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I want to create a point vector dataset of 10000 points (or larger) within a binary raster, where the points should be constrained to areas where the raster value is 1. I tried the following steps. Polygonize raster QGIS: Vector -> Research Tools -> Random Points This works fine up...

Is it possible to extract spatial correlation values between kernel data (from point data) and land use (vector) and land cover (raster)? My goal is to quantify the relationship- if any- between a social phenomenon and land use and land cover. How can this be done and what software would be...

I am working with the application which uses leaflet api. Introduction I needed to draw different types of fences, using decorators i can somewhat apply good visuals to the polylines but not much. Problem I was willing to show twisted wires instead of dashes, dots or plain lines and...

I would like to create a route line based on a point layer. The existing tool does not meet the customer requirement. But using the code snippet below, the start point and end point are always the same. Does it means they point to the same instance? Please help. Thanks. rows =...

I'm new to GIS related things and I'm setting up a Postgre/Postgis database for geospatial queries. I'd like to import various shapefiles into the database and I found that Pgadmin3 has a shapefile importer. How do I install the shapefile import plugin for pgadmin3 (I'm on Mountain Lion 10.8)...

I'm trying to convert a DXF 2010 file to KML using ogr2ogr: ogr2ogr -f "KML" outfile.kml infile.dxf In the file, $INSUNITS is 6, that's meters, if I'm correct? The problem is that DXF is not georeferenced, and I get errors like: ERROR 1: Latitude -1113854.310000 is invalid. Valid range...

I'm using Spot 5 image to run an NDVI analysis. The band that I used in processing is 4,3,2. The area was 80% covered by mangrove. My problem here how can I create a map to show or present the result? Basically I run the NDVI using the function automatically under unsupervised > ndvi in erdas...

Imagine I have a polygon, which represents the countours of a building on an integer 3D map (everything is a 1 meter by 1 meter block in that map). In the image below, you see several buildings without roofs. In order to draw the roofs, I need to know what points are inside the polygon. What...

I've got a raster ortophoto and a polygon layer: I need to alter the raster layer as follows: Everything that is inside the polygon (overlaying) should stay as it is right now (in color). The rest of the raster image (the zone that is not overlaying the polygon) should be changed to...

Is anyone able to recommend a program/process/method for merging ecw images together. I have approximately 2000 ecw images (tile) that 1.5x1.5km each which together and put to combine them all together to make one mosaics there is no overlap but each tile abuts exactly to the next...

I've just upgraded to Valmiera in QGIS, the only way to do spatial analyses appears to be with the experimental AniMove plugin (?) which is not appearing in my GUI. Can anyone tell me where to find the plugin and how to make it work? أكثر...

After restarting the entire server I continue to get this error when accessing any mapagent service (e.g. http://myserver/mapserver2013/mapagent/mapagent.fcgi?SERVICE=WFS&request=getcapabilities). Although the error does a good job at suggesting the problem there is no help for how to actually...

My organisation collects a lot of environmental monitoring data (stream flow, water chemistry etc.) most of which is currently stored in Excel. I’d like to get everything into a database – probably PostGIS – but I need the data to be accessible to people with no knowledge of databasing...

We're building a U.S. street routing application (finding paths for cars between two or more locations using public roads) and would like to use open source data US Tiger Data or Open Street Map or other if available nationally. We have worked extensively with the US Census Tiger Street...

I have a list of roughly 500 addresses that I'd like to plot on a map either as a point layer or as a kml/placemarks. The addresses are in form 123 QGis Street, Province, Canada, A1A 1A1 أكثر...

Bonjour, Après consultation des différents posts sur le sujet je n'ai pas trouvé réponse à mon probleme. J'essaye de mettre en place le plugin cadastre de QGIS afin de rechercher les propriétaires de parcelles. Je vous décrit ci après ce que j'ai fait et ce qui ne fonctionne pas: -... أكثر...

This week Google released an update to Google Maps for iOS that adds a companion app for your wrist if you own Apple Watch. This is an interesting news as it indicates that Google is not ignoring the smartwatch platform of it’s competitor. It’s actually the first Google’s app for Apple’s new...

I have to parse terms like "factor_date" , "config" and take the values of those (after = ) and put that into your dictionary input. argstring="--config=gn_compare.config --factor_date=20150901" arg_list = argstring.split(' ')input={}for arg in arg_list: x=arg.strip('--').split("=")...

I have multiple vector layers which is constructed of 3 parts: start point, line, end point. Each of those features has its own style. start point is a green circle, line is grey and end point is a red circle. I also enabled selection and it is working, but how do I programmatically select the...

I want to to parse terms like "factor_date" , "config" and take the values of those (after = ) and put that into your dictionary input. argstring="--config=gn_compare.config --factor_date=20150901" arg_list = argstring.split(' ')print arg_listinput={}for arg in arg_list...