15,394 reputation
11356
bio website mappagnosis.com
location United Kingdom
age
visits member for 2 years, 9 months
seen 6 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.


1d
awarded  Explainer
Sep
26
answered How to find a location is inside a country?
Sep
23
comment How to check shape length before running code in Python/ArcPy?
Alternatively add an 'if' statement to check line length.
Sep
22
comment Saving project from QGIS to CD so it can be used on other computers?
Please see my edit above
Sep
22
revised Saving project from QGIS to CD so it can be used on other computers?
added 505 characters in body
Sep
22
comment Saving project from QGIS to CD so it can be used on other computers?
Do the other computers have QGIS installed and, if not, do you admin privileges to install it?
Sep
22
answered Saving project from QGIS to CD so it can be used on other computers?
Sep
15
comment Can two files have the same coordinate system and still don't align /overlap?
You state that you defined the CRS of the files. Did the files not have any CRS originally? If so, they might not necessarily have been in the same CRS to start with and there is a big difference between defining the CRS and actually transforming a projection.
Sep
15
comment Why are my DMS points plotted way off from their true locations?
Yes, it is very possible that the coordinates were not WGS84. The distance of 1000 miles very much suggests a different coordinate system to WGS. Can you state the locations of where the coordinates are supposed to be from and then give us some example coordinates from the GPS file. It will give us a little more to go on when suggesting where the error lies.
Sep
11
revised Is there a way to shift data in an attribute table so that all attributes are moved to a different coordinate?
added 39 characters in body
Sep
11
answered Exporting QGIS shp file to dxf-Which dxf format?
Sep
11
answered Is there a way to shift data in an attribute table so that all attributes are moved to a different coordinate?
Sep
3
revised How to smooth/generalize a polygon in qgis
Added search tags
Sep
3
answered How to smooth/generalize a polygon in qgis
Sep
3
comment Open Source Tools for Swept-Path Analysis?
I did develop such a tool, yes and use it commercially so I'm reluctant to release it. I also wrote it using the key-frame spline deformation capabilities of a 3D modelling package to save a ton of coding on my part, so it wouldn't work in QGIS anyway. Maybe something similar could be done using the CAD tools or curves in PostGIS? If you do find a free tool of this nature - do report back because other will want to know.
Sep
2
comment ArcGIS Viewshed without Observer Points
If you follow Erica's suggestion and convert to points, Viewshed will return a raster whose value is the number of points that can 'see' a given location. So those locations with the highest values and ones from which the greatest proportino of the line will be visible.
Sep
2
comment ArcGIS Viewshed without Observer Points
Hah! - you just beat me to it +1. One missing piece of the puzzle the OP asked for was to have a gap of 10m from the line. So also add the field RADIUS1 (set to 10) along with OFFSETA and OFFSETB.
Sep
2
comment Why does my clipped raster seem to be slightly moved?
In addition to Michael's excellent response, if you have clipped your raster you may well have a different range of values. The range of values is used to set the stretch on the shading (default grey-scale) and that can make the raster appear different (the degree of difference depending on the amount by which the raster statistics in the clipped version are different to those in the original).
Aug
30
revised Creating counties in QGIS
added 131 characters in body
Aug
30
comment Creating counties in QGIS
Mapperz' link seems to be just for Edinburgh, but is interesting nonetheless. You could also try this one: visionofbritain.org.uk/data/# (and it does claim the Scottish county boundaries are pre 1890 - though I've not looked at them).