Unanswered Questions
14
votes
0answers
377 views
Is there an open source GIS to view and edit CityGML models?
I'm looking for an open source GIS that supports viewing and editing of CityGML models.
So far, I've found a list of open source applications that support CityGML, but they all seem to be ...
11
votes
1answer
168 views
Precision when working with spatial data in GIS
Is there a basic or introductory study that examines and compares the precision of spatial data when working
with varying precison of the data input, like having 1, 2, ... decimal places?
with the ...
11
votes
0answers
187 views
Looking for a “Select by Attributes” plugin/widget for ArcGIS Server JS API
I'm hoping to find some existing code which emulates the "Select by Attributes" dialog in ArcMap, within the ArcGIS Server JavaScript API.
Writing a hard-coded QueryTask is easy - I'm looking for ...
9
votes
0answers
223 views
How does Nearest Neighbor Image Resampling work in ArcGIS?
Hi I am trying to understand how nearest neighbor for the resampling of Image datasets works in arcGIS.
The output raster cell value is the value of the closest cell value in the input raster:
In ...
9
votes
0answers
182 views
Copy GeoWebCache generated tiles from one server to another
I have a set of tiles (millions) generated by the builtin GWC in GeoServer 2.1.2 which is stored on server A.
I would like to copy all the tiles to server B containing GeoServer 2.1.3 and the ...
8
votes
2answers
248 views
ArcGIS - How do I group corner-touching contiguous polygons?
Using ArcGIS 10, I have a Feature Class which I converted from a Raster (GRID) (Raster To Polygon Tool).
There are approx. 180,000 polygons.
The attribute table contains a [grid_code] field which ...
8
votes
0answers
203 views
Hyperlink tool use in ArcEngine
I'm having some difficulties using the hyperlink tool (ControlsMapHyperlinkTool) in ArcEngine. Does anyone have any experience with it?
It looks like it behaves correctly except that every time a ...
7
votes
0answers
77 views
Nearest Neighbor problem in Postgis 2.0 using GIST Index (<-> function)
I'm trying to use Postgis 2.0 new function <-> (Geometry Distance Centroid) in order to calculate, for each row of my table (cosn1), the distance to the nearest polygon of the same class.
I was ...
7
votes
1answer
326 views
Large Scale Geocoding and Processing in ESRI
Ok, so I guess this kind of a informal query/survey about how big a datasets you are using in your ESRI worlds...
I am building and maintaining a statewide dataset, where I have to process down to the ...
7
votes
0answers
145 views
Efficient raster sampling of billions of polygons (bounding boxes)
How can a raster be computed efficiently (in Python), given a set consisting of billions of bounding boxes (read sequentially from a file), and given that the raster values for each cell should give ...
6
votes
1answer
177 views
Clearing map cache - ArcGIS Engine
Is there a programmatic way to clear the cache of a map in ArcGIS Engine 10.0?
It is apparent that there is some caching scheme operating under the covers, and I'd like to clear all of its cached ...
6
votes
1answer
472 views
Can ArcGIS Server WMS display a graphicslayer?
I have tried to display a graphics layer with the WMS functionality of ArcGIS Server, but I cannot see the graphics in the image of the getmap response.
I have done is manually by publishing a ...
6
votes
0answers
132 views
Comparison of geocoding solutions (such as Gisgraphy & PostGIS 2.0)
As I am sure many of you are aware, PostGIS has finally released Version 2.0 and included within this version they have also built a geocoder (see: http://postgis.refractions.net/docs/Extras.html).
...
6
votes
0answers
247 views
Incorporating Length of Route Value into Cost Evaluator Function (ArcGIS Network Analyst)?
A friend and I (who more frequently than I posts on this board) are creating a walking network and we have run in to a snag. We would like to attribute a cost evaluator to our network dataset using a ...
6
votes
0answers
131 views
What are some examples of interesting zoom slider customisations?
The default Claro zoom slider control is pretty boring.
It's also hard to see on top of many basemaps:
Are there any examples of some nice customisations I could use for inspiration?
