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15
votes
4answers
2k views

What are the pros and cons of running on a windows server vs. a linux server?

We're in the process of trying to decide where to host our GeoServer installation in production. Are there any major pros or cons of hosting on windows vs. linux?
3
votes
1answer
2k views

Data dialog to select Geodatabase

I need to create a dialog that the user can select a proper Workspace. Is there a similar to IAddDataDialog, but for workspaces?
11
votes
4answers
7k views

Uninstalling ArcGIS extensions from earlier version after ArcGIS upgraded?

I uninstalled ArcGIS 9.3.1 (server, desktop, engine), then installed ArcGIS10.0 (Server, Desktop, engine). When I tried to uninstall some arcmap extensions, I got error 1001 "unable to get installer ...
12
votes
4answers
971 views

Legal issues with tracing a map from an image

Client "A" provided a paper copy map of certain routes. The owner of the map (map creator) wants to sell the SHP file Looking at the map, I figure it'll take me an hour tops to digitize the thing Are ...
5
votes
2answers
2k views

How to delete a broken index in SpatiaLite?

I managed to screw up an index in my SpatiaLite database. The index was created using spatialite-gui. In the meantime, I deleted the original table and three out of four index files: ...
1
vote
2answers
1k views

Getting the correlated FeatureDataRecord (or metadata) for a given geometry?

I'm using SharpMap 2.0, and I'm successfully loading a shapefile and parsing through it. The particular shapefile that I'm working with has about 700 polygons in it, and each of those polygons has ...
3
votes
1answer
539 views

Runaway memory usage with Event Layers in ArcGIS Engine and Desktop?

I have an ArcEngine application, based off an MXD with an axMapControl. Several of the layers in the map are event layers built with XY data in a SQL table. It has routing info applied from a ...
9
votes
0answers
10k views

Converting shapefiles (SHP) to KML [duplicate]

Possible Duplicate: Converting between KML and shapefile (SHP) format I have SHP files, I want KML files, what tools can convert?
25
votes
5answers
5k views

Rendering overlapping lines

I am making a map containing information about public transportation: busses, trams, etc. The map will have a layer containing for example the tram lines. Each line has its own colour, and is ...
7
votes
2answers
448 views

What are "M" point locations on the NOAA forcecast cone map?

I don't think I've ever noticed M before. H and S are Hurricane and Tropical Storm.
0
votes
3answers
3k views

How do i popup a context menu with custom command items in a Select tool OnMouseDown (Right Click) with VB .Net?

This should be simple... I am converting VBA customization to VB .NET in VS 2008 Express Edition. In VBA i have a custom selection tool. Aside from just selecting features, when OnMouseDown receives ...
3
votes
3answers
1k views

Drawing selection custom selection box using ArcObjects?

I have some code that I'm using to selecting features in a certain extent. I already rigged the tool properly, so it selected the objects as needed, but I want to draw interactively the selection box ...
4
votes
3answers
49k views

Getting address or location from Google Maps?

How can one get the street address and/or coordinates of any location on Google Maps with a minimum of fuss? Google Calendar will spawn a window with a map to the location one specifies in the "where"...
17
votes
3answers
7k views

Using ArcPy to get layer symbology?

Since ArcGIS 10 comes with the ArcPy package, I'm wondering it is possible to use ArcPy functions to get Symbology (i.e color, width...) of a layer?
11
votes
4answers
14k views

Character encoding support in geodatabases and shapefiles

I've got several geodatabases that include feature classes with Greek letters in a lot of the attributes. When I try exporting a feature class as a shapefile from ArcCatalog, the attributes are ...
11
votes
1answer
3k views

How to disconnect all open GDB locks in ArcMap?

I am having trouble releasing GDB locks in ArcMap 9.3. Does anyone know a way to disconnect from all open GDB connections in ArcMap 9.3. I could close and re-open arcMap, but that seems to be a ...
4
votes
1answer
2k views

Using PostGIS with Rails

I'm new to postGIS, and am looking to use a spatial database with my Rails app (specifically, to retrieve points from the database that are within the bounding box of a Google Maps viewport). I posted ...
5
votes
2answers
4k views

How to use Lists with ArcGIS ModelBuilder?

