17,785 reputation
11660
bio website mappagnosis.com
location United Kingdom
age
visits member for 3 years, 5 months
seen yesterday

I am a freelance GIS consultant with specialities in 3D visualisation (e.g. www.deepmaps.co.uk and animated landscape models for public participation in planning), wind farm analysis and bespoke geospatial analysis.

Previously I have lead a small commercial GIS consultancy team in a large research institute, headed up a team undertaking a massive geo-data processing endeavour of entire country and world-wide data sets as part of an ambitious computer games development project before becoming GeoMatics Manager for the UK branch of a German wind farm company.

I 'grew up' on ArcInfo 6.x and migrated to ArcGIS, while dabbling with Idrisi and ERDAS Imagine. I now predominantly use open source software (e.g. GDAL/OGR, Shapely, PostGIS, OpenLayers, QGIS, GRASS, Mapnik etc.) and highly commend the OSGeo 'stable' to anybody looking for an alternative to expensive proprietary GIS solutions. Other experience includes WindPro, WindFarm, OpenWind, Blender, GIMP, Python and Eclipse.


May
21
reviewed No Action Needed Open a GeoJSON file with QGis
May
21
comment Remove no-data values from a raster using raster calculator
Please clarify what you mean by 'remove'. Do you want to: 1) replace the NoData values with a single value (say 0); 2) replace the NoData values based on another raster; 3) replace the NoData values based on some statistical function of the surrounding data; 4) replace the NoData values based on the nearest neighbours in the existing data?
May
20
comment How can I create a 10m DEM from the 30M DEM with me?
+1 You must have added this while I was typing - GDALWarp would give a very similar result to r.resamp.interp and is an option I forgot to list.
May
20
answered How can I create a 10m DEM from the 30M DEM with me?
May
18
reviewed No Action Needed Tell leaflet.js to reload tile which is not loaded
May
18
reviewed No Action Needed Strange spatial interpolation results from ordinary kriging
May
18
reviewed Close Is Cokriging in Python to load into ArcGIS Desktop possible?
May
18
reviewed Reject Since upgrading to ArcGIS 10, my application doesn't rescale the map when the window is resized
May
18
reviewed No Action Needed ogr2ogr fails to process SRS definition
May
18
comment Is Cokriging in Python to load into ArcGIS Desktop possible?
The short answer is 'yes' so long as your output from Python is a format acceptable to ArcGIS. For a better answer you need to improve your question.
May
7
comment Geoserver : Publish Postgis Layer
That does sound like you are possibly lacking some PostGIS functions but I don't know how you can have some functions and not others. I'd try re-installing the latest version of PostGIS compatible with your Postrgresql version and then upgrade your database as per the documentation.
May
6
comment Geoserver : Publish Postgis Layer
Does the data display correctly in a GIS (QGIS for instance)?
May
6
comment Understanding the format: WKB from WKT and how to convert the first into the latter
What software environment are you using? Is it PostGIS as per the example or something else?. Also, if you are using Postgresql, do you have PostGIS installed (it is not a standard part of Postgresql - which could explain why the function is missing - can you confirm? Finally PostGIS stores geometry in a hexadecimal format (note Vince's comment), so have you tried ST_AsText?
May
6
comment Geoserver : Publish Postgis Layer
I suspect there is no srid set in PostGIS, but that by itself is not necessarily a problem. Do you know what the CRS ought to be?
May
6
comment Geoserver : Publish Postgis Layer
Does your PostGIS layer have an entry in the geometry_columns or geography_columns views and, if so, does it have a valid entry in the srid column?
May
6
comment How to not process when query is outside the raster extent ? (Error when Completely Outside)
This is only really an issue if you are automating your process to iterate over multiple rasters. If you are not, then simply check the extent of the raster first (using gdalinfo). If you are automating the process, please edit your question to state which language/libraries you intend to use (though basically you just need to do a similar check in your iteration loop).
May
6
comment Feature is a point or polygon
Welcome to GIS and welcome to SE! Is this a homework question because a quick trawl of publicly available data will give you the answer and a brief glance at a basic GIS textbook will tell you why? If you have a specific issue in mind, please edit your question.
May
5
comment Creating 3D terrain/model from contour lines, preferably using Open Source GIS?
What is you ultimate goal? What you want to achieve will determine the approach and software. There is a 3D data viewier called NVIZ in GRASS (and therefore available in QGIS) and that might be all you need after exporting the contours. Alternatively you may want to achieve something more sophisticated. Again, it migt be that you don't need a 3D viewer at all if you want to perform some calculations (e.g. line of sight, viewshed, flow accumulation etc). So please can you edit your question to provide more information.
May
4
reviewed No Action Needed Error 010092 for FeatureToRaster in Pythonwin
May
4
answered How to create a compressed GeoTIFF with the QGIS Clipper tool?