4
votes
6answers
3k views

shadow simulation from buildings [duplicate]

is it possible to use hillshade function in ArcMap to calculate shadow areas of buildings or simulate shadows of buildings, using DSM of the buildings and the sun angle and azimuth?
-7
votes
3answers
1k views

Delivering map tiles in real-time without caching? [closed]

Is it possible to deliver map tiles quickly over the web without worrying about caching or seeding them? With raster map engines this is a problem because endering raster tiles is resource consuming. ...
4
votes
3answers
535 views

Setting defaults in the 'Select By Attribute' SQL editor

Is there a way to set default values in the 'Select By Attribute' SQL editor (the where clause) ? I want to set a permanent value that will appear every time I enter the 'Select by Attribute' window, ...
4
votes
1answer
906 views

Is there a TOC control available for Esri's Silverlight/WPF SDK?

I've got a requirement calling for a TOC control on a Silverlight/WPF application. Does anyone know of a TOC control (analogous to the TOCControl in ArcEngine) that I can hook into Esri's Map ...
21
votes
9answers
3k views

Are North Arrows Pointless?

A recent post on Cartastrophe refers to a "Worldwide Campaign to Eliminate Needless North Arrows." So when, if ever, are North arrows necessary? As an interesting aside the concept of North being ...
35
votes
3answers
32k views

What is the difference between WGS84 and EPSG4326?

What is the difference between WGS 84 and EPSG 4326? It seems like for a given dataset it might be both WGS 84 and EPSG 4326.
5
votes
1answer
419 views

How can I pass a WorkspaceName to another thread for opening?

My winforms app gets an IWorkspaceName from an IDatasetName via the GxObject selected in a GxDialog. I want to pass it across to a worker thread for opening. I know how to write multithreaded ...
2
votes
2answers
1k views

ArcGIS Server Object Extensions - Visual Studio Templates

The Visual Studio Templates for ArcGIS Server Object Extensions show up correctly in VS 2008, but not in VS2010. Is there an easy way to resolve this? Outside of copy and pasting code from VS2008 ...
4
votes
2answers
2k views

FME - How to convert string represenation of date to a date format that SQL Server will accept?

I have dates in the form of 07-28-2010 I am extracting from DWG filenames. I need to push these to a DateTime formatted table in non-spatial SQL Server 2008. SQL Server doesn't like them as strings ...
2
votes
1answer
601 views

ArcGlobe .3dd file doesn't display

Has anyone seen the following problem? I've created a sample ArcGlobe application with Visual Studio - this obviously gives me the template where I should be able to launch the app. Said application ...
2
votes
1answer
504 views

How do I install ArcGIS Developer help in Visual Studio Express 2008?

I would like to install ArcGIS 10 Developer help in VS Express (2008) so that it works with the F1 key. Is it possible? How?
9
votes
1answer
2k views

Tiled Map Services from Geowebcache in QGIS?

Can QGIS consume Tile Map Services from GeoWebCache? I know there is a article on the QGIS website which states that it does support tiled map services but it lists Tile Cache from Meta Carta labs ...
2
votes
2answers
551 views

ArcGIS Server Object Extension for Analyzing Linearly Referenced Data

I have just begun learning about the ArcGIS Server Object Extension (SOE) capabilities, specificially with ArcGIS 10. Is there an example available of an SOE that can return information about ...
41
votes
10answers
6k views

What is the most useful spatial R trick?

R is becoming pretty strong tool for handling and analyzing spatial data. I learned some useful things through questions like these at SO and thought it might be useful to have something simmilar, but ...
10
votes
12answers
6k views

DBF creation and manipulation without excel 2003

My company just upgraded to Office 2007 and now I am no longer able to easily manipulate and create dbf's. I do not understand MS's decision by removing this capability but alas there is no use ...
15
votes
0answers
656 views

Hidden Features of ArcGIS [duplicate]

ArcGIS is one of the most popular software-packages available for GIS. What are the lesser-known but useful features of the ArcGIS? Which little/hidden tricks do you known that make your experience ...
-5
votes
1answer
879 views

Geoportal examples: Commercial vs Open source [closed]

What geoportals do you know built in commercial environment (ESRI ArcGis Server, Intergraph) and what do you know built with Open Source solutions (like geoserver, mapserver + Open layers)?
7
votes
2answers
895 views

Remove ESRI logo from map with Silverlight API v2.1

Is there a way to remove the ESRI logo from the map display with the ESRI Silverlight API v2.1. This was possible in the 1.x version, but the old method no longer works.
8
votes
3answers
1k views

Embedding dynamic maps into PDF files?

