2
votes
1answer
1k views

How to save WMS getFeatureInfo points to a layer?

This may be a poorly worded question, because I am not sure of the exact terminology, but I'll give it a shot. I have imported a vector layer from a WMS server into QGIS. I am able to query the ...
2
votes
0answers
97 views

MultiPolygon from database

I would like to know how to create an instance of a Multipoint from a PostGIS database.. I do the query , then got the ResultSet named "area" , the column with MultiPolygon attributes is named "geom" ...
1
vote
1answer
355 views

How can I edit and save feature attributes of a WMS layer in OpenLayers?

I am creating a data editing application in OpenLayers where the user will need to be able to edit the attributes of features (which are stored on a GeoServer installation). I have seen documentation ...
6
votes
3answers
8k views

Open source database of world locations [duplicate]

Possible Duplicate: Comprehensive list of Latitude and Longitude values of cities round the world i would like to know if is out there any downloadable database of world locations, i know ...
5
votes
2answers
340 views

Available US State or National business (or employer) database lists?

This question dovetails with this post on geomarketing applications. I am familiar with some of larger, paid-for business registry's like InfoUSA and Dunn & Bradstreet. While the detailed ...
12
votes
3answers
3k views

Optimizing a nearest neighbor calculation using PostGIS

I'm using PostGIS to calculate the nearest neighbors of polygons. What I want to calculate is the minimum distance from each polygon, to the nearest polygon. Thus far I have got great help from Mike ...
1
vote
1answer
342 views

Installing GRASS on MINT 14?

I'm very new to mint/linux/GRASS and have no clue how to deal with these errors. Can I just change the URL somewhere? Here is the simplest reproducible command to produce a failure: sudo apt-get ...
1
vote
1answer
594 views

In what situations would SpatiaLite be selected over PostGIS, and vice versa?

I know that SpatiaLite is a lightweight solution. Would it be a problem if I put it on a 5K pageview/day site? Is PostGIS too resources-consuming for such usage? The dataset is something like < ...
1
vote
1answer
380 views

How to compile liblwgeom independently?

For using liblwgeom function in spatialite, I need to compile the library. I found that it is included in the PostGIS code. My question is, how to compile the library without compiling the whole ...
4
votes
1answer
2k views

How do I solve a “No PROJ.4 translation” error with gdal?

I've installed gdal using the brew utility on OS X so the proj and geos dependencies were also installed. I'm now trying to warp a GeoTIFF so that I can import it into Google Earth. I am getting a ...
1
vote
1answer
2k views

Re-centering a map layer using manually input coordinates in GeoExt

I am trying to create some code in GeoExt that will allow me to centre that map layer I am viewing to coordinates that have been submitted through a formPanel. I would have thought that this would ...
0
votes
0answers
108 views

Layer not showing up need ideas

I tried to replicate the example at OpenLayers WFS protocol: work with filters if the protocol is defined out of layer constructor and can't get it to work. I copied the html page into a web ...
1
vote
0answers
874 views

How to clip the contour map with the polygon using R software?

Hi I am wondering how can I create the contour lines from the discrete x, y and z dataset and then add the shapefile to cut the contour lines by polygon. I want to clip the contour map by the shape ...
1
vote
0answers
49 views

given sets of vehicle passing on each edge, how to get most used vehicle to avoid transition?

I have two tables: one, the resulting table from converting osm.xml via osm2po so I can use pgRouting, and another one that contains information on what edges each public vehicle passes through ...
5
votes
1answer
2k views

How to break (both) lines at their point(s) of intersection in QGIS?

