14,264 reputation
1951
bio website mappagnosis.com
location United Kingdom
age
visits member for 2 years, 4 months
seen 4 hours ago

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.


Apr
11
revised Draw lines from points in QGIS
added 176 characters in body
Apr
11
answered Draw lines from points in QGIS
Apr
4
comment Which interpolation method for noise mapping?
Excellent - I think it would be valuable to report back what you find between the tools.
Apr
4
comment Measure average distance between two lines with common endpoints
The interpretation will depend on the original data and what THAT mean (we are not told so I haven't attempted a suggestion). I don't think there is any ambiguity in the description. I only recommended dividing one line. But, for clarity, only the straight line is subdivided and provides reference points to create M values on the other line. The distance is then calculated from the reference points (on the straight line) to the location of the CORRESPONDING M values on the wiggly line.
Apr
4
answered Measure average distance between two lines with common endpoints
Apr
4
revised Which interpolation method for noise mapping?
added 25 characters in body
Apr
4
comment Which interpolation method for noise mapping?
I must admit that I haven't used SPreAD as I usually have a wind farm package to hand and that's where most of my noise calculations are focused. However, I looked at the blurb and it seems very interesting (not least because it is free) and accounts for a lot of effects such as up and down-wind losses, terrain, etc. When time permits, I must compare the output to my usual tools. Thanks for the heads-up.
Apr
4
revised Which interpolation method for noise mapping?
Removed the misleading 'cartography' tag - the others are much more appropriate.
Apr
4
revised Which interpolation method for noise mapping?
added 1074 characters in body
Apr
4
answered Which interpolation method for noise mapping?
Apr
4
comment Why does QGIS 2.2.0 displaying triangles instead of rectangles?
The plot thickens! I'm using 32bit on Windows 7. I think the unclosed rings that Andre mentions is the key. So, I still think that the data must be corrupt and QGIS is trying (and sometimes succeeding) in resolving the bad geometry.
Apr
4
comment Why does QGIS 2.2.0 displaying triangles instead of rectangles?
I have also tested the Metropole and Reunion data and it all loads as expected (rectangles). I do not think this is a bug at all. I think you have some corrupt data. This is more likely than such an obvious bug in the OGR implementation of the MIF format (which QGIS uses under the hood). It's been stable for a long time! I recommend you try downloading the data again.
Apr
4
comment Why does QGIS 2.2.0 displaying triangles instead of rectangles?
I have just loaded the Metropole data and it works perfectly for me. I also suspect it must be bad data that has maybe been updated between when you downloaded your and when I downloaded mine (just now).
Apr
4
comment Why does QGIS 2.2.0 displaying triangles instead of rectangles?
I can't reproduce the error. I see rectangles (I tested with the Martinique data) and opened in all QGIS versions from 2.0 to 2.3.
Apr
4
revised Adding graticules to the edge of the map only in QGIS
Clarified the titel a little for future readers
Apr
4
reviewed Close Extract coordinates from polyline in QGIS
Apr
4
reviewed Close Where Can I Find CGA City Engine Documentations?
Apr
4
comment Techniques for Filtering the Attribute Table in QGIS's Print Composer
You don't need to duplicate your data on disk (which is begging to get out of sync down the line). Just duplicate your layer in the Layer's list (see my answer below).
Apr
4
revised Techniques for Filtering the Attribute Table in QGIS's Print Composer
corrected typo
Apr
4
revised Techniques for Filtering the Attribute Table in QGIS's Print Composer
added 603 characters in body