3
votes
0answers
61 views

Editing PostGIS topology in a web browser

I am trying to conceptualize the best process for editing topology from PostGIS in a web browser. Ideally what I would like to accomplish is the loading of a topology (imagine the lower 48 states of ...
3
votes
0answers
31 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
27 views

Why does the QgsVectorFileWriter have probelms creating vector files?

I am using QGis 2.0.1 and have tried to create a new GIS feature file (SQLite, Spatialite, and Shapefile) of a subset of the data. I am then saving a copy of the style of this layer and applying it to ...
3
votes
0answers
21 views

Continuous color band for a raster legend in QGIS composer legend

I'm looking for a way to insert continuous colour legend for a raster layer. I managed to create discrete symbols with values along the bar, but I would like to have a continuous bar with some values ...
3
votes
0answers
12 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
36 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
63 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
20 views

How can you prevent ogr2ogr from truncating trailing zeros when setting coordinate_precision=0 and saving to GeoJSON?

This weekend I started using ogr2ogr and discovered that it's a great tool for converting from one spatial reference system to another. I used it to convert a shapefile to GeoJSON, from WGS84 to a ...
3
votes
0answers
51 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
58 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
49 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
96 views

How to configure QGIS and SAGA on Ubuntu (12.04 and others)?

During the past weeks, I have tried QGIS to recognize SAGA via the processing toolbox, both being installed from the ubuntugis-unstable repository. I have tried this on several virtual ubuntu ...
3
votes
0answers
104 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
86 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
62 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
82 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
105 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
74 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
87 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
34 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
48 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
168 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
44 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
30 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
78 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
61 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
76 views

Why does QGIS 2.0 and SQL Server say Data source name not found and no default driver specified?

I've just started using QGIS 2.0 after using 1.8 for sometime. However I'm having an issue getting a SQL Server connection, I'm using the same settings as as used in 1.8 but I keep gettting an error ...
3
votes
0answers
87 views

tablejoin in qgis 2.x adds name of table to columnheader attributetable

When joining a table to a shapefile through 'layer properties > joins' the columnheader of the attributetable shows the name of the file you joined. eg.: the name of the table is: STAVAZA3 the table ...
3
votes
0answers
45 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 http://i.imgur.com/2rWYC1O.png , such that α / 360 gives me the fraction of ...
3
votes
0answers
88 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
50 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
63 views

How can I create a form so the user has to be authenticated to access a project?

I have a login form in QGIS and when it is loaded, python gives me an error for, apparently, not recognizing the findchild part. This is due to the fact that the form isn't loaded before the script is ...
3
votes
0answers
101 views

ArcGIS - Custom, rule-based borders for polygons?

I've been working with a map that looks something like this: Wherever two polygons of different types (shown above with different colors) meet there needs to be a thick dashed line between them. ...
3
votes
0answers
58 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
39 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
43 views

EPSG code as dynamic text in ArcGIS

Is it possible to get ArcGIS to show the EPSG code for a coordinate system as dynamic text? The default text is quite verbose (see below), and I think just showing the "Coordinate System" is probably ...
3
votes
0answers
134 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
80 views

How to build a model with multivalue input and output in dynamic folders?

I am trying to build a model that gets a multivalue as an Input which is located in different folders within a main folder, and stores the Output in new folders that have the same structure like in ...
3
votes
0answers
56 views

How to avoid pop-up when having multiple hyperlink layers in ArcGIS

In ArcMap 10.0, I have a layer of country polygons and a layer of city points. Both layers have a hyperlink setup, and it all works as expected. The only drawback is that when I select a city, it ...
3
votes
0answers
124 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
106 views

How to select features based upon multiple values in graphical modeler?

I'm trying to create a basic model using QGIS, the QGIS graphical modeler and the sextante toolbar. In part of the model, I need to select features based upon multiple attribute values (for example - ...
3
votes
0answers
45 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
47 views

How to automate creation of Network Turn Features from line segments?

I have a road network which I will add Turn features in. From the road network, I have created a model that cuts out the line segments where the turn features will be located. My problem is how to ...
3
votes
0answers
129 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
91 views

Styling SLD Files for Geoserver XML Editors and Notepad++

I am currently using Notebook++ to edit my GeoServer Styles (Yep, I like to do them the hard way). This is a Windows Environment. I also use XML Copy and XML Notepad 2007 Editor but so far I have ...
3
votes
0answers
222 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
183 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
92 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. ...
3
votes
0answers
101 views

How can I make use of the $scale function in QGIS data defined properties?

In QGIS 2.0 I can use with success the $scale function in the labeling expressions. When I tried to use it for symbolizing in the data defined properties it has a value of 0. Is there a way to make ...
3
votes
0answers
65 views

Filtered SimpleFeatureCollection really slow on Map and other operations

I'm working with a shapefile having about 85.000 features. I need to select some of these using a filter and then showing these on a map. Now... If I draw the entire shapefile's features the creation ...

15 30 50 per page