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4 votes
2 answers
2k views

Adding KML layer using ArcGIS API for Silverlight?

I am trying to create a map which will include radar rainfall data in a KML format. How can I easily do this using the Silverlight API (the version doesn't matter)?
  • 1,976
13 votes
3 answers
12k views

Creating a custom OpenStreetMap tile server

I'd like to create a map tile server based on the entire OSM planet database for a project I'm working on. I've worked with a couple of guides to try getting something up and running, but haven't ...
  • 1,347
9 votes
7 answers
6k views

Is there an existing library for converting ArcGIS Features to Json?

Is there an existing library for converting ArcGIS IFeature types to and from Json/GeoJson?
  • 1,151
6 votes
3 answers
1k views

What is ArcGIS for Desktop (and Geodatabase) equivalent to Regions of ArcInfo Workstation Coverages?

Here's one for those who've been around the block a few times. ArcInfo Workstation from days of yore had an intelligent data model called Regions or Region sub coverages. With this model one could ...
  • 27.8k
3 votes
1 answer
380 views

Geoprocessor AddMessage issue in Eclipse

I wrote the following code as a wrapper around messages pushed during the running of the script. Using Python IDLE this works fine, but in Eclipse I get the following output: def ESRIP(gp,message): ...
  • 1,174
4 votes
2 answers
25k views

How to Display Coordinates of an Existing Point Layer in ArcMap

I have been asked to provide a list of coordinates for a point layer in our GIS. I am currently using a state plane coordinate system. How do I view/list this data. Below is the data request in it'...
  • 41
6 votes
3 answers
1k views

Has anyone discovered any compatibility issues between ArcGIS 10 clients editing older ArcSDE geodatabases (e.g 9.3.x)? [closed]

I’ve read the ESRI documentation here: http://goo.gl/UUSM (link to ESRI) and http://goo.gl/TsmV (link to ESRI) , so I know the documentation states that you can. And I’ve actually edited data (a ...
  • 14.5k
10 votes
3 answers
10k views

Define "geospatial data" for a non-GIS professional

I realize this is a sort of a subjective question, but I've seen other subjective questions on the site, so I thought it I'd put it out there. A colleague recently had a request for "geospatial data" ...
  • 6,142
6 votes
4 answers
7k views

Vertically docking Tools toolbar to left of map and right of TOC in ArcMap 10.x?

In general, I really like the docking environment in ArcGIS 10. As I was showing off ArcGIS 10 to some of my end-users, I couldn't get the toolbar docked to the left of the map and to the right of ...
  • 14.5k
24 votes
2 answers
11k views

How can I find a point inside a polygon in PostGIS?

How can I find a point that is guaranteed to be within a given polygon in PostGIS? I am aware of the ST_Centroid function. However, the centroid is not always within a polygon, see below: ...
  • 9,361
87 votes
8 answers
12k 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-...
16 votes
5 answers
26k views

How can I measure area from geographic coordinates?

If I have polygons in geographic coordinates (WGS84), how do I measure the total area each takes on the surface of the earth, taking into account the curvature of the earth?
  • 16.2k
6 votes
6 answers
671 views

What Professional / Industry Associations are available that are related to GIS?

This was a well liked (but not hugely rated) question in the beta, so here goes. Please provide a brief synopsis and links if possible. I'd also like to hear about things that are in the planning ...
2 votes
2 answers
248 views

Publish a Feature class on ArcDesktop with C#?

I have a feature class in ArcCatalog. I need to save the feature class to a Map and then publish the map to the Arcserver. All programatically and hopefully in C#. I can't seem to find any examples ...
0 votes
2 answers
223 views

APDM - error exporting database from Oracle

I have a fairly large database on a slow network and I am using a third party tool to update data which calculates other fields and so on. I have a guid string with an empty box (weird glyph - seen ...
user avatar
4 votes
2 answers
3k views

Merging two polylines with programming?

We are currently working on a project where we have to merge sections (polylines) to a route, but the big question is how to do this. We have currently tried adding those two as segmentcollections but ...
  • 168
16 votes
4 answers
1k views

GIS in medical geography

I am interested in knowing about current trends in application of GIS for medical geography other than disease/epidemic mapping, heath atlas, availability of health infrastructure (hospitals, blood ...
  • 349
7 votes
1 answer
397 views

Seeking podcasts related to geospatial technologies?

