Linked Questions

83
votes
8answers
10k views

Managing large amounts of geospatial data? [closed]

How do you manage your geospatial data? I have terabytes of data spread out over hundreds of datasets, and have an ad-hoc solution using symbolic links within projects which link back to an domain-...
50
votes
5answers
9k views

Debugging ArcPy scripts?

I have written many Python scripts using ArcPy in ArcGIS 10, and so far my only means of debugging is restricted to printing messages to the geoprocessing results window using arcpy.AddMessage(). ...
26
votes
3answers
10k views

Dividing polygon into specific sizes using ArcGIS Desktop?

I have several thousand irregularly shaped polygons in a shapefile. I want to be able to split each polygon into three areas, and to specify what the size of those areas (they sum to the previous ...
27
votes
2answers
4k views

Benefits of Multipart Features?

Multipart points, lines, and polygons are implemented in nearly every GIS, but what benefits, if any, do they provide? In a relational database attributes shared by different features can be stored ...
20
votes
4answers
4k views

How can I generate irregular grid containing minimum n points?

Given a large (~ 1 million) sample of unevenly distributed points - is it possible to generate irregular grid (in size, but could also be irregular in shape if that is possible?) that will contain ...
15
votes
5answers
2k views

Is good database design less important for spatial databases?

I have a strong feeling that database design and normalisation often comes in second hand when dealing with spatial data. With software costing a fortune and databases with over 100 fields tables I ...
25
votes
3answers
4k views

Packing Polygons within polygon using ArcGIS Desktop?

I have a Boolean raster. In the grey areas of the raster I would like to fit a given size polygon within a contiguous extent. Basically, I have an irregular polygon, and i would like to "fit" a ...
17
votes
4answers
4k views

Seeking algorithm to place maximum number of points within constrained area at minimum spacing?

I have a polygon layer that describes a constraint; I wish to add points within this area. I want to add as many points as possible, but they must have a minimum spacing between them. Is it possible ...
12
votes
6answers
2k views

Does using RAM Disk improve ArcGIS Desktop performance appreciably?

I configured a RAM disk on a Virtual PC running ArcGIS Desktop 10 and set my HKCU\Software\ESRI\Output\TempPath to a directory on the RAM disk. It’s hard to perceive any sort improvement with that ...
11
votes
3answers
4k views

Point in polygon algorithm for multiple polygons

I've a Google map with bunch of polygons on it. Here is a problem I'm interested in: Given a lat,lng point, what's the best way to determine all the polygons that this point lies in? The obvious way ...
9
votes
4answers
4k views

Exploding overlapping to new non-overlapping polygons?

Given multiple polygons that overlap in multiple ways, I would like to export from these features all polygons that don't overlap with others, iteratively. The product would be a number of features ...
6
votes
2answers
3k views

Choosing Shapefile attribute data type to use?

I am trying to figure out when to use (in the Data Type of SHAPEFILE PROPERTIES) - TEXT - SHORT-INTEG - LONG-INTEG - FLOAT AND DOUBLE. I am using ArcView 9.3 and I know when it is all text or use ...
12
votes
3answers
1k views

How can I use ArcGIS 10.1 to find a geodesic equidistant point defined by three points?

For example, I have coordinates for three base points on a coastline and I need to find the coordinates of the point off the coast which is equidistant from all three. It’s a simple exercise in ...
11
votes
3answers
2k views

Which data format typically displays fastest in ArcMap?

My organization is working on an application running on ArcGIS Engine. Previous versions of the application used primarily Shapefiles for displaying roads, parcels, buildings, etc. Since I was ...
6
votes
2answers
4k views

For Loop - Map Algebra (ArcGIS) using Python

ORIGINAL QUESTION Im relatively new to python and these fourms but Im am having trouble utilizing for-loops for spatial analyses within ArcGIS. It does not appear to recognize the variable, ...

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