2
votes
1answer
3k views

Using clip tool in qgis - contours to exact map area

I am using QGIS. I am trying to clip contours and water vector layers to the exact size of my map (polygon layer). Sometimes it works; sometimes the program crashes before completion (at the same ...
4
votes
1answer
877 views

How to use scale -rule based renderer in QGIS?

I wish to render a shapefile of builindings such that at scales below 1:5000, they have a border, and above 1:5000, they do not have a border. For this, I went into layer properties, selected ...
2
votes
3answers
1k views

adding non spatial attributes using geoserver

I am using Openlayers + geoext to perform transaction operations in postgis database using geoserver . i can insert spatial data into postgis but cannot insert other data like road name, road type in ...
6
votes
1answer
677 views

overlay county shapefiles for 2 different years

I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay these two files so that they do the union and indicate the percentage of the land in 1880 that went ...
4
votes
2answers
2k views

Trimble GeoXH, XM, XT - Data logging without Terrasync or GPSCorrect?

Is it possible to capture data for post processing on a Trimble GeoXH, XT, or XM without using Terrasync or GPScorrect? Specifically I would like to create a RINEX file. A Trimble 4000 series receiver ...
3
votes
1answer
544 views

Can an htm file be imported into Trimble's Data Dictionary Editor?

We've received several data dictionary files from other entities and they all are in *.htm format. We were hoping to not reinvent the wheel, as these are massive data dictionaries, so does anyone know ...
3
votes
2answers
1k views

Alternative to Terrasync for Trimble Windows Mobile unit

I have a number of Trimble Nomad 900 series devices and am currently using TerraSync. TerraSync does the job, but are there any other alternatives out there that would be even simpler to use? ...
4
votes
5answers
746 views

How to save a raster and vector into a single PNG file in GRASS?

I am trying to save a raster and vector into a PNG file. The vector is overlayed on top of the raster map. I was only able to save the raster file into a png using r.out.png but without the vector.
4
votes
4answers
624 views

How to compute geodesic area in GeoDjango?

I have some polygons which can be anywhere in the world. I would like to compute their areas. The GeoDjango docs for GEOSGeometry.area don't specify whether it is geometric or geodesic area, but ...
-1
votes
1answer
153 views

pure OpenLayer is good or GeoExt [closed]

pure OpenLayer is good or GeoExt WHich have more options w.r.t GIS client-side
1
vote
0answers
481 views

translating and scaling viewport to fit geojson map in D3js

I am trying to load a map of Rio de Janeiro (Brazil) in GeoJson for with D3js the code and the map is here: https://gist.github.com/4157853 I can open the map normally with Qgis, but with d3js ...
3
votes
1answer
536 views

Labels with white (or other color) background

I tried to give my labels somekind of box and a backgroundcolor (or boxcolor) in QGIS, but i couldnt find the right option. My labels are not readable because my layers are too dark. I found offset ...
1
vote
0answers
24 views

Retaining original thematic colors in a USA source shapefile [duplicate]

Possible Duplicate: Adding Layerfiles (.lyr) to Qgis New to QGIS and need a lot of help! I am using QGIS with MAC - I have downloaded a USA thematic map but when I open it in my system it ...
2
votes
2answers
859 views

Should I implement TSP or Dijkstra?

I was asked to create a shortest path algorithm in java to use with OSRM. I want to create a route between some points (normally more than 3). The first one, will be the starting point and also the ...
2
votes
0answers
82 views

Cubist Add-In for ArcMap

I'm looking for an ArcMap add-in that will create a raster based on rules from RuleQuest Research's Cubist .model files. Ideally, the add-in will give the user the option of matching input raster data ...
3
votes
2answers
954 views

How to create a standard deviation map from three rasters in QGIS?

I have 3 normalised (0-100) raster maps. Is it possible to get a map which shows the standard deviation? I'd like to see the areas with smaller and higher std deviation. Thank you!
2
votes
1answer
203 views

How to create infrastructure coverage using pgRouting?

