3
votes
2answers
318 views

How to attribute lines with Ids of touching polygons?

I have two shapefiles: one contains streets of a city and one contains blocks (i.e. polygons bounded by the streets). I would like to have the streets attributed with the id of the left and right ...
28
votes
5answers
2k views

Does ArcGIS for Desktop support SpatiaLite?

SpatiaLite is playing an increasing role in my organization. As it stood in 2012, using SpatiaLite alongside ArcGIS Desktop required an amount of importing and exporting of data that was not always ...
4
votes
6answers
1k views

flex/AIR based SLD generator?

Styling layers in GeoServer can be tedious to say the least. While Styler can relieve some of that tedium, it doesn't yet work in chrome. It can wreck existing styles if not carefully used and still ...
8
votes
3answers
2k views

How to emulate Google Maps driving directions using pgRouting?

Would like to emulate google maps' driving directions functionality but use pgRouting instead. google's data over the project area & scale is quite a bit off so we want to use our own transport ...
1
vote
1answer
99 views

How to reference vector based data to raster data that already has spatial reference in MAPublisher?

I have been able to load in raster data into MAPublisher and properly registered it, however I have been having trouble with a further step. I am trying to reference vector data that has no GCS or ...
3
votes
4answers
3k views

Live KML from PostGIS to Google Earth

I was wondering if anyone knew a way to bring data from a postGIS database into Google earth to view live. I know of the asKml function in PostGIS, but I'm interested to know if anyone had managed ...
1
vote
1answer
453 views

How to bring georeferenced raster data into MAPublisher?

What is the appropriate method to import a georeferenced raster image into MAPublisher? I have been able to import other forms of map data, and created map views and such for them, but I am now ...
7
votes
7answers
885 views

List of Virtual Globes

I kept a listing of virtual globes in 2005 and 2006, but it's now woefully out of date http://geography2.blogspot.com/2005/11/listing-of-virtual-globes.html. Today, the main four seem to be: Google ...
0
votes
1answer
127 views

How can I retrieve an attribute's domain using ArcIMS ActiveX Connector?

I have an ArcIMS Image Service that's consuming data stored in an ArcSDE database (both v9.3.1). Many of the layers have attribute columns that use coded value domains defined in the SDE database, ...
8
votes
4answers
1k views

Looking for a fast, open-source raster cost-distance function to use in code

I've been scouring the internet for a fast, open-source cost-distance function that I can embed inside my code. The functionality should basically work like the ArcGIS implementation where I can ...
29
votes
8answers
3k views

Representation of network flows

This is a sample transportation network flow I've done a year ago based on 26 zones. For a project I'm working on now, I need to represent the flows over 1,000 zones with directionality. Any ...
7
votes
5answers
249 views

What are the concerns with using Creative Commons licenses for spatial data?

As more people and organizations are realizing the importance and benefits of publishing their data under an 'open' license, people are looking for the best license to apply. Creative Commons CC ...
5
votes
6answers
2k views

What are some web based clients for GeoServer?

There is a list of Web Clients for Geoserver on the Geoserver site (http://geoserver.org/display/GEOSDOC/Clients). Unfortunately, it is posted as no longer maintained. Does anyone have a current list ...
6
votes
2answers
2k views

OpenLayers filter: OGC (xml) or CQL?

While having not used filtering that much in OpenLayers, we are discussing which type of filtering we should use: The OGC XML filter or the more simple CQL filter? Are one of them more appropriate ...
3
votes
5answers
2k views

Ways to load OS VectorMap data

Us lucky fellows in the UK have been able to access public geodata from Ordance Survey under an open licence since April this year. Some of the datasets, including VectorMap, are broken into 100 ...
9
votes
5answers
1k views

How to convert line simple features to topological network?

using Gdal/ OGR is there a way to convert a shp, kml, or PostGIS line layer into a network of nodes and segments so it can be used in packages such as networkx?
1
vote
1answer
328 views

Requirements for BaseCustomLayer in ArcScene?

What must be implemented/included to add a layer deriving from BaseCustomLayer to ArcScene? I have had success adding a BaseCustomLayer to ArcMap by implementing Draw, AreaOfInterest, Cached, ...
3
votes
2answers
1k views

How do I add a KML layer using the ArcGIS Silverlight API?

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)?
11
votes
3answers
7k 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 ...
9
votes
6answers
3k 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?
6
votes
3answers
717 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 ...
2
votes
1answer
350 views

AddMessage issue

I wrote the following code as a wrapper around messages pushed durring the running of the script. Using Python IDLE this works fine, but in eclipse I get the following output: def ESRIP(gp,message): ...
4
votes
1answer
7k 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 ...
7
votes
3answers
1k views

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

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 ...
10
votes
3answers
3k 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" ...
5
votes
3answers
4k views

In ArcMap 10.0, how do you vertical dock the Tools toolbar to the left of the map and right of the TOC?

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 ...
16
votes
2answers
4k 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: ...
53
votes
7answers
5k views

What are some best practices for managing large amounts of geospatial data?

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 ...
11
votes
5answers
5k 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?
7
votes
6answers
261 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
2answers
229 views

Publish a Feature class on ArcDesktop with C#?

All, 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 ...
0
votes
2answers
175 views

APDM - error exporting database from Oracle

I have a farily large database on a slow network and I am using a thrid party tool to update data which calculates other fields and so on. I have a guid string with an empty box (weird glyph - seen ...
3
votes
2answers
1k views

How to merge two polylines in code?

We are currently working on a project where we have to merge sections (polylines) to a route, but the big question is how you do this. We have currently tried adding those two as segmentcollections ...
14
votes
4answers
717 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 ...
6
votes
8answers
222 views

Podcasts related to geospatial technologies

Here I would like to make a list of the best podcasts related to geospatial technologies. Do you listen to any? Do you find them interesting and informative? One podcast per answer, please.
15
votes
2answers
3k 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.
128
votes
12answers
30k views
4
votes
0answers
313 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 ...
55
votes
19answers
4k views

How do I explain what GIS is for the 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
5answers
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 ...
24
votes
7answers
2k 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 ...
4
votes
3answers
5k views

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

All, I have a featureclass with Arcobjects that came from a Shape file 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 ...
5
votes
4answers
2k views

How to improve 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 ...
8
votes
2answers
777 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 ...
5
votes
4answers
804 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.
2
votes
4answers
3k 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 ...
6
votes
2answers
1k 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. Any tip will be really ...
1
vote
2answers
470 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 ...
1
vote
1answer
191 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
4answers
2k 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 ...

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