3
votes
0answers
94 views

Why does multi-threaded rendering not use all the CPU potential in QGIS 2.4?

I have just downloaded QGIS 2.4 which is great and ran some tests. I have enabled the multi-threaded rendering but it seems that the program do not use all the potential of my CPU. Attached pic shows ...
3
votes
0answers
53 views

How to find the minimum number of inspection points?

I am working on a pipeline inspection project and there is a high liklihood that some inspection tool deployment/retrival station will need to be installed on the pipe network. the problem is ...
3
votes
0answers
161 views

arcgis server performance comparison

Are there any recent comparisons/studies of arcgis server vs. open source gis servers in common tasks like providing a wms/wfs, filtering data/search performance, and so on? We received a lot of ...
3
votes
0answers
22 views

Opposite than normal behavior in zoom with restricted extent and vector base layer

My map has OSM base layer and i have restricted its extent. This worked normally. Recently i added a blank baselayer so that the only overlays could be shown. base = new OpenLayers.Layer("Blank", { ...
3
votes
0answers
36 views

How to update location via a data streame in openlayers or Leafletjs

I'm developing a application where I need to real-time update a Location of a Map using a data stream, I'm planing to use web-sockets, Are there any guides I can follow? Or can you guys direct me in ...
3
votes
0answers
50 views

Arcpy in Python Plugin for SPSS

Is it possible to run the arcpy module in the Python for SPSS plugin to run the search and update cursors?
3
votes
0answers
64 views

ArcGIS Server 10.1 Integrated Windows Authentication with Token based

In ArcGIS Server 10.1 on Windows 7 and IIS, if wanting to secure services within an Intranet with Active Directory is that Integrated Windows Authentication ...
3
votes
0answers
294 views

How to display ONLY local country names in google maps?

I am using google maps in an application where it is important that country labels display the country name in the local language. If you pass in certain language parameters that google maps ...
3
votes
0answers
46 views

Looking for a mobile app for a field campaign with specific spec

In the frame of an international project in agriculture monitoring, I have to propose a mobile app that will be used as a reference for field working. The minimum requirements of such an application ...
3
votes
0answers
54 views

Servers that implement OGC Geo/Time OpenSearch

The OGC is close to publishing the "OpenSearch Geo and Time Extensions", which can be downloaded from http://www.opengeospatial.org/standards/requests/116. That specification is based on, but extends, ...
3
votes
0answers
97 views

Are there trade offs between using a geohash vs using a quadkey as a spatial index?

QuadKey Bing Maps uses a quadkey structure for their tiling scheme. Here is an overview of the concept http://msdn.microsoft.com/en-us/library/bb259689.aspx. GeoHash A geohash seems to be the more ...
3
votes
0answers
128 views

ESRI geodatabase, Oracle spatial performance

We are storing data in a Geodatabase on Oracle 11g using Oracle Spatial with SDO_Geometry, and then consuming that using ArcGIS server 10.2.1. The performance is very slow, because we are talking ...
3
votes
0answers
20 views

MapInfo 12 Legend settings

Does anyone know how (if) I can set the defaults within Legend Designer? I want my rectangles for each layer to default to a 20x20 square, not a rectangle. At the moment I have to change it manually ...
3
votes
0answers
43 views

Is it possible to render tile-based web mapping projects in any other projection than web mercator?

Web-mapping technology has to a large degree adopted the web-mercator projection as the standard projection for displaying geographic objects with interactive map-clients. This is due to many factors ...
3
votes
0answers
115 views

R Raster package loop over pixels

I want to perform a trend analysis for each pixel over it's time dimension. Therefore I wrote a loop over each pixel doing the calculation but this is extremely slow. I am sure there must be a faster ...
3
votes
0answers
52 views

Is it possible to link Google maps API for business from Openlayers?

I want to know whether it is possible or not? to get Google's 3 layer types in openlayers, nothing more. Just I came across a web-page about supplying private key from openlayers to google maps for ...
3
votes
0answers
68 views

What are the pros/cons of using an MSSQL SDE Database rather than a File-gdb in ArcGIS Server

I have taken over an ArcSDE 9.3 Enterprise database setup which has around 80% of it´s vector data in an MSSQL SDE Database system and 20% in FileGDB on the application server. I am trying to ...
3
votes
0answers
104 views

Performing cluster analysis in R with Point Datasets

I am a R-Beginner, but I want to use it for some spatial statistics. I want to check the relation between the occurrence of ill persons and the existence of water in a area of interest. To give you a ...
3
votes
0answers
79 views

How to extract zipped shapefile and check its shape type using arcpy module without writing on disk

I have a zipped shapefile saved on my disk. I want to extract it in memory and check the shape type. I'm using arcpy module and want to stick to only default modules comes with python installation. I ...
3
votes
0answers
114 views

How to compute surface of raster or any point using ARCGIS?