I'm trying to reproduce what Underdark did here. I succesfully installed pgrouting and the two required function (nearest neighbour and driving_distance). cdv_osm_v contains all the openstreetmap ...
2
votes
2answers
594 views

Problems aligning layers digitized from Google earth into ArcMaps10

I'm a PhD student new to ArcGIS. I'm digitizing features from Google Earth to use in ArcGIS (I work in India, where the mapping in GIS is at best scanty). I drew along a river in Google Earth, saved ...
4
votes
1answer
909 views

ArcGIS Javascript API - Return 'normal' map extents when panning around the world

ArcGIS Javascript API maps allow the user to pan around the world, which is a great feature, however I am performing some processes that rely on map extents. I have discovered that despite the ...
1
vote
0answers
59 views

SQL server 08 Limitations

The Soil SURvey GeOgraphic (SSURGO) database is a set of very large and complicated shapefiles. We want to load all of the shapefiles for the US into a national SQL database. Are there import ...
7
votes
1answer
3k views

How to remove a vector QgsVectorLayer from QGis python plugin

I managed to add QgsVectorLayer in QGIS through a python plugin, for example: vl = self.iface.addVectorLayer(uri.uri(), layerName, self.dbConn.getProviderName()) But how can I remove it?
2
votes
1answer
500 views

How to repair broken Mosaic Dataset data sources?

I have a question. My computer has been replaced with a new Xeon Workstation. Before that, I had a temporary workstation and had ArcGIS 10 on it. While I was waiting for the new workstation to be ...
2
votes
1answer
184 views

Lidar Elevations Data

I am trying to acquire a method of detecting sub cm elevation without manually measuring from the field. Can LIDAR data produce this for me? Example: A 1500 foot long pipe conveying water from one ...
6
votes
2answers
604 views

How to redistribute population data using Python in ArcGIS?

I am trying to redistribute population data from census centroids among to housing density.Would you please help me to do that? I do have census area centroids (points) and the boundaries belong to ...
3
votes
1answer
476 views

Need help: Sorting elements of a combo box in ArcGIS Java script API (ver. 2.8)

I am using sorting elements in combo box in ArcGIS Java Script API (v.2.8) & for sorting I am using “ fetchProperties="{sort:[{attribute:'name', descending:false}]}". All entries in combo box are ...
2
votes
3answers
369 views

How to use MasterMap address layer with QGIS?

I have a copy of QGIS. I have a MasterMap address layer for my area. How do I get the map onto my computer and open it please?
3
votes
1answer
398 views

Problem in displaying a GeoTiff image in JMapFrame

I'm trying to display a GeoTiff image with no projection but where the geographical extent (bounding box) is known: reader= format.getReader(new File(sImageName)); GridCoverage2D gridCoverage= ...
2
votes
0answers
11 views

updatation query along a point [duplicate]

Possible Duplicate: GIS QUERY on point and buffer All, I have a PostGIS/Postgresql DB that has one table in it. One with point geometries and the other that represents buffer as polygons. ...
8
votes
5answers
355 views

How to ensure uniform colour for DEMs?

This is a silly question, but one I've been trying to figure out for a while. I have two Aster DEM tiles, one next to the other. How do I ensure uniform colour for both?
1
vote
1answer
157 views

QGIS and Ubuntu 'browse' dialogue causing crashing

Below is an image of 'the suspect dialogue' in Ubuntu that when you encounter it in QGIS you are most definitely going to crash the application. http://ow.ly/i/ZGNc/original You find this ...
2
votes
1answer
114 views

Error message 'Module qgis.v.kernel.rast.py not found'

How do I repair this error in QGIS: The error message was received whilst trying to run v.kernel from the modules list. I can however run v.kernel from the GRASS shell. A while ago, I installed ...
3
votes
2answers
497 views

ENVI BIL file algorithm logic

I have a 6 band Landsat image, RGB and 3 NIF bands. As far as the Band Interleaved by Line (BIL) method goes, the resulting image should have, and I quote ENVI manual: the first line of the first ...
7
votes
1answer
278 views

Why is QGIS 1.8 crashing when exporting to PDF?

