0
votes
1answer
222 views

error using GRASS v.proj

When I try to use v.proj to reproject my map from OSGB to GoogleMaps coord system I get this error.... Reprojecting primitives: pj_transform() failed: failed to load datum shift file ERROR: Error in ...
2
votes
0answers
85 views

Are there any naming conventions for aerial imagery?

Do GIS projects involving high resolution NAIP quarter quad imagery typically use the USGSID code and qq (e.g. 3910232ne) or the GNIS code and qq (e.g. 39102e1ne) to organize data? I can't seem to ...