I'm working with a road network where some of the road segments cross each other but no point is inserted at their intersection. Is there a way to break these line to shorter lines at their points of ...
2
votes
2answers
1k views

error message when clipping raster with vector layer

When I try to crop a raster using QGIS Clipper tool, I get the following error message: ERROR 1: Attempt to create 0x0 dataset is illegal,sizes must be larger than zero.. Why? The code QGIS generated ...
2
votes
1answer
249 views

turn osm2po vertex table restrictions column into turn cost for shooting star pgrouting?

i found this thread Does OSM2PO take into consideration turn restrictions? but im kind of new to sql and database so me, making my own query or sp to achieve the above suggestion by myself is kind ...
2
votes
1answer
397 views

How Select only specific feature from selected features of more than one layer

I selected features using select feature tool in a map. I want to fetch only specified features among all selected features of different layers. For example, I want to fetch only roads among all ...
1
vote
2answers
1k views

Import Civil 3D DEM to ArcMap or QGIS

I have some survey data exported from Civil 3D in both dtm and dem formats. I thought the I would be able to use the dem more easily, but I think the format is different from a USGS DEM. Is it ...
2
votes
2answers
5k views

OpenLayers WFS protocol: work with filters if the protocol is defined out of layer constructor

follow question:wfs-load-feature-check the scenario is: i am trying to load a WFS layer, since it takes a while to load all features, I want to give user a notice while waiting for response. the ...
6
votes
2answers
618 views

Possible to Call ArcPy Script From AddIn in ArcGIS 10.0?

Is it possible to call an ArcPy script from a Java/.Net addin in ArcGIS 10.0?
0
votes
1answer
807 views

Parsing list object file paths for file name

I am trying to automate a naming process that takes the file name from a list of file paths to name other folders, geodatabases, zipfiles, etc. The problem I'm running into is that, I assume, I am ...
0
votes
0answers
366 views

Send WMS Request as JSON

I'm using openLayers and geoserver. I'm making a layer with openLayers.Layer.WMS to geoserver and am adding cql_filter to filter down id's. Here is my code: var kent = new ...
3
votes
0answers
66 views

Programatically reorder layers in qgis? [duplicate]

Possible Duplicate: Sort layers in QGIS table of contents? I write a qgis python plugin ,and i try to connect keybord keys to reoder layers in qgis . Are there a method in qgis allows me to ...
-1
votes
1answer
86 views

OpenLayers app on another site [closed]

I use OpenLayers, GeoServer and PostGIS in my application. app is served on apache httpd. and geoserver is served on apache tomcat. I use vector/wfs requests to display the features, so I use ...
10
votes
3answers
472 views

Where can I get aerial images for commercial use?

Related question: Free aerial map images for commercial use - Alternatives to Google maps I'm looking for a service that will allow me to download images at up to 1 meter resolution. Currently our ...
4
votes
1answer
7k views

What is the relationship between ITRF and WGS84?

Why are there people saying that "I am using WGS84(ITRF96)"? There are newer version of ITRF. Will WGS84 follow it? If so, what will be the influence to us?
3
votes
3answers
491 views

Installing the development files libqgis-dev in Ubuntu 12.04

I am trying to install development files which include the headers and the libraries for qgis in Ubuntu 12.04. I used Ubuntu software center, synaptic and the terminal and am still getting the same ...
4
votes
1answer
246 views

How to select points within polygon constrained by field?

I've created a polygon from a raster dataset: arcpy.RasterToPolygon_conversion(RasterInt, "C:/arc/poly_int.shp", "NO_SIMPLIFY", "Value") The 'value' field has numbers 1-37, which map to the ID ...
1
vote
1answer
409 views

GeoExt2 download source code

I use GeoExt2 in my app through online path: Ext.Loader.setConfig({ enabled: true, paths: { GeoExt: "http://geoext.github.com/geoext2/src/GeoExt/" ,'Ext.ux': ...
0
votes
1answer
333 views

Problem in Spatialite database creation

When I try create a new DataBase, Spatialite plugin return the dialog error box: The SQL query seems to be invalid. no suck table: views_goemetry_columns When I click in OK button, a second dialog ...
1
vote
1answer
2k views

How to get feature info from wms layer

I have used your code for picking feature info from wms layer using WMSGetFeatureInofo function.I have used you this link. ...
2
votes
1answer
286 views

I have tiff file that has been modified and geotiff file with info, how do i convert my tiff to geotiff?