Working in consulting, I found that sending clients PDF file with my embedded maps is one of the best ways to achieve a wow-effect from them. The latest pdf file formats all support the layers ...
2
votes
2answers
484 views

What sites discuss Geomedia products?

Do you know about any site where there is any discussion on Geomedia products (besides Intergraph Synergy site which is not very active lately)?
6
votes
3answers
1k views

Troubleshooting slow data access to shapefiles by ArcGIS Desktop?

We have just upgraded from ArcGIS Desktop 9.2 to 9.3.1 For a ~250MB .shp in 9.2 it took 1 minute to render, at 9.3.1 it now takes 50 minutes. The format has to stay as shapefile. The data is stored ...
4
votes
2answers
6k views

Error accessing spatial database connection with ArcGIS 10

I set up a new SDE database with ArcGIS 10 and everything appeared to go correctly. The service is running and I'm able to view the database in SQL Server. However, when I try to access the spatial ...
5
votes
5answers
1k views

Data Source: Address ranges for every block in NYC

I'm looking for data that defines the address ranges used on NYC blocks. On this screenshoot you can see google has noted the first addresses on each block of West End Avenue and 92nd/93rd/94th st. ...
14
votes
2answers
4k views

Using Geodesic Measurements for Circle Radii?

I am currently developing an OpenLayers mapping site. Measurements can be made using a line tool, and an area tool. Both of these are currently set to calculate geodesic measurements as outlined in ...
0
votes
1answer
312 views

Convert geodata from .rdb and .mpr files

I've got an COM-server and activeX client (looks like delphi app), that display some geodata. Data stores in files with .rdb and .mpr extensions. I find out that rdb is oracle database file format. ...
62
votes
8answers
6k views

How do I get started with PostGis

I have been reading a lot about it, but I am struggling to find a good beginner's guide. Which tutorials/books do you recommend? My past experience involves python and arcgis. But I have never worked ...
12
votes
6answers
785 views

PostGIS: Assign ID of point in layer A to closest point in Layer B

This should have been an obvious precursor (that I didn't ask) to my other question: PostGIS function to create spider diagrams? If I do not know the relationship between a point in layer A (stores) ...
4
votes
2answers
257 views

Viewing current users of map (mxd)?

Is anyone aware of a script or tool that would allow me to view what users have a paticular mxd open at one time? We are using ArcGIS Desktop 9.3.1.
18
votes
6answers
451 views

The general public and their ability to use GIS applications - do we still need paper maps?

I am endeavouring to convince others in my organisation that GIS tools, in particular digitising tools, CAN be used by the general public and we should promote their use instead of using paper maps. ...
4
votes
2answers
755 views

Including polygons as part of network for ArcGIS Network Analyst?

I am creating a pedestrian walking network of a downtown area. I am digitizing line segments for paths and sidewalks, but I need to incorporate parking lots into my analysis. So far, I have been ...
13
votes
8answers
4k views

ArcObjects Resources

What are the best books/web sites for C# development with ArcObjects? The ArcGIS Resource Center is very helpful, but I am trying to find sources with more examples. Thanks
8
votes
4answers
4k views

How to find the minimum edge to edge distance of polygons?

I have a a map of about 3000 polygons in ArcGIS 10. I'm looking to find the distance between each one of them. I know how to do it using the lat and long coordinates of the centroid, but I'm looking ...
5
votes
1answer
716 views

Why is SymbologyControl missing symbols in XP?

I'm using the the code form SymbolForm.vb in this sample: Change layer rendering using the SymbologyControl It's working great on my developer machine with Windows 7, 64bit. But when I deploy the ...
5
votes
4answers
6k views

Field Calculator syntax

I can't get the syntax correct for a fairly simple if statement. Right now it looks like this: dim Output as Integer If [HECTARES] >= 30 AND [HEIGHT] >= 17 AND [CROWN] >= 59 THEN Output = ...
4
votes
5answers
394 views

How do I find software for my GPS?

I recently unearthed a GPS unit I purchased a few years. It's a Garmin GPSmap 60 (picture) and has a usb port on it. Is there a way that I can link it to my mac? I do have windows installed also, and ...
9
votes
3answers
2k views

How can I speed up slow-loading, template-generated MXDs?

I have an ArcMap template (.mxt) file which causes .mxd documents created with it to take 5-10 minutes to load (if it ever loads). Even after stripping out all the data sources and tables, the issue ...
5
votes
3answers
759 views

How do I get a json list of REST SOE's supported by a Mapservice?

The html returned by a rest mapservice url includes "supported extensions" down at the bottom. However the json returned does not list the extensions. Is there a way to get this list of SOE's in a ...
23
votes
7answers
1k views

What tools for regionalization/redistricting can you recommend?

I am looking for tools for regionalization / districting in GIS. So far I have been able to identify Districting ArcGIS extension (now also online) REDCAP (currently limited to 50k input polygons) ...
28
votes
12answers
991 views

Can you point me to an example of a modern-day John Snow?

It's became pretty much a custom to start spatial epidemiology or medical geography textbook / lecture with an example of John Snow's cholera investigation in 1854 Soho. He's definitely still ...
3
votes
1answer
316 views

Getting ArcGIS.com-created map to show up in sample app

I've been experimenting with the My First iOS app example, trying to get it to display a Bing map layer I created on ArcGIS.com. However, the layer doesn't display. In the sample app's code, when it ...
7
votes
3answers
3k views

Problems setting up eclipse (with PyDev) for ArcGIS 10

I'm trying to use eclipse with PyDev to program in python. In Windows 7 x64, I've added a PATH environmental variable (PATH C:\Python26\ArcGIS10.0\python.exe;) and what I thought were the relevant ...
4
votes
2answers
311 views

Convert IEnvelope - ArcMapControl to X,Y screen coordinates

Does anyone know how to do the following. Say I have a map and I draw a rectangle over the state of Texas. ArcMapControl.TrackRectangle returns the lat,lon of this. However, what I'd like is to ...
5
votes
2answers
995 views

How do you connect to a SDE instance on EC2?

We are exploring using Amazon EC2 with ArcGIS Server - and none of us has any experience with it. The question "How can we, from within our intranet, connect to the remote SDE instance in the EC2 ...
6
votes
3answers
1k views

Thematic Legends in MapInfo

Does anyone know if it is possible to make a range label go over more than one line in MapInfo when doing thematic maps? My legend has a limited width and I have not been able to find a way to get ...
10
votes
3answers
5k views

How to merge two 'incompatible' polygon layers in ArcGIS?

I have two layers of polygons with administrative boundaries. Although they come from the same data provider, they seem to have small discrepancies and do not 'fit' each other. How could I merge ...
4
votes
2answers
682 views

Does GeoServer and/or MapServer have a services directory similar to ArcGIS's services directory?

Does GeoServer or MapServer have anything analogous to the ArcGIS Server services directory? Is there a convenient endpoint where you can see all the services hosted on a particular machine? Edit: ...
10
votes
4answers
3k views

Best practicies when employing a file geodatabase that is going to be used and edited by multiple users?

I have a file geodatabase that contains 3 feature classes in it and each feature class contains a lot of data that will be viewed and edited daily by 6 other users. I am looking for any advice from ...
4
votes
1answer
378 views

How do I disable the Add Spatial Database Connection function in ArcGis?

Is it possible to remove/disable the Add Spatial Database Connection and Add OLE DB Connection functionality from ArcMap and ArcCatalog? Ideally the end user could hit the Add Data button, and the ...
4
votes
1answer
1k views

GeoDjango: order PointField by distance?

I've got a GeoDjango model as follows: class City(models.Model): id = models.IntegerField(primary_key=True) county = models.ForeignKey(County) location = models.PointField(null=True, ...
8
votes
2answers
245 views

Is it common to save geographic coordinates in minutes instead of degrees?

Are there any communities or fields where it is common to save geographic coordinates in minutes instead of degrees? (I just received a batch of addresses referenced that way and it made me wonder.) ...

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