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seen Nov 28 at 11:14

Aug
24
awarded  Enlightened
Aug
24
awarded  Nice Answer
Jun
15
awarded  Yearling
Feb
18
comment How to find and merge duplicate points?
Perhaps you should re-phrase your question then..
Feb
18
comment How to find and merge duplicate points?
How would you assign the tolerance per point given that the radius is variable?
Oct
27
comment Measuring distance between points along a river system
Without seeing your dataset, it sounds like you would need to process your data a bit before you can identify a solution. There's no way for the application to intelligently infer what order you expect the points to be in.
Oct
27
comment Inverse Distance Weighted Python error in QGIS 2.0
Check the attributes for any non UTF characters. If there are too many, try removing all fields you don't need for the analysis.
Oct
27
comment Inverse Distance Weighted Python error in QGIS 2.0
What file format are you working with? If it's text based, I would suggest converting the encoding to UTF-8.
Sep
24
awarded  Quorum
Sep
24
comment How to create label with variable size in ArcMap?
Have you had a look at the documentation? resources.arcgis.com/en/help/main/10.1/index.html#//…
Sep
4
comment How can I statistically calculate the “real” road from a set of GPS tracks
Interesting project - quite similar to an inspection algorithm I wrote years ago. Since I'm lazy, I can only offer a few hints. Most important factors are direction of travel, signal quality and your velocity (ie. if you're just standing around, it's not a road). Best to first cull the points that are too far off that way. Other than that, I'd apply a smoothing algorithm (try DP) then average the lines.
Aug
26
comment How to make grid lines opaque so just lat/long coords are on map border?
What method have you used to create the grid - there are many.
Jul
31
answered OpenLayers, Geoserver, Postgis, GITHUB and content management
Jul
16
comment How to get bounding box coords?
You would need to georeference the image, either manually or in an application that does this. See this question for further information: gis.stackexchange.com/questions/63953/…
Jul
3
answered how to create grid to divide large map into smaller sections
Jun
28
comment How to match GPS collected data to routes on Google Maps?
@opc0de Firstly, you have 2 waypoints over the span of what looks like 500m. Trying to interpolate and superimpose your position between those 2 points is impossible. Google maps can guess where you drove, but with absolutely no certainty unless you have additional accelerometer, wheel tracking data as well. Consumer based products use a combination of high sample rate (1/sec), possible accelerometer data, and complex algorithms that take into account street length, turning time, street direction data etc. Source: I've designed such algorithms that are used in production globally.
Jun
27
comment How to match GPS collected data to routes on Google Maps?
While you may be able to find a solution for some cases, it won't work every time. Think about what's going to happen when you end up in a high rise area - or any area - with little to no GPS signal. The app can't intelligently guess where you're going, so why do you expect it to? You obviously need more training in how this 'stuff' works.
Jun
27
comment Should states/provinces be stored as geographic or geometric data types?
Related: stackoverflow.com/questions/6708362/… N.B. Although the referenced post is for SQL Server, the differences between geometry and geography are transferable to any DBMS that adopts the standards correctly.
Jun
21
comment arcpy.CopyFeatures between file GDBs?
Does the feature rely on any coded values or have any topology dependencies?
Jun
20
answered Michigan Projection with GDAL or FWTools