1,116 reputation
513
bio website relet.net
location Honefoss, Norway
age 33
visits member for 4 years
seen Mar 25 at 21:23

Developing services for Kartverket, the National Mapping Authority of Norway.


Feb
25
comment Libraries and/or ideas for navigating WMS time-parameter
How much screen estate do you want to use for the control? Sliders work if you have a lot of room (otherwise you will have problems with fine-grained control), calendars/spinners provide better control with less space, at the cost of speed of use. I believe there should be a lot of prior art in UI design for time/date selectors.
Jul
30
awarded  Yearling
Jun
3
comment Creating nanoscale DEM with GDAL
In a non-projected file, you would convert from pixels to distances via the dpi setting ("dots per inch"). If you have a task where GIS tools work better than CAD/analysis tools, I think you could always use the actual dpi value (which should be pretty high) and units of distance in any projection to make the distortion neglectably small.
May
6
comment uncaught typeerror: undefined is not a function
Make sure your copy of OpenLayers has WMSGetFeatureInfo built-in. OpenLayers is a modular system, and not all the possible features are activated by default in every version/distribution.
May
6
comment Is there a way to identify and remove similar GPS tracks in PostGIS or ArcGIS?
That should work a lot faster indeed.
May
3
comment Is there a way to identify and remove similar GPS tracks in PostGIS or ArcGIS?
You can still compare the tracks segment by segment, increasing the index on track A until it passes the current index on track B, then increasing the index on B and repeat.
May
2
answered Is there a way to identify and remove similar GPS tracks in PostGIS or ArcGIS?
Apr
22
awarded  Constituent
Apr
20
answered Is there a public Web Map Tiling Service (WMTS) available?
Apr
18
awarded  Caucus
Feb
12
answered Ogr2Ogr SQLite Geometry Functions
Feb
12
comment Ogr2Ogr SQLite Geometry Functions
I can confirm BradHards - the spatialite extensions in the sqlite driver are optional.
Oct
8
answered How to split OSM roads into individual segments at intersections?
Sep
26
comment How do you treat partial 3d features in PostGIS?
A 0 z coordinate is not correct, and does not represent the same value as the data source. ST_Force_3D will not work for us. The idea is to be able to have a correct bidirectional mapping between the data source and our database.
Sep
25
asked How do you treat partial 3d features in PostGIS?
Aug
7
answered How to compare geometry in PostGiS?
Jul
30
awarded  Yearling
Jun
8
awarded  Constituent
Jun
8
awarded  Caucus
May
7
comment How to smooth the polygons in a contour map
It seems to me that some of the artefacts are caused by repeating points, causing a corner in the curve. Do you maybe feed the function with the polygon definition without removing the duplicated start/end point? (Or actually, it might be the opposite, that Scipy.interpolate does not consider the curve a loop)