I have a raster image whose values are a digital elevation model of terrain. I need to know the surface type (topographic characterization) of particular points along transects of this DEM. How to ...
3
votes
0answers
189 views

Convert land-based camera image pixel x,y to ground lat/long or x,y,z

I have a number of cameras at various known locations (x,y,z) and directions that are above ground about 20 feet pointed at different ground locations about 100 feet away from each camera, and whose ...
3
votes
0answers
79 views

Septic Tank Location Data for the Southeastern United States

I am compiling a database of septic tank locations to make some rough estimates of the magnitude of return flow to the groundwater system for the Floridan aquifer system. Ideally I would have a ...
3
votes
0answers
90 views

Printing/exporting WMTS tile layer with desired resolution / zoom level in QGIS

I have a project which uses WMTS and some vector layers in QGIS. I can freely zoom in and out, and tiles are refreshed with appropriate zoom level, just as expected. Now I would like to export part ...
3
votes
0answers
125 views

google map api v3 large/complex polygons

I have quite some large/complex polygons I'd like to overlay on a Google map. I can do this but wondered what the best/fastest way is to load them? I have tried using a KML but understand there are ...
3
votes
0answers
137 views

Geodatabase Connection to Oracle Active Data Guard Standby

Thank you in advance for any help you can provide. ENVIRONMENT Database Server: Oracle 11.2.0.2.0 Single-Instance Database on Windows Server 2003 R2 Enterprise 64-bit Oracle Active Data Guard for ...
3
votes
0answers
95 views

How to determine and send alert SMS for next bus stop in a GPS tracking system?

In my gps tracking system (PHP/MySql) I have got 5 Stops for a vehicle. Whenever the bus reaches stop 1, the passengers at stop 2 should get an SMS alert. And in the same way for the sops followed ...
3
votes
0answers
140 views

POSTGIS SQL - How do I remove (defined) sliver polygons

I would like assistance in writing SQL (for POSTGIS in postgresql) to remove sliver polygons (including long narrow slivers and some small irregular polygons that were erroneous 'gaps' in the original ...
3
votes
0answers
43 views

How to setup default toolbars and menu item?

I need to customize the UI for a group of users at another office. I want to turn off a bunch of toolbars and menus that are not needed. I know how to save my configurations (Settings -> ...
3
votes
0answers
67 views

Can't insert AI CS6 files as objects into ArcMap 10.1

In the past I have inserted Adobe Illustrator files into ArcMap as objects. My old version of AI was 8.0 and ArcMap was 9.2. Now I have arcmap 10.1 and AI CS6. When the process doesn't shut down ...
3
votes
0answers
75 views

Joining csv file to vector layer in Processing modeler?

I am trying to join a simple csv file of values to a vector layer within Processing modeler. The match would be on an id held by both files. The csv file has no geometry. I can do this easily in ...
3
votes
0answers
378 views

Reprojecting WGS 1984 Web Mercator (EPSG:3857) in Python with GDAL

I am reprojecting rasters in python using GDAL. I need to project several tiffs from geographic WGS 84 coordinates to WGS 1984 Web Mercator (Auxiliary Sphere), in order to use them later in Openlayers ...
3
votes
0answers
60 views

New SQL Monitor Showing Database Deadlocks, Should I be alarmed?

We recently installed a SQL Monitoring tool that is raising High Alerts for SQL Server Deadlocks on my SDE database at random times during the day. Using the information provided in the Alert I have ...
3
votes
0answers
37 views

What alternatives are there for hosting shapefiles too large for GeoCommons?

