1
vote
2answers
804 views

Is there a layer type that supports just labels?

Is there an OpenLayers layer type that supports just labels on a map without an underlying feature? I think this is called an annotations layer in GIS? If not, I'm not sure how to approach this and ...
3
votes
1answer
786 views

Which parameter values should I use with QGIS Heatmap plugin?

I've read all the posts and docs about the heatmap plugin but can't seem to get it to work. The map is the size of the United States and has a little over 2000 points. I've tried small radi (1 ...
1
vote
1answer
307 views

Ways and Vertices tables empty after osm2pgrouting tutorial

I've been following the osm2pgrouting tutorial, have compiled osm2pgrouting with necessary boost and expat libs installed, and built a postgresql db with support for postgis and pgrouting. Importing ...
6
votes
2answers
739 views

Creating many origin-destination routes with pgRouting

I'm using a PostGIS / pgRouting database setup with a road network. I'm trying to create an origin-destination table with the complete route information, so not just the sum of the length, like in ...
2
votes
1answer
3k views

How to combine If Then with InStr in ArcMap field calculator?

I want to write an if then in field calculator that tests if a field in the attribute table contains one of several versions of another string (the versions vary by capitalization). Trouble is, I ...
3
votes
3answers
257 views

How to compare a set of images with a shapefile?

I have around 150 images (rasters), each one is just a map of certain "classes", e.g. pixel value 1=forest. I also have a shapefile that consists of roughly the same area as the 150 images constitute ...
1
vote
1answer
73 views

stacked colours according attributes

I have a hierachical List of attributes e.g. column (1) S (2) SD (3) SD0 or (1) A (2) AN (3) An1 etc. So there is one S with several SD s and several SD0 in the attribute table. When I display column ...
12
votes
2answers
12k views

Specifications for GIS desktop hardware [closed]

I'm in the market for a new pc/laptop. Judging from what I've seen around here, a lot of people are discussing having a laptop for their personal GIS use. Portability is not an issue for me, so I'm ...
2
votes
1answer
1k views

Rendering GML in QGIS 1.9.0

I have a set of GML geometries (see here), which I try to load in QGIS. The set contains both points and polygons, but when loaded into QGIS, only points are shown. I tried to follow this thread, but ...
11
votes
1answer
672 views

How to associate polygons with the nearest point on a point layer? (Or … how do I assign a postal area to a salesman?)

I have a polygon layer of postal code areas and I want to use them to create sales territories based on where our sales people are based. So I assume that I need to work out for each of the polygons ...
2
votes
1answer
177 views

How to make Plugin-DataSource Layers Editable in ArcMap(Arcobjects)

The .Net samples of the developer kit for ArcGis contains an example, that shows how a custom data source(Plugin Data Source) can be added as a layer in ArcMap. It is done by implementing interfaces ...
3
votes
1answer
299 views

Road layers appearing as points in GeoServer previews - both openlayers and GeoExp

I am wondering why my roads layer keeps appearing as points when previewed inside GeoServer - layer preview using both the OpenLayers and GeoExplorer options. The data are imported from PostGIS. I ...
3
votes
1answer
313 views

What is status of OpenSceneGraph (OSG) plugin for QGIS? [closed]

Does anyone know if the OSG plugin for QGIS is working? If so does anyone knows what the future plans is for OSG plugin in QGIS? I am using QGIS version 1.8.0-Lisboa. I keep getting the following ...
1
vote
0answers
82 views

esri.tasks.GenerateRendererTask for non 10.1 ArcServer

I wish to use the same features as the esri.tasks.GenerateRendererTask but it seems that it can be only used on ArcServer 10.1. Is it possible to achieve the same dynamic natural jenks breaks in the ...
8
votes
1answer
2k views

Will there be an iOS version of QGIS?