The ArcGIS ModelBuilder is nice to work for when dealing with single input/outfiles. When I want to use the List option (As to, for example, Clip several layers using the same clip feature layer), I ...
8
votes
2answers
1k views

Splitting polylines using regions with PostGIS

I was wondering if it is possible to split a polyline on polygon boundaries (regions) in PostGIS, the picture below is of what we have at the moment and showing where I need the polylines split: Lets ...
17
votes
4answers
2k views

Switching career from web application to GIS developer?

I am a software developer with over 20 years building applications mostly in the web application space for various companies. I am trying to get a foot hold into the GIS software development space ...
8
votes
1answer
2k views

PostGIS 3D in Action

I was wondering if there is a website that showcases Openlayers and PostGIS 3D in Action
2
votes
2answers
329 views

.NET Components triggering ITools on ArcEngine/Objects

I'm building a simple map interface on a .net component that I need to redistribute around. Well, my initial thoughts was to create the tools just the way I'm used to do it in ArcMap, inheriting ...
0
votes
3answers
249 views

Length of forms in ArcPad10

I'm trying to create a survey with about 250 questions in ArcPad 10. Normally you would expect that a form you created in any application will be able to scroll in PDA if it is too long. But the ...
4
votes
3answers
2k views

Is there a way to "disperse markers" across multiple point layers?

I have a bunch of point layers which often have overlapping features. The disperse markers geoprocessing tool works within a layer but is there a way to do it across more than one layer, so none of ...
7
votes
3answers
335 views

Custom, low-level representation of streets and traffic rules

I'm new to GIS, and I'm still trying to gain an understanding of what can be represented in the various GIS files. Very generally I know(/think) that you can represent points, that lines, polylines, ...
6
votes
3answers
18k views

Alternative to ArcGIS Desktop for software development? [closed]

I'm looking for a free and reasonably licensed alternative to ArcGIS Desktop (or maybe just ArcGIS Server). I'm quite new to GIS, so I'll state some of the things I want to be able to do and you can ...
3
votes
4answers
1k views

Debugging DLL (ArcGIS tool) with Visual Studio 2008 Express?

As per Esri's recommendation I began the process of converting my existing VBA customization into VB .Net Express edition. I was surprised to realize that debugging a DLL is not an option in the ...
7
votes
4answers
289 views

Case studies of Participatory Spatial Planning

I am wondering if you know any well implemented geoportals for Participatory Spatial Planning. I am looking for the one related to environmental protection or connected somehow with the topic (but of ...
9
votes
7answers
921 views

Seeking highly customizable GIS platform? [closed]

I was educated in GIS using ArcGIS (Desktop and Workstation) and researched with it with (very) short peeks at MapInfo and uDig . During that time, I was satisfied with the program as I used ...
11
votes
5answers
34k views

Snapping points to lines in ArcGIS Desktop and automate using VBA?

I use ArcGIS Desktop and I want create a network with a point feature and a line feature. I need my point features to be on the line features so I should do Snap point to line. However, I do not ...
10
votes
2answers
2k views

How to unit test ArcObjects with Mocking?

I'm a huge fan of unit testing, but still make use of a FGDB to grab features for running unit tests against when using the ArcObjects framework. Is anyone successfully using mocking against thinks ...
26
votes
3answers
22k views

Is there a dissolve function in PostGIS other than st_union?

I'm looking for a function to dissolve shared boundaries between polygon features in a table. ST_UNION() almost does what I'm looking for, but it creates a multipolygon from all polygons in the layer ...
10
votes
2answers
462 views

Tools for importing historical maps into modern GIS systems?

What tools exist to derive geometries for use with modern GIS systems from older scanned maps? I am referring more to libraries that generate actual data rather than present an interface for ...
7
votes
1answer
1k views

How can I change the class of one pixel in a classified image?

