I have an arcpy script that makes calculations based on an input PolygonZ feature class. What I need to do in several places in the script is test whether a point falls within a polygon in 2D. In ...
My model has two model parameters: A file gdb workspace or sde workspace containing the data An empty "template" file gdb As the very first process in my model, I want to check if the schema of ...
I want to calculate the percent change for median household income in Los Angeles at the block group level from 2000 to 2010. Someone told me I have to reaggregate 2000 block data to 2010 block group ...
In what data format should I export a (lat,long,alt) or (x,y,z) grid to be compatible with the largest number of GIS software?
I am new to GIS and developing an application that generates a 3D grid with (latitude, longitude, elevation) or (x, y, z) metric triplets, and I would like to add an exporting feature that ensures ...
For my final academic work I have developed a compression algorithm for GPS trajectories. I can estimate the quality of the spatio-temporal compression by computing the syncronized euclidean distance (...
I'm curious as to what comparisons are out there between different Open Source Desktop GIS software packages. I'm aware that there has been a QGIS and gvSIG comparison on this site but I am looking ...
Manifold GIS allows the creation of dynamic drawings linked to queries. Unfortunately I do not have access to Manifold as my employer refuses to pay for it, so am currently investigating alternatives....
Which .NET mapping components are currently available? Focus is on desktop use and fairly basic mapping of SHP files (thematics etc.), not the more advanced GIS functionality (reprojections, clipping, ...
What are the pros and cons of using the ArcGIS Viewer for Flex vs. creating your own GIS application vs creating your own framework?
Simple question, but perhaps hard to answer. I have broken the title question into three distinct questions in order to clearly identify what we are considering for options each time we build an GIS ...
I would like to be able to compare features in Layer 1 (source) to features in Layer 2 (updates to source) in order to see if any of the features geometry and/or attributes have changed. I would also ...
I'm looking for a tool which compares two vector files (eg shapefiles). Eg 2 versions of a river network. Quite a lot of the records are equal, but some are different. A possible output would be eg a ...