23
votes
8answers
2k views

How to generate a random but believable digital elevation model?

Is there a way to generate a DEM, programatically or otherwise (arcpy or R?), that will feed into ArcGIS for further spatial analysis? Perhaps this needs to be broken down into smaller incremental ...
3
votes
2answers
1k views

Geoprocessing ArcGIS 10: Sending lat/long/elevation data to a geoprocessing service

I have a silverlight application that allows the user to select points to make a polyline. The polyline is densified per the users input (say every two feet). The new points are sent to an esri ...
5
votes
1answer
692 views

MXD Performance - number of layers vs number of datasets

My mxd currently has 5 buildings layers accessing 5 different buildings datasets (one for each of 5 counties). Most often there would only be a single county's buildings in the current view, if that ...
1
vote
1answer
367 views

Empty network dataset creation in ArcGIS for Desktop?

I'm trying to create a new network dataset via ArcCatalog in a SDE database. I've imported a street featureclass into my dataset, go to create the network dataset with all the default options. After I ...
6
votes
2answers
2k views

Creating geodatabase from CSV using python

I have a file with weather data (daily) for multiple weather stations for multiple years. I am looking for some python script to automate the database creation process and its interpolation on a daily ...
1
vote
1answer
532 views

Are there any repositories to find custom map tiles for an OpenLayers implementation?

I can't seem to find an WMS that looks the way I want. I've also checked all of the regular OSM places too and haven't quite found anything. Can anyone recommend any places to find custom map tiles ...
10
votes
1answer
6k views

How to copy a geometry from one feature to another without attributes?

With QGIS it's easy to add a new part to an existing feature/geometry but I can't see how to copy/paste this part from another existing feature/geometry. Is it possible? Thanks
2
votes
1answer
187 views

Cannot Set TOC View/Tab to Display with VBA?

I have some code from 9.3 that would check the CurrentContentsView.ContextItem to ensure that the TOC was in Display (or Drawing Order) view. If not it would set it to Display via: If Not ...
1
vote
2answers
450 views

use existing function in arcmap use VBA in Arcobjects

I have a UI tool button, I would like to get and use the existing function (select elements tool) in Arcmap when I activate this button, does anybody know that how to call the existing function using ...
5
votes
1answer
493 views

What's the Semantic Web got to do with GIS?

A few years ago there was a lot of discussion about the Semantic Web. Are any of the concepts underlying the Semantic Web coming into fruition with respect to GIS? Or is it just another hippie ...
3
votes
2answers
436 views

Third party base layer other than Google map

Can we use third party base map (images tiles) for displaying vector data?, like we use google map as base layer for displaying vector data in OpenLayers application.
2
votes
1answer
1k views

QGIS and satellite images band combination

When I add a satellite images as a raster in QGIS: 1. Why the image is changed, it looks like it has only one band?; 2. where is a tool for band combination? Thanks!
10
votes
2answers
2k views

Error handling with python script in ArcGIS 10

I have a python script that I am using to create a list of all mxd files (with full pathing) in our Projects folder. The script then uses that to iterate through the list and do a ...
3
votes
1answer
113 views

Is there a way to get the method how the location was processed?

Experimenting with the W3C Geolocation API. Is there a way to get the method how the location was processed? I mean GPS, IP, Cell IDs etc. I didn't find any object properties doing that. Thanks!
0
votes
0answers
38 views

Does Shooting star 1.05 not consider reverse_cost? [duplicate]

Possible Duplicate: PGRouting with 1.05 library in Postgres 9.1 Shooting star pgrouting lib 1.05 with postgres 9.1. Dijkstra and A-star working fine but "SHOOTING STAR" not considering ...
2
votes
2answers
1k views

How to use different 'missing tile' for OpenLayers?

