representation of an object

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49 views

Arcgis 9.3 Conditional Statement

I'm having trouble performing calculations with single output map algebra ArcgIS 9.3 using conditional statements and applying it to several model outputs as they are generated: The statement is: ...
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87 views

Problems running model in QGIS

I am trying to make a batch model to convert band 2 and band 1 MODIS 8 day composites into NDVI. The input files are in tif format, but I want the output to be saved in Idrisi .rst format. I am ...
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95 views

Can layers from Spatialite db be used as input for a Sextante model?

I'm trying to build my first models in SEXTANTE and already fail at the start. It seems not to be possible to add a vector layer which derives from a database. Orginally, the layers are from a .mdb. I ...
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218 views

How to solve the problem when buildings are extruded without roof?

I tried to extrude buildings in ArcScene with Extrusion function in Layer Properties. But most of the buildings seem like only their walls are extruded. Instead of solid blocks, they appear like no ...
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0answers
60 views

Gaussian plume model in PostGIS or geocouch

Does anyone know of existing code for dispersion modeling using Gaussian Plume or comparable model, that I could plug in / adapt to be used programmatically from PostGIS or alternatively via ...
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49 views

How to use Record Set to prepopulate table in ModelBuilder?

I'm running ArcGIS 10.2.1. and am trying to prepopulate a record set in model builder. The record set is set as a Modeled Parameter. I open the record set enter the information into the table and ...
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0answers
265 views

SAGA kernel density error with Sextante Modeler

I can succesfully perform SAGA kernel density analysis with Sextante (1.0.7) in QGIS 1.8.0. But i want to built an automated tool for this job with Sextante Modeler. But i got foolish errors. This ...
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153 views

How to create a dynamic distance calculator for selected line feature classes?

My situation: I am relatively new to GIS so forgive me if this is a stupid question. I am working on a project at a park that I am interning at where the goal is to create a single feature with ...
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38 views

Sort polygons from north to south in QGIS using 'graphical modeler'?

I'm building a model in 'graphical modeler' in QGIS 2.2. I want my model to clip a polygon layer and give the polygons coordinates so that I could sort them geographically from north to south. After ...