I've got a ~500M shapefile I'd like to place where it is publicly accessible and can be found via search. Specifically this dataset is the Bernalillo County, NM assessor parcel and tax database, which ...
3
votes
0answers
121 views

Ubuntu Newbie I am frustrated trying to install (all things GEOS) WEB-GIS

I am new to ubuntu SAUCY and I must confess the transition from windows has not been really easy for me. on windows everything seems pretty much straight forward but I am getting frustrated because It ...
3
votes
0answers
71 views

Creating a new raster based on pixel value of original raster using raster calculator but new layer is not evident

I am trying to create a new raster based on a current raster (w001001 - NVIS) which has one paletted band, with palette values ranging from 1 to 29, with each palette/value representing a vegetation ...
3
votes
0answers
66 views

Calculate field of view / angle of a point to a shapefile

I am trying to automate a calculation of the blocked fraction of a field of view from a point to a shapefile. I.e. find α in , such that α / 360 gives me the fraction of the field of view covered ...
3
votes
0answers
105 views

How to display Google Fusion Table map search result attributes

I am creating a map with Google Fusion Tables that will allow me to search for a local food product and display on a map the retailer that carries it. Along with showing on the map the location of ...
3
votes
0answers
62 views

Calculate surface elevation from DEM of pit and known volume with which it is being filled

I am using ArcGIS 10.1. I have a DEM of a pit. I have a known volume of material that I want to put in the pit. I want to know what the elevation of the flat surface of this material will be ...
3
votes
0answers
342 views

GDAL polygonize lines

I have a raster file containing roads (left image). I polygonize the raster file with GDAL (see the script below). In the end I like to have vector lines. However GDAL only gives me something like ...
3
votes
0answers
289 views

Hibernate Spatial - 'Invalid endian flag value encountered' Exception

I'm trying to run a simple query in Hibernate Spatial 4.0 on PostgreSQL 9.3. I have a number of objects in a table with latitude/longitude values, and I'm trying to query objects that fall within a ...
3
votes
0answers
81 views

How can I convert LIDAR based measurement to UTM coordinate?

I have lidar based measurement with azimuth elevation and range, I would like to convert this data to UTM coordinate. I know the position of the lidar in UTM coordinate system, so I developed the ...
3
votes
0answers
45 views

How to use GeoServer securely in production with Tomcat Policies?

I want to use GeoServer (first testing, then production) but we have to use Tomcat policies for security reasons. I have already tried to deploy GeoServer with the security manager enabled, but ...
3
votes
0answers
210 views

GeoServer Rendering Buffer Issue

I am running GeoServer 2.4.1 (Recently Upgraded) Server: Windows 2008R2, 2Gb Ram (Has been running perfectly until now) My WMS Rendering has slowed down significantly. I am unsure if this is a ...
3
votes
0answers
193 views

ArcGIS REST Server Object Extension Examples

Hi I'm looking for a few good examples of a REST SOE showing more than the common ESRI sample. I'd like to see some RestOperation samples as well and a few different TryGet statements (ie. returning ...
3
votes
0answers
83 views

What is a good way to retrieve geographic data along with imgs and mp3 files?

I'm working in the Django backend of an audio guide for tourism with mobile devices. Basically, the client (Phonegap app for Android and iOS) can follow a route over a map (Leaflet client) and see ...
3
votes
0answers
54 views

QGIS 2.0 WMTS Issue

When using a WMTS within QGIS 2.0 (using the "?SERVICE=WMTS&REQUEST=GetCapabilities" addition) only one tile per layer is loading. The WMTS works in other GIS software and this problem would ...
3
votes
0answers
144 views

converting a distance to a map distance

I have a point and a polyline. I need to find the perpendicular distance between each segment of the polyline and the point. By each segemnt of the polyline I mean that, each polyline may contain more ...
3
votes
0answers
307 views

Fortifying re-projected shapefile for ggplot2 in R

I have a shapefile of US county boundaries which I got from the NHGIS. I can load the file using the rgdal package and see information about it: library(rgdal) shp_1860 <- readOGR("shp", ...
3
votes
0answers
222 views

R with ggplot2/ggmap - How to load a png image as a map

I am trying to find a workaround for ggmap's missing support of world maps (i.e. you can't create any maps that show latitudes > 80°, due to idiosyncrasies in the mapproj package). To a limited extend ...
3
votes
0answers
118 views

QGIS Select Single Feature not correct in attribute table

For some reason, QGIS is not displaying the correct row of my data when I click on a feature with "Select Single Feature" or even the other select tools. I have a point database linked from mysql. ...

15 30 50 per page