A term widely used to describe the combination of spatial software and analytical methods with terrestrial or geographic datasets
2
votes
0answers
78 views
How to interpolate GPS data correctly?
I'm working on a project that involves using linear interpolation to fit lines to
lat/lng points. I'm pretty new at scientific programming related stuff, and I was wondering if people could steer me ...
0
votes
1answer
60 views
How to calculate the size a bounding box?
What formula could I use to calculate the size in Kilometres of a bounding box based on a given Southwest latitude/longitude and a Northeast latitude/longitude points?
The bounding box format is ...
14
votes
3answers
251 views
When did the word “geospatial” first come into usage?
For historical reasons, I'm trying to figure out when the term "geospatial" came into use? The earliest usages I can find are from around 1994, but I would be really surprised if it wasn't used ...
2
votes
0answers
72 views
Geospatial Tools for SketchUp
I was wondering if anyone knows of geospatial tools that work in SketchUp? I know if GeoSketch, which allows a user to import ortho imagery, DEMs, shapefiles and GPS enabled photographs into SketchUp ...
2
votes
1answer
137 views
Convex Quadrilateral Polygons subdivision in equal parts using Python / OGR
Consider an irregular polygon (P) which has four vertices.
I would like to subdivide P into smaller polygons as shown here http://i.stack.imgur.com/4SKhB.jpg
In the old days I was using ArcGIS 9.3 ...
1
vote
0answers
102 views
Function for Selecting Points in a Polygon
I've been banging on this for a few hours, but since I'm relatively new to PostgreSQL and PostGIS, I can't find the solution. I'm trying to create a stored procedure (function) which will return all ...
1
vote
1answer
280 views
Produce raster map using universal kriging as interpolation method
I want to do kriging with external drift(universal kriging) in R. The covariate I use is in WGS84 refrence system. Because of nature of kriging which calculates distance in planar surface I have to do ...
-1
votes
2answers
133 views
Open Geospatial Consortium (OGC) standards
I was trying to understand about the OGC and OGC Standards but i got confused that are they provide standards like ieee or they provide standards that should be implemented with your application
i am ...
6
votes
3answers
99 views
How to cite Geospatial Data that has been edited?
I used data from the Ordnance Survey for some maps I created. License information for the Ordnance Survey says to cite OS data like this:
Contains Ordnance Survey data © Crown copyright and database ...
9
votes
2answers
117 views
How do I detect traffic incidents in a set of geospatial gps traces?
I have a large database of gps traces (long, lat, timestamp) and would like to see if I can detect when congestion occurs on roads from that data. Any idea's or pointers on good algorithms to use? ...
1
vote
0answers
52 views
Calculating tiles extents using some level data
I have some data looking like this:
<?xml version="1.0" encoding="utf-8"?>
<levels>
<level nr="0" tileWidth="512" tileHeight="512" envSizeX="5000" envSizeY="5000" minX="465000" ...
1
vote
2answers
193 views
What are some good examples of geospatial UI's
I am interested in understanding and applying practical geo-spatial examples for some of the transportation data that I have. I have several geocodes that I will pull from the database, and display in ...
2
votes
0answers
136 views
tools from Geospatial Modelling Environment in ArcMap model
How to extract raster DEM elevations to vector attribute tables in ArcGIS 10?
Can GME tools be used in model for publishing a tool on web? I want to use it in integration with other tools in ArcMap.
...
7
votes
3answers
332 views
Presenting geospatial data in Powerpoint
I am looking for a more elegant way to display geospatial data in Powerpoint. KMLs seem to be becoming the norm for quickly showing interactive geospatial data to colleagues and the general public. ...
0
votes
1answer
214 views
How to get points in bounding box by degrees for map
I have some concerns about working of BOX3D PostGIS function. I tried to find places in square -158.721365889063 66.09275164148659, 154.608712235937 52.56807548751039(degrees). But this where ...
