image by zooming to the bounding box of each feature. What I need is ...
2
votes
1answer
165 views

How to manipulate OpenStreetMap schema to be useful in ArcGIS applications?

I have a shapefile of OSM data. I plan to use the data for an ArcEngine application, and I was wondering if there are any existing solutions to getting the data's schema into your typical GIS format. ...
1
vote
0answers
86 views

refactoring an XSLT processor with minor changes

having an extremely large xml-file - which is derived from the field of geo informatics. i got it from a German subsite or the OpenStreetMap-Project: the Geograpical-Engineering-site that deilvers a ...
2
votes
2answers
331 views

Convert CSV files into OSM with FME

I have a database which i've exported as individual csv files for each table. Below are some of the attributes which exist from two of the csv files: wayPointID linkID order x y z length ...
2
votes
2answers
436 views

Mapnik TextSymbolizer showing nothing above OpenStreetMap base layer

I'm trying to use Python to create a TextSymbolizer to display a trail name above the trail LineSymbolizer. Below this layer is the OSM base layer which contains its own data for that trail. I can ...
4
votes
1answer
368 views

Trip travel matrix on OSM data

Here's my situation: I'm modeling travel logistics I have 1,000 nodes, on my road network I'd like to generate the minimum driving time distance between all these nodes This process will be done 24 ...
3
votes
3answers
169 views

Is there a way to locally add links to an OSM data set

Here's what I'm trying to do: I'm modeling some transportation logistics data I want to test the effects of a "new highway" on existing travel demand The new road will be created from an arbitrary ...