I would like to make a list of podcasts related to geospatial technologies. Do you listen to any that you find interesting and informative?
19 votes
2 answers
8k views

How can I calculate the bearing between two points in PostGIS?

How can I find the bearing between two points in PostGIS? Please specify in your answer whether or not the method producing a bearing on the spheroid, or a planar bearing.
  • 9,361
262 votes
11 answers
148k views

Difference between projection and datum

What is the difference between a projection and a datum?
  • 9,361
4 votes
0 answers
534 views

Bad data beaking IRelationshipclass.GetObjectsRelatedToObjectSet

I have two workspaces - one a File GDB, the other SDE (SQL Server). Both workspaces contain the same data with the same relationship classes. When identifying features in ArcCatalog, the results ...
  • 1,151
75 votes
16 answers
10k views

Explaining what GIS is to 11 year old kid?

Well, since it was one of the highest rated proposed questions, hasn't been asked yet, and I would love to know the answer, I thought I'd ask it. How do I explain what GIS is for the 11 year old kid?
1 vote
5 answers
1k views

Store Geometry in a database with the ESRI Silverlight API

Is it possible to store geometry objects in a database using the ESRI Silverlight API? For this particular case, the client may have SQL Server 2005 installed instead of 2008 and therefore I can not ...
33 votes
7 answers
4k views

Work flow for georeferencing imagery using open source tools?

Does anyone have a recommendation for a work flow for georeferencing high resolution aerial photography using open source tools? Comparison of user friendliness and robustness between Quantum GIS ...
  • 493
6 votes
3 answers
8k views

How do I upload a Featureclass to a Geodatabase in C#?

I have a featureclass with Arcobjects that came from a Shapefile and I wish to import it into a geodatabase. I have the geodatabase connection, I just don't know how to load the feature class to a ...
8 votes
4 answers
3k views

Improving upon ArcGIS Buffer/Dissolve performance?

I'm wondering if anyone else has experienced significant performance penalties when using the ArcGIS buffer function with the 'dissolve' option on point features. My dataset is a shapefile of 260 ...
  • 2,718
10 votes
2 answers
2k views

Are there any open source mapping APIs/toolkits for drawing axes,labels,graticules etc?

I tried to post a more generic question to meta, but it's my first question, so I didn't have a reputation yet. The first question I have is whether this is an appropriate place to ask questions ...
  • 211
6 votes
4 answers
3k views

Is there a way in the Google Maps API to perform a union?

I'm looking for a way to take the overlap area of multiple polygons and work with that result as a single entity, ideally all in the API.
  • 398
2 votes
4 answers
6k views

struggling with GeoDjango install: ERROR: could not access file "$libdir/postgis-1.5": No such file

I'm installing GeoDjango on Mac OSX. I've followed the official Mac install instructions, which all went smoothly, and am now creating a spatial database template for PostGIS. However, when I try to ...
user avatar
8 votes
2 answers
3k views

Unions of polygons (Postgis ST_UNION for Geography type)

I am looking for a function that will return the intersection of 2 or more polygons (geography type). I am aware of ST_UNION, ST_COLLECT but it works only for geometry type.
  • 181
3 votes
2 answers
573 views

Identify Error with ArcGIS Server 9.3

I am receiving an error ("Error executing identify") when I try to perform an identify operation on map running on ArcGIS Server 9.3. All of the inputs appear to be correct when I check them in the ...
2 votes
1 answer
233 views

Convert from/to Macon MapKit!

We use an ancient Macon MapKit! component to display GIS maps in a Windows GUI. Does anyone know what has become of MapKit! ? All traces of MapKit! have been removed from the current GfK GeoMarketing (...
8 votes
4 answers
3k views

How to represent bimodal attribute value distributions on a map

I'm looking for a visualisation method that enables me to represent bimodal or even multimodal attribute value distributions on line features. A bimodal distribution has two different modes that ...
  • 82.9k
3 votes
3 answers
1k views

TMS tile layer in ESRI ArcGIS iOS API

Great that this forum exists now. I hope it will thrive. Let me start by saying I did ask this particular question on the official iPhone SDK forum as well. I have seen a working example of a ...
  • 1,684
2 votes
1 answer
1k views

psycopg2 error with QGIS 1.5

So I just installed QGIS 1.5 using the windows installer not the osgeo4w one and now any plugins that need access to PostgreSQL databases don't seem to work, they all throw a: "Couldn't import Python ...
  • 34.2k
1 vote
1 answer
294 views

Where is the ArcGIS ServicePackFinder 9.3 utility found?