I want to export for example this: but qgis crashes. Sometimes with an error message std::bad_alloc. But: My Mac has 8 GByte RAM and "just" 5,... something (of 8) GByte are used, moreover there is ...
7
votes
2answers
1k views

How to get correct area calculation using Google Mercator?

i use QGIS with openlayers-plugin and i´ve loaded google satellite as a layer. what i want to do is making a shape-layer (polygon) with the goal to get the area values of the polygons. i´ve activated ...
6
votes
2answers
2k views

Get X, Y coordinates in the center of a raster cell

I am trying to get the X, Y coordinates of all the cells of a raster file, using Python 2.6 and ArcGIS 10.0. I would like to get the X, Y coordinates in the center of the cell. Is there any way to ...
2
votes
1answer
1k views

How to improve OSM layer resolution in OpenLayers plugin while exporting?

I'm having trouble with the OpenLayers Plugin exporting a map to a png or pdf file: The output resolution of the exported osm-layer is very, very poor. Zooming to 100% in the png file shows big ...
2
votes
2answers
2k views

How to install OpenLayers plugin in QGIS1.8

I am using QGIS 1.8.0 on Windows 7 (32-bit) but am unable to install the OpenLayers plugin. The Python plugins menu does not include OpenLayers on the plugin list. Can it be somehow added manually? ...
1
vote
1answer
677 views

Openlayers Overview and OpenLayers versions

I have installed OpenLayers and the Openlayers Overview plug-ins but I am not sure if they are working. I can create new 'open' layers from the Openlayers plug-in drop down, but when I try to add a ...
2
votes
2answers
515 views

How to get easting & northing of cell in raster using ArcPy?

It might be very simple task. But I would appreciate if someone can comment on How I can get easting and northing of a single cell raster using arcpy as this value is used for in further steps. ...
2
votes
1answer
391 views

How to move the QGIS Layerpanel/Dockwidget programmatically

i'm working on a QGIS-plugin and want to move the default LayerPanel/Dockwidget to somewhere else programmatically. More specific: i want to move it into a tab of my tabwidget. Is this possible? How ...
3
votes
2answers
180 views

My KMZ works for older versions of GE, but not the newer ones

I have a KMZ file which is a time animation. It used to work in the older GE, such as version 5 (I think). I can load the KMZ file in the newer GE, but do not see the animation control bar to play it. ...
3
votes
1answer
232 views

geoserver wfs access denied

I've created a role in GeoServer called WFS_ACCESS. I've assigned it to a user called wfs_viewser and have the following rules setup: Though when i hit my wfs service and login with wfs_viewer ...
2
votes
2answers
565 views

Insert Javascript code in Popup.FramedCloud?

I would like to have a live stream from a web camera in a Popup.FramedCloud. All I need to do is to insert this code in the HTML code parameter for popup: <script ...
2
votes
0answers
500 views

How to use javascript in fusion tables to query

I'm having a quite bit of difficulty creating some functions for my fusion tables. I have two tables here: Points Parcels I'm trying to create a number of functions: 1) I want to be able to select ...
4
votes
3answers
943 views

Where can I find a GDAL distribution with DWG support?

I want to use the GDAL utility ogrinfo with dwg files. Where can I find an GDAL distribution with a support for DWG files (read only)? DWG support is moved out of the normal GDAL/OGR source ...
5
votes
1answer
148 views

Where can I get US snowfall data with day resolution?

I need to visualize the snowfall in the USA for a given time period and city. So you could pick a given day and get a heatmap showing the amount of snowfall at each place in the USA on that day. ...
5
votes
2answers
18k views

How to embed map into access database?

I am developing a database for my organisation that could be spatially enabled. I have to use MS Access 2007 on Windows and am therefore looking for any possibilities to encorporate my access DB into ...
0
votes
0answers
61 views

Point to Polygon [duplicate]

Possible Duplicate: Create new polygon layers from postcodes latitude & longitude I'm running QGIS 1.8.0 I have a list of points that I need to convert to one polygon. So far I have ...
5
votes
1answer
79 views

Geographic locators within Polygons

I have a list of geographic locators and a boundary file. In QGIS, is there any way merging them together to create a lookup saying this boundary contains these locators? Not the number the actual ...
4
votes
2answers
754 views

Find locations of raster maximum within polygons: Basin Delineation

I'm trying to identify the Location (lat/lon) and upstream area of every raster point that flows into the Arctic Ocean (there are a lot so it has to be fully automated). I'm starting with the ...

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