I saw that QGIS now works on Android, any chance there will be an iOS version?
2
votes
1answer
258 views

How to unselect elements in PageLayoutControl (using C#)

I have a PagelayoutControl with the name: PageControl. And I added a text element into MapFrame (FocusMap) of the PagelayoutControl. If the text element and MapFrame are selected (by using the button ...
4
votes
1answer
624 views

Trouble Tabulate Area

I am using Kansas Cropland raster data from NASS with tabulate area to find out acreage of different crop types. The python I used works fine for 2006-2009 (56 meter cell size), except 2010 & ...
2
votes
2answers
5k views

Retrieving Google Map data into Matlab to plot points

First of all, I hope this question isn't too basic, obvious or inappropriate for this forum. I'm very new to using map data. I'm working on a project on more accurate map routing using Matlab. My ...
1
vote
2answers
5k views

How to change CSS style for panZoomBar?

How do I change or add the CSS style for panZoomBar? I.e. to change the panup, pandown, panleft, etc hover in CSS by attaching the class in CSS for those... and which class should I create it in...
4
votes
2answers
1k views

Spatial query of raster data

I have population distribution data as a raster layer and exposure contours as vector (polygon) layers. What I'd like to do is use the vector layer to estimate the population indicated from the raster ...
4
votes
1answer
716 views

Why are the polygons in my GML not rendered?

I tried to view GML files from download services ( http://services.cuzk.cz/gml/inspire/cp/epsg-5514/ ) and I have a problem with viewing of polygons from layer "CP:CadastralParcel". This Layer ...
0
votes
1answer
770 views

how do i load map service from using JavaScript API? [closed]

I created a Map Service in arc catalog. Now How i can load this map with javascript api ? I have this sample : <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" ...
5
votes
1answer
900 views

How to use a search cursor on a joined table in ArcMap?

I'm struggling to get a search cursor to work on a joined table view. I've used search cursors before, but never on data that has been joined. Arcpy keeps saying that some of my joined fields don't ...
6
votes
2answers
1k views

PostGIS - area-weighted calculation on an intersection

I'm trying to learn postgis sql by performing some familiar operations from ArcGIS. Here, I want to perform an area-weighted calculation of certain populations on the intersection of a set of parcels ...
3
votes
2answers
1k views

Not able to create a geoprocessing package in ArcMap using my own Network Dataset and associated data

I went through the following two examples to get an idea of how to create a custom, local Routing Task . . . This is a walkthrough that takes you step by step through the creation of your first ...
1
vote
1answer
790 views

Why does ftools' difference tool fail?

I have an area polygon with rocks on it i want to use difference to map the soft (ground, not rocks) cover. to do that i try using the (ftools) vector>geoprocessing>difference getting an empty ...
4
votes
2answers
2k views

Dynamically change zoom level of overview map to fit with current extent in DDP

I am using DDP pages in a large mapset with pages ranging from 1:7500 to 1:130,000 and the overview map is zoomed out to far to see some of the smaller zones. Is it possible to set the overview map to ...
2
votes
2answers
2k views

How to create a map with states by attribute value?

I'm using Qgis, but I am quite familiar with R and python. So I could use any of these. I want a map of mexico but want to color the stats according to a certain variable. It goes from 0 to 100. So ...
0
votes
0answers
31 views

How can I add KML to OpenLayers from remote server [duplicate]

Possible Duplicate: Problems adding KML layer in OpenLayers I'm trying to add the following KML to my Openlayers project: http://www.marinetraffic.com/ais/ge_marinetraffic.kml using this ...
5
votes
1answer
214 views

Which polygons surround this point? A practical case of political geography

I'm starting a project from scratch but am budget constrained. In plain language I've got no money. What I want is to provide an address and return what governments have jurisdiction there. The ...
3
votes
1answer
544 views

Where to download QGIS win7 x64 installer?

When I try to print big map (1200mm x 1200mm x 300dpi) on pretty strong computer (i7 975 12GB RAM) withj Windows 7 I obtain error Error - 'Image too big. Creation of image with bla bla pixels failed' ...
4
votes
1answer
53 views

Is there a QGIS mailing list that only announces new releases?

Is there a mailing list for qgis that announces only new releases / new binary packages? Thanks.
5
votes
0answers
378 views

How to convert a set of points to a solid object?