Where is the ArcGIS ServicePackFinder 9.3 utility found? I know it's for download, but no amount of trawling can find it.
  • 1,151
13 votes
4 answers
13k views

Will ArcGIS Desktop support latest Python 2.x or Python 3.x versions?

I'm curious to know whether ArcGIS Desktop 10.0 will support newer versions of Python than 2.6. And for that matter newer versions of NumPy (ie, 1.4, 1.5 etc). I'm sure that this documentation is on ...
  • 15.5k
33 votes
12 answers
59k views

Converting shapefiles to text (ASCII) files? [duplicate]

How can I convert a shapefile (GIS) to text, or, how can I extract the information in a shapefile?
  • 431
23 votes
4 answers
53k views

Seeking Country/State/City Database [closed]

I am creating a directory which uses locations to categorize all listings. Instead of relying on user input, I'd like to provide a list of locations which the user can select. I have already tried ...
user avatar
8 votes
3 answers
3k views

Calculating Length of Linestrings in WGS84 in Miles

I have a few thousand LINESTRING features in a MySQL database. I'm trying to figure out the cumulative length of all the lines -- in miles. Using the GLength function I can retrieve the length in (...
  • 81
3 votes
1 answer
4k views

How to calculate distance between two locations using stored procedure in MySQL?

I have a database with locations with their lat and long coordinates. The area of locations is quite small with lots of them quite near each other. I'm using this stored procedure in my project. http:...
  • 33
3 votes
1 answer
458 views

How to convert SHP/POSTGIS data into x, y, z, "cost" data?

Is there a way to convert a line layer (shp or PostGIS) data into (x, y , z, cost) i.e. (From_node, To_node, optional_Elevation, Cost/Weight) ?
  • 8,461
11 votes
1 answer
1k views

Implement ArcGIS Custom Features with C#?

Is it possible to implement custom features in .NET? If so, how? I suspect the issue is being able to do COM aggregation with .NET, but I can't find anything on that ... Does anyone know if it is ...
3 votes
1 answer
878 views

Using python to access the attributes of features within the current extent?

The script I'm writing requires a specific attribute of the building polygon that the data frame extent is currently focused on. Is there a way to grab this data?
  • 7,275
8 votes
0 answers
1k views

Seeking training resources in Python as applied to geodatabase management? [duplicate]

I've taken ESRI database courses, which have been helpful to my work but I also need training in Python as applied to geodatabase management?
  • 639
2 votes
1 answer
236 views

Network Analysis Layer in ArcGIS Mobile Map Cache

Does anyone know how to extract a Network Analysis Layer into an ArcGIS Mobile Map Cache?
16 votes
5 answers
6k views

Using ArcGIS in mixed version environment?

What are some best practices for ArcGIS 9.3 and 10.0 in the same shop? We have a couple of dozen users on 9.3. The bulk of our data is in file geodatabases and geotiffs, with a respectable splash of ...
20 votes
7 answers
5k views

Code-completing/auto-completing ArcPy scripts using Notepad++ (external editor)?

I have been scripting in Python for ArcGIS 10, and so far I have just been using Notepad++. I like how the Python command line interface code-completes arcpy functionality for you, showing you your ...
  • 7,275
5 votes
2 answers
295 views

Is the order in which ArcMap loads Extensions, Toolbars and Commands defined?

When you extend Esri's ArcMap with both an Extension, a Toolbar and a number of Commands, is the order in which these categories are loaded by ArcMap well-defined? (I.e. are Commands always loaded ...
  • 861
21 votes
6 answers
9k views

Documentation for ArcPy site-package?

Has anyone found any informative documentation about Esri's ArcPy Python module?

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