I have modified tiff file that i would like to turn to geotiff. My orginal geotiff has the following information that i got from gdalinfo: Driver: Gtiff/Geotiff Files: info.tiff Size is 1127, 831 ...
4
votes
1answer
103 views

Reduce number of vector field arrows in qgis

OK, now that I have figured out how to get my vector fields in qgis, I can't figure out how to reduce the number of vector arrows on the map. Is there a setting for how many vectors are sampled? ...
6
votes
1answer
339 views

Plotting 1M+ intensity reading as custom shapes with Google Maps

I currently have a database (Mongo, atm) holding roughly 1M points of data corresponding lat/lon/intensity values that I'd like to plot over a region using the Google Maps API. Ideally, I'd like to ...
4
votes
2answers
138 views

Creating space at intersection of two links

I have a shapefile consisting of two links which are crossing over each other. I want to create an empty space at the point of intersection of the two links. As of now, I have been manually doing ...
9
votes
1answer
673 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 ...
3
votes
1answer
264 views

How to save buffer created with ArcObjects to a database?

I have created a buffer as follows IMap map = axMapControl1.ActiveView.FocusMap; IFeatureSelection fSelection = map.get_Layer(0) as IFeatureSelection; ISelectionSet selSet = ...
4
votes
2answers
677 views

Can I download the current version of QGIS if I am running Mac 10.8.2?

I am taking an introductory course in GIS at my university and my teacher recommended QGIS for Mac users. Unfortunately, I haven't been able to download the software. I just upgraded to Mac OS 10.8.2 ...
0
votes
1answer
916 views

How to reproject layers (using GeoServer and OpenLayers) in order to overlay on the google maps [duplicate]

Possible Duplicate: Openlayers and Geoserver: OSM/Google Maps and WMS Overlay I am writing a code using OpenLayers. In this code, I want to display different layers in different zoom ...
2
votes
0answers
192 views

QGIS 1.8.0 suddenly sluggish/unusable on Gentoo

QGIS 1.8.0 has been working fine for a number of months. Then I upgraded my system generally, which possibly included upgrades to xorg-server and QT, and now QGIS is sluggish/unresponsive to the point ...
6
votes
2answers
2k views

Does SQL Server need extensions to do spatial?

Does SQL Server need extensions to do spatial like Oracle does? Just wondering if there will be extra costs for implementing a SQL Server backend to SDE. Thanks
1
vote
1answer
129 views

Set certain amount of pixels to 1 inside of a polygon (GRASS)

I have a rather coarse vector map with polygons and want to calculate a (sufficiently) finer raster map defined by spatial extension and resolution. Every polygon of the vector map has a value ...
2
votes
0answers
321 views

Different results given by PostGIS and MySQL?

I'm developing a spatial database of administrative areas. I started out with PostGIS, but as MySQL is being used in our other projects, I thought I would at least try to create a spatial-enabled ...
1
vote
3answers
347 views

Is it possible to create a PostGIS sequence to populate Area column of a polygon

I've created Postgres/PostGIS sequences before to assign unique gid values when a feature is created in QGIS but is it possible to create a sequence that will automatically populate an area column? ...
2
votes
2answers
2k views

KML from EPSG:4326 to EPSG:900913

im trying to create KML files manually (XML format) by extracting data from a postGIS database with "geography" values in a column. But i belive i need to transform the projection of each row in the ...
2
votes
2answers
807 views

How to recreate Mapinfo labels in QGIS?

I try to convert a mapinfo tab-file containing textobjects wich are positioned and rotated in mapinfo into a shapefile or something similar without loosing all information. All information is located ...
2
votes
2answers
233 views

Are you able to buffer labels to prevent other labels within the buffer area?

I saw a post that talks about label offsets, but that was in 1.7. I did some internet research with no success. Is there a way to apply a buffer area so that labels from another layer are not placed ...
0
votes
1answer
475 views

How do I fix out of bounds geometric extent error?

I'm new to GIS, and I'm roughly following the instructions here: http://mapbox.com/tilemill/docs/guides/postgis-work/ to try and import data I obtained from here: ...
1
vote
1answer
2k views

Split linestring to smaler lines

Hi I need help splitteing a linestring into smaller linestrings, using postgis. I need to route to closest point on the linestring, so i need to have more points on the line Sample Linestring = ...

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