8
votes
1answer
1k views

PostGIS 3D in Action

I was wondering if there is a website that showcases Openlayers and PostGIS 3D in Action
2
votes
2answers
267 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
241 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 ...
3
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
260 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
4answers
9k views

Alternative to ArcGIS Desktop for software development?

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

How can I debug a DLL (ArcGIS tool) with VS 2008 Express?

As per ESRI's recommendation I begun the process of converting my existing VBA customization into VB .Net Express edition. I was surprised o realize that debuggin a DLL is not an option in the express ...
7
votes
4answers
261 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 ...
8
votes
7answers
807 views

Are there any “highly customizable” GIS platforms?

I'm new to this site which I find useful and refreshing until now. And to my question ( WARNING: it's a bit long, so you can skip right to the question two paragraphs down). I was educated in GIS ...
8
votes
5answers
16k 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
1k 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 ...
13
votes
3answers
8k 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
388 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 manually ...
7
votes
1answer
803 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
234 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, ...
10
votes
3answers
2k views

Can one render maps from 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 ...
26
votes
15answers
3k views

Good websites for map-lovers?

Do you know some good websites for map-lovers? I often visit strange-maps, cool-maps, makingmaps and hipkiss.org. Do you know others?
9
votes
3answers
6k 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
3answers
3k views

Connecting to WMS - problem

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 layers i ...
2
votes
1answer
367 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
813 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 ...
2
votes
1answer
2k 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
803 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, ...
14
votes
2answers
3k views

Using R with ArcGIS Desktop

In response to comments below, a re-phrasing of the question. 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 ...
2
votes
4answers
531 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> ...
2
votes
3answers
330 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 ...
2
votes
3answers
4k 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 ...
14
votes
7answers
6k views

Bulk field rename in file geodatabase

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
500 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
1k 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 ...
3
votes
3answers
2k views

Can you programmatically change the button image for a ESRI.ArcGIS.Desktop.AddIns.Button?

I'm new to the AddIn customization model in ArcGIS 10 and I'm trying to figure out how to change a button image for a button. I'm looking for the equivalent to the BaseCommand UpdateBitmap method and ...
7
votes
4answers
11k views

Arcgis Server vs Open Source software [closed]

What do you think what are the advantages and disadvantages (of both)? Of course appart from fact that open source software is free to use. I mean rather somethink like capabilities, functionality, ...
1
vote
1answer
122 views

threading attribute table in ArcMAP

Is there a way to put ArcMAP's attribute table on a different thread or processor?
0
votes
2answers
567 views

Bug in ControlMapMeasureTool? “Measure An Area” creates a duplicate dialog in ArcGIS Engine 10

When we add a measure tool to the AxToolbarControl through the properties dialog, we can change to measure lenght and area in the dialog that pops up. But when we add a ControlsMapMeasureTool through ...
0
votes
2answers
298 views

How to quickly show areas on a map (with openstreetmap?)

yesterday I wanted to quickly indicate some areas (lat/lon rectangles) on a map, like openstreetmap. And I couldn't figure out how to do it. Any suggestions? It doesn't have to be interactive, just a ...
4
votes
3answers
2k views

Show progress i ArcGIS Engine 10 application

I would like to add a progress indicator to our ArcGIS Engine application. Like a progressbar in the statusbar to show when the MapControl is busy getting or drawing the map. I've been trying to find ...
3
votes
2answers
413 views

Mapserver / Default to a GetCapabilities version if not set

We have some users with a legacy client that does not use the "version" parameter in the GetCapabilities request. However they cannot handle WMS 1.3.0 (and the CRS parameter) yet, which our ...
7
votes
4answers
589 views

MS SQL Spatial as Central Datastore?

I've been working on opening up our spatial data from a proprietry system to one that can be read by more products (MapGuide, ESRI, gvSIG, Map3D etc....) I've decided on using SQL Spatial as we have ...
4
votes
6answers
1k views

Measuring data load and redraw times in ArcMap?

Rephrasing of the question slightly to address some issues. Is there are standard way of measuring load times for data, specifically sybolised data, within ArcMap? In particular, we're comparing ...
6
votes
5answers
5k views

How can I export a sketchup Model to ArcGIS's Multipatch?

I have a very large model made in Google Sketchup v 7.1. I would like to export this to a Multipatch featureclass, so that I can view it in ArcScene, with other 3D data. I have tried several things, ...
3
votes
2answers
252 views

Can ArcHydro Tools be used on a network in an SDE enterprise geodatabase?

Most of the documentation for ArcHydro Tools discusses their use on data in ESRI's personal and file geodatabases. Is it possible to use ArcHydro Tools to set network flow direction on a networked ...
13
votes
8answers
1k views

Is there a smartphone app for mobile asset logging?

I'm after a recommendation for a smartphone app (iPhone or Android) to log asset information for litter bins. I need the following features GPS geotagged photos Form with drop down menus for user ...
1
vote
2answers
717 views

Projected layer misaligned with Mapserver

I have a couple or raster files in epsg:23031 reference that i want to reproject to other reference systems (epsg:4326 and google projection) using the 'on the fly reprojection' of Mapserver. No ...
4
votes
2answers
848 views

ArcSDE 10 and PostgreSQL 8.3 vs 8.4

We have recently upgraded our ArcSDE 9.3 instance to ArcSDE 10. I was hoping to upgrade postgresql 8.3 to 8.4 at the same time. Although ArcSDE 10 supports 8.4, it turns out that the ArcSDE wizards ...
16
votes
8answers
473 views

Can you suggest some well-written introductory texts about coordinate system projections?

Even after some time working in this GIS field, I still don't have a solid understanding of spatial references, how they are projected, and most importantly, if you still need to worry about the fact ...
1
vote
2answers
379 views

Positional changes bewteen MapInfo 7 and 10

I have just come across something bizarre and I can't explain it. I have programs for creating grid squares and for converting points to polygons based on an OS grid reference [GB BNG]. Recently we ...
3
votes
1answer
951 views

Interacting with the Map after selecting a button/tool

I am using the ESRI Javascript API 2.0 and Dojo dijits. Does anyone know how to wire up a dojo button (or toggle button) in a toolbar to a mouse click event on the map? I want the user to have to ...
31
votes
12answers
7k views

What is the state of the art in html5 geospatial applications?

I am very interested in the html5 canvas element for maps; work like Cartagen from an MIT Media Lab researcher looks very promising, for example. There is some interesting SVG based work at ...
6
votes
1answer
708 views

Help simplifying multipolygons in geodjango

I have a few multipolygons that have several hundred points in them. I'm looking to create less complex "thumbnails" polygons. Naturally I'm attempting to use the simplify method, which is supposed ...
4
votes
1answer
908 views

Geo-Tagged Tweets and Twitter API

When I do a timeline query using the Twitter API... http://api.twitter.com/1/statuses/user_timeline.xml?screen_name=MyTwitterName The geographic component of the reply looks like this: ...

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