The process, using formal methods, of evaluating a system or software component to determine whether it functions as expected and achieves the intended results.

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How can I edit spatial data automatically on postgis and check for topology errors on said data whitout using shapefiles?

So, I have spatial data stored in postgis (points, lines and polygons) and would like to edit and update those in an Open Source software (quantum GIS, grass, etc.) to check for topologic errors, ...
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58 views

ArcGIS Metadata validation

I have been importing metadata from an xml file generated with an xslt transform. During the import process, ArcGIS attempts to validate the metadata. It gives a number of cryptic validation warnings ...
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715 views

Validation of Regression Kriging

I am interested in exploring the idea of generating a predictive model for a target variable in a spatial context. I would then like to correct the residuals of this model using kriging, i.e. in a ...
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42 views

Explanation of the Thinness ratio formula?

I am looking for sliver polygons and am using the following formula to identify which polygons have a smaller area-to-circumference ratio (aka Thinness Ratio): 4 * pi * area/(length*length) That ...
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21 views

Deriving RMS Error Interpolation Method in ArcGIS

Which is the best process for deriving RMS error for interpolation methods. I would like to compare which of the interpolation method in ArcGIS is best for my data.I need the procedure of determining ...
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18 views

Rooftop Features' Validation using GIS

I am working on rooftop PV potential assessment of resident buildings using GIS tools and techniques. I would like to seek an advise that can we validate extracted rooftop features of residential ...
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202 views

Interpreting U-Blox GPS receiver data

Currently I'm writing software for a simple device for car, which will compare car's location to database locations and alert user. I'm using U-Blox 5 series GPR receiver. Reference manual is here. ...