I would like to use a different image for missing tiles with an OpenLayers application. Currently the tile is red/pink, with a red x in the upper left corner. I would like to remove that corner, does ...
7
votes
3answers
3k views

Using GIS for Interactive Floor Plan

GIS is brand new to me, but I've spent a couple of days researching so that I can at least ask somewhat intelligent questions. I've decided to use QGIS I need to do an interactive floor plan on the ...
0
votes
1answer
983 views

Using Google API 3 with Openlayers Brings POPUP [duplicate]

Possible Duplicate: Google Maps layer copyright popup every time map updated / user input I recently upgraded from google map api v2 to v3. It was working quite fine previously but now it ...
10
votes
4answers
5k views

How to avoid Pink tiles when DB view/Table is empty?

I have views that are spatial in a sense that they select some spatial column from other table. This table is published using geoserver. This table is live and sometime has no data at all. When the ...
1
vote
2answers
292 views

Buffer point dataset based on compared value

I am creating polygons from the dissolved buffers of points and need to control the dissolve process. In the model the first stage is to assign high/med/blackspot using the following f2='ERROR' def ...
5
votes
5answers
492 views

Where to find a list of geographic 'objects'?

Is there an extensive list of geographic "objects", "entities" or "features" that can be discovered in the geographic environment, relatively static and therefore can be geo-located and represented on ...
3
votes
2answers
3k views

How to implement feature search in OpenLayers with Geoserver?

I'm looking to build an application similar to this ArcGIS Server JS example which does a find task against a layer in the map. However i want to do this with OpenLayers, Geoserver and PostGIS. Some ...
4
votes
1answer
793 views

How to leverage packages like Geocortex for small business GIS professionals?

Can anyone talk about how packages like Geocortex could be utilized by small business or working from home GIS professionals? I would like to specifically know if Geocortex replaces any other ...
6
votes
2answers
1k views

How to create regular soil sampling grids?

I need to be able to set up a soil sampling grid at regular spacings of around 50 - 100 meters. Then export the points to a GPS so I can be guided to the points. I am new to GIS and have tried to do ...
1
vote
1answer
334 views

Print Overview widget as part of map

I am using ArcGIS viewer for Flex 2.4. I am trying to get the overview map to print as part of the map using the print widget. In my customized print widget, the user has the facility to opt for ...
8
votes
4answers
2k views

Cannot add plugins to QGIS on Ubuntu 11.10 Oneric

I have installed Qgis on ubuntu. it works fine but I am not getting option to add new plugins only option to manage plugins is available. Please help
4
votes
3answers
2k views

What is Geonode ? What all can be achieved using it?

Ok i have searched the site and did not find enough information concerning regarding what is a Geonode so i really thought i may ask everyone who has used it to give their opinion. I am trying to set ...
5
votes
3answers
669 views

How not to Copy Features when too many would be output?

This question has already been posed to the ArcGIS Geoprocessing forum but I have had no responses there. I have a 3.5 million polygon layer (cadastre) stored in Oracle via ArcSDE. I use a polygon ...
5
votes
2answers
8k views

Will mousedown events fire with Touch events on OpenLayers mobile?

I can't get the mousedown event to fire on a mobile device when I click on a marker. I'm using openlayers 2.11 with TouchNavigation. The mousedown event fires just fine in Chrome on my Desktop. Are ...
7
votes
4answers
7k views

arcgis10: create perpendicular transects to stream at specified intervals

I am trying to do what my title says. The goal is to input a line, segment it in an evenly distributed way by a specified distance, convert the vertices to points, then draw lines perpendicular to the ...
1
vote
2answers
1k views

Arcpy Performance If Then Statements

I'm rather new to python so my code might be horrid but I had a question about executing scripts from ArcMap and performance involving several if statements. The main objective is to create a toolbox ...
8
votes
2answers
3k views

Is it possible to convert graphics to features in ArcGIS 10 using arcpy?

Apologies if this is easy but I cannot seem to find the answer. Is there a way to convert a graphic to feature, i.e. use the "Convert Graphics to Feature" tool on the toolbar, within an arcpy script? ...
3
votes
1answer
1k views

OpenLayers jQueryUI Draggable

I am using open layers to render a wms inside of a div tag. This is right out of the openlayers documentation. My WMS layer is rendering well. <div id="map"></div> Using the jquery UI ...
3
votes
2answers
563 views

Slow FeatureClass Sort

I am passing in a geofeatureLayer to a method that creates a UniqueValueRenderer. I am using the following code to sort that renderer so my values will be in some kind of order. This seems very slow, ...
14
votes
3answers
4k views

Identifying road intersections using PostGIS

I'm trying to identify where roads intersect each other, and to make a point at this intersection, with the number of roads that form the intersection listed. I was wondering if there was some way ...
6
votes
1answer
1k views

Installing ArcSDE 10 on SQL Server 2008 R2 Cluster 64bit or 32bit?