I have a data generated as the output of some numerical processes. I need them to be converted into 3D solid objects (as CAD solid format) to make them importable for some particular numerical ...
6
votes
1answer
104 views

How to get info from selected object?

I am new to the Quantum Plugin development and wonder if there is more information about the following. I have added a shape file and am (off course) able to select a point from this shape file. In ...
2
votes
0answers
1k views

How to insert data into fusion table using php?

I am using fusion tables to generate pins over the map. now I want to insert more coordinates data into the table using php but couldn't get any exact idea how to do it? Can anyone help me for that? ...
3
votes
0answers
327 views

How to get distinct values from multiple columns in GeoTools?

Is there a way to get distinct values from multiple columns in geotools? I know I can get unique values from a column like this: SimpleFeatureSource featureSource = ...
2
votes
2answers
274 views

How can a style be set on a specific polygon using OpenLayers?

Using a polygon id, I want to highlight a polygon, while the mouse is outside of the map area. I can identify the polygon using the following approach: x = 53; for(i=0; ...
5
votes
0answers
215 views

How to rotate polygon to find best fit in Mapnik? [closed]

I have a quite simple problem but somehow I just fail to solve it. There is a polygon and a range xsize and ysize. The x and y size determines the mapnik generated image. The polygon should now be ...
5
votes
1answer
360 views

How to cache PostGIS views?

Does anyone knows if there exists a caching system for views or queries in postgis? I have a system that gives information through a webpage using a postgis view as backend. The problem is that, ...
2
votes
2answers
314 views

QSpatialite install error in QGIS

I'm installing QGIS 1.7.4 in windows 7 & having problems with QSpatialite. I get 3 messages... Message #1 This DB a valid SQlite DB, but not a valid SpatiaLite DB. QSpatiaLite will now try to ...
3
votes
0answers
103 views

How to digitize 90 degree angles? [duplicate]

Possible Duplicate: How to create polygons with straight lines and right angles in QGIS? In QGIS 1.8 is there a way to digitize buildings etc. with perfect 90-degree angles, Or, edit a ...
5
votes
2answers
371 views

Show loading icon with custom tool

I have a custom tool in vb.net for a web application, i'm using Asp.net, the class is in vb.net and the gis service is in Arcgis Server 9.3 sp1, the tool makes a selection of layers and takes a lot of ...
3
votes
1answer
4k views

What is the difference between Astar and Dijkstra algorithms in Pgrouting?

I would like to know what is the difference between A* algorithm and Dijkstra at finding the shortest path at pgrouting. Which one is faster ,has better performance and returns better results. Also ...
3
votes
2answers
773 views

How to surround a clipped raster with transparency? (gdalwarp)

I am trying to perform the following task, but it does not seem to work: I have got a raster file (raster.tif) containing an aerial photo, which I want to clip using a Shape file (clip.shp) that ...
2
votes
1answer
484 views

How can I enable panning using Openlayers and a vector overlay with controls?

I am creating a map using the following code: map = new OpenLayers.Map({ div: "map" }); Then I load in a geojson polygon layer and add two controls var highlightCtrl = new ...
5
votes
2answers
3k 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 ...
7
votes
1answer
2k views

How to choose raster interpolation method?

I work with a dataset of ~1.3 million residential buildings; each of them is described by a normally distributed variable ranging from 0 to 100. The dataset covers whole Switzerland so there are ...
7
votes
1answer
703 views

Slow FileGDB Performance in GDAL

I am attempting to write many ASPRS LAS point files into an ESRI File Geodatabase using my compilation of GDAL 1.9.2. The FileGDB driver for GDAL/OGR appears to be incredibly slow when writing large ...
2
votes
1answer
68 views

Is there a workaround for 80+ layers in OpenLayers?

My Map web app reads client list from SQL server and for each client it draw points on a different layer so that the user could turn on and off that layer and see his entire customers. Problem is that ...
-1
votes
1answer
1k views

Qgis 1.8 Lisboa does not have Join attributes (only Join attributes by location)

I installed 1.8 Lisboa. I tried to join to the attribute table more data (more columns ), but Vector/Datamanagement Tools/ Join attributes by location there were also not "Join attributes" ...

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