A methodology or set of analytical procedures used to derive information about spatial relationships between geographic phenomena.
12
votes
1answer
973 views
Open-source GIS implementation of the Huff model
This might be a stretch, but I was wondering if anyone implemented gravity modeling tools or scripts for Retail Market Analysis (like the Huff Model), to analyze spatial data for customer-store ...
6
votes
1answer
872 views
Is there are QGIS plugin to allow the 3d visualisation of geological borehole data similar to the functionality of Target for ArcGIS?
I'm very new to QGIS, I have started using it as my new company is not willing to pay for ArcGIS and Target at this stage so I'm hoping QGIS can substitute not just in the interim but for good.
What ...
4
votes
2answers
844 views
compound variables in model builder?
I'm trying to create a model wherein one of the parameters is a compound variable, that is made of multiple variables joined together. How can this be done?
For Example: Create an insider buffer ...
15
votes
4answers
480 views
How to handle TIME in GIS?
Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
11
votes
4answers
494 views
What are some 3D visualisation tools that successfully work with GIS data?
There are a large number of 3d modelling tools available (both open and closed source). I would like to be able to:
Import GIS data into a 3d environment and retain georeferenceing.
Retain the ...
7
votes
2answers
298 views
How to create noise maps? (open source or scripted in ArcGIS)
In a previous role I helped create Noise Maps for Northern England.
The predicted noise levels was done using the IMMI package (which I can recommend) and the cartographic output was done in ArcMap. ...
15
votes
3answers
497 views
Lightsquared GPS controversy: Where is the analysis?
GPS World reports that Lightsquared's network of 40,000 transmitters will interfere with GPS signals.
Initial technical analyses have shown
that the distant, low-powered GPS
signals would ...
7
votes
7answers
606 views
seeking “Available Sky” implementations
I'm looking for implementations of an algorithm called "Available Sky". ArcGIS (Spatial Analyst or GRID) is preferred, but solutions in GDAL, SAGA GIS or others are perfectly acceptable.
The ...
