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1
vote
1answer
418 views

Is there any pseudocode for MFD (multiple flow direction) algorithm available?

Still stuck with the simulation system, is there any good pseudocode for the multiple flow direction (MFD) algorithm? I read a pseudocode example and implemented it, however the simulation was linear: ...
1
vote
0answers
41 views

How to create the fuel models & live fuel moisture rasters for Wildfire simulation?

Has anybody done wildfire modelling in GRASS? Where could I obtain / how do I create the fuel models and live fuel moisture rasters to determine rate of spread (r.ros)?
16
votes
2answers
207 views

Is there a standard data model for storing traffic volumes, layout, lanes, timing and phasing information?

I am at a crossroads where I want to store more than a scenarios worth of project data from a Synchro study, but do not want to keep this data in a series of text files. The data output by Synchro is ...
1
vote
1answer
433 views

How to use GRASS with HEC-RAS?

I am trying to use HEC-RAS for the flood modelling of my flood simulation. How do I use the text file output of HEC-RAS with the GRASS script r.inund.fluv?
7
votes
1answer
259 views

How to simulate moving vehicles?

I have a point layer (stored in SQL Server 2008) that is being served up by a map service in ArcGIS Server 10.1. I am consuming this service in a web client. Lets say the points are boats out at ...
0
votes
0answers
85 views

Change Detection on bitemporal multispectral images - data simulation

I want to try several "backgrounds" for change detection on bitemporal images (satellite images of the same place but in different moments in time). Images consist of 5 bands. I have python ...
5
votes
2answers
248 views

Are there GIS tools for simulating landscape fragmentation?

I am currently looking for any GIS packages (or add-ons) that allow the simulation of landscape fragmentation on raster data. Maybe also other software than GIS tools? Does anyone of you have had ...
14
votes
1answer
530 views

Monte Carlo simulation using QGIS and pgRouting on optimal sidewalk construction

I am new to spatial analysis and would appreciate some general direction on a project I am attempting, outlined below (I am starting from scratch). GOAL: To find the best locations to install 2000 ...
4
votes
3answers
437 views

How to create network simulation / temporal models for videos?

I know of ArcGIS Tracking analyst and QGIS Time Manager. I have a transportation network with time based schedule for buses. I will create time aware shapefiles from this data. Is it possible to ...
4
votes
1answer
336 views

Simulation envelopes and significance levels

Many spatial analysis packages provide Monte Carlo techniques to simulate upper and lower “envelopes” for a summary statistic as a function of distance (e.g. K-function, nearest neighbor, etc…). ...