I am looking for Tips an Tricks on installing ArcSDE on SQL Server 2008 R2 Cluster. Our IT division would like to have all the databases on their new 2008 cluster. I've only done standard install ...
2
votes
4answers
3k views

AxMapControl: How to set map extent in ArcObjects?

I have a stand-alone application written in C#. I want to be able to save and restore the current map view (extent) that the user sees. I assumed that it would be as simple as saving the active view's ...
3
votes
2answers
197 views

List counties in current extent using Data Driven Pages

Maybe I'm just not thinking clearly, but I can't figure this one out. I need to have a spot on my mapbook pages that says "Counties: " and is automatically filled with the counties in the extent of ...
1
vote
2answers
485 views

Script for creating a tile-pyramid from a wms service

Given a WMS service, is there a ready-made script that, for a given extent, creates a tile-pyramid that is compliant with: http://leaflet.cloudmade.com/reference.html#tilelayer That is urls on the ...
2
votes
1answer
906 views

Oracle spatial - check polygon vertices counter clockwise

I need to import a huge number of polygons from a third party (as a csv file- array of x,y's). I have to check whether the polygon vertices are in clockwise or counter clockwise, finally i have to ...
0
votes
2answers
1k views

GIS Web API - WFS-T Edit

My organization has a asset management application using Google Maps Java API as the GIS viewer. The application does some simple editing/querying on a kml file through html form elements. Instead ...
2
votes
1answer
263 views

Is there any simple Map Labeling Algorithm?

I was looking into how to Label a few features on a small Map, and want to label them on the fly. I would be adding a few features (a maximum of around 6 to 7) as graphics on a web-Map which has ...
2
votes
2answers
1k views

With Python and ArcGIS, how do I add features to a featureclass?

In ArcGIS Python code: CopyFeatures_management copies features to the same featureclass - that means overwrite to the feature class. How can I add new features to one featureclass or namely different ...
1
vote
2answers
144 views

How to prevent base layers from being edited?

I've made a local tile server (mapnik + postgis + tilecache). Now i need to make use of some editing tool so that only newly created layer can be edited: users of this tool shouldn't have rights to ...
9
votes
1answer
319 views

How to find the most spread out locations?

Probably a very simple question. I have a list of about a thousand potential geographical locations (lat lon), and of those I need to select the 200 locations that are "most spread out". I think that ...
2
votes
2answers
1k views

ArcMap - Strange Behavior When Trying To Wire IActiveViewEvents in IDockableWindow

I can't seem to wire up IActiveViewEvents for an IDockableWindow. I am using a straight out-of-the-box IDockableWindow which inherits BaseCommand. The snippet below shows what I have added to the ...
26
votes
5answers
3k views

Generalizing polygon file while maintaining topology in QGIS?

I have a polygon Shapefile, which I need to generalize. How can I generalize the poligons and ensure that there are no topological errors like "slivers". I already tried: Vector -> Geometry Tools ...
0
votes
1answer
2k views

GIS and RS MSc interview questions? [closed]

I have applied for GIS and RS Msc and GIS and RS Diploma courses in a university. They called me for an interview. They will select me to either MSc or to Diploma based on my performance. Please help ...
4
votes
2answers
859 views

Is Shooting Star broken in PGRouting 1.05?

I'm using pgrouting DLL 1.05 with postgresql 9.1. All required function installed. Astar and Dijkstra work fine with sample data but "SHOOTING STAR" is not considering "reverse_cost". Also if i try ...
1
vote
0answers
197 views

WFS getFeature Request Blank XML for some layers

I have following url request to geoserver. the first request results blank page but the second page results in number of feature count. Why it there blank xml for some layer while other gives number ...

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