I have a classified image (I did it in ERDAS) with six categories. There are some misclassified pixels (especially high-density urban category). Is there any way that I can choose one pixel and then ...
1
vote
1answer
274 views

API to build GoogleStreet-like photo maps

Do you know if Google offers a public API to display pictures in a map as they do with Panoranio? Just to be clear, I don't want to use Google Street, or publish my pictures anywhere in the Internet, ...
11
votes
3answers
3k views

Rendering images in OpenLayers?

My organization has a web application for displaying global and regional climate data and we're considering improvements to it. Our leading idea is to create an OpenLayers-based application to ...
28
votes
6answers
8k views

Good websites for map-lovers?

I often visit strange-maps, cool-maps, makingmaps and hipkiss.org. Do you know of other good websites for map-lovers?
10
votes
3answers
9k views

How does ArcGIS compute the distance between two points with a non-equidistant projection?

This is a follow-up question to my previous one, Can you suggest some well-written introductory texts about coordinate system projections? Let's assume I'm working with the CH1903 map projection, ...
4
votes
1answer
4k views

Connecting to WMS, but only getting blank pages

I have a problem connecting to my WMS service. In ArcMap I can connect but, what I see is only blank page (cannot see the layers). In QGIS it also connects with service but when I choose add ...
2
votes
1answer
442 views

How do I calculate curvature using GIS co-ordinates [closed]

I have GIS data for which I would like to calculate where curvature is present. Anyone has done this before, please help.
1
vote
1answer
956 views

I want create a crystal report in gis with writing code

I am working in ArcGIS 9.3.1 and I try to write code for creating a crystal report and work with it in VBA, but I recieved an error when the program arrived at this line of code: Dim pProj As ...
6
votes
1answer
4k views

GRASS GIS: How do I run a batch (bash?) script?

I am in a GRASS database (in command shell), where I want to run a loop function. For example, I want to do an operation on many raster files that are in the database. I know this must be done through ...
3
votes
2answers
2k views

in seach of gps tracking (web) service to use with rails web app

hey out there GISers, i am looking for a gps tracking service i can hook gps devices into and request their infos via a ruby on rails webapp. does anybody know some? any help is appreciated! thanks, ...
22
votes
3answers
5k views

Using R with ArcGIS Desktop?

I've used the integration of R with QGIS, and found it a very uesful tool. Having taken a look at the R toolbox extension for 9 and the extension for 10 it appears they both offer only point ...
4
votes
4answers
996 views

OGR OVF has no identified FID column

I have an OVF layer defined as follows: <OGRVRTDataSource> <OGRVRTLayer name="UserPoint"> <SrcDataSource>ODBC:un/pw@CLO</SrcDataSource> <SrcSQL>...
2
votes
3answers
420 views

UK National Grid references and GeoDjango

Newbie question. I'm trying to insert some UK National Grid references into a Django PointField defined as follows: oscode = models.PointField(srid=27700, null=True, blank=True) My question is this:...
2
votes
3answers
5k views

How do I create forms using Geodatabase's related tables in ArcPad Studio 10?

I have a Geodatabase with a Points table and number of related tables. The reason for the related tables is because of the large number of fields. The relationships are reconginsed by ArcGIS and ...
16
votes
7answers
9k views

Bulk field renaming in file geodatabase? [duplicate]

I have a file geodatabase with several hundred feature classes in it. Some feature classes have a field that got named incorrectly, and it got named "SCHEMA_FEATURECLASS_ENTITY" instead of just ...
2
votes
1answer
840 views

Preventing polygon symbology from rotating with data frame when switching between map sheets in map series?

I am using ArcGis 9.3, Windows XP and want to know if it's possible to have symbology in my polygons not rotate with data frame when I switch between mapsheets in my map series? I do NOT have ...
9
votes
5answers
4k views

How can I find positions on my land?

I have about 2 acres of land, wooded and brushy. There was a survey and the corners have rebar. I am working on a site plan for house construction. I have two related problems: Finding a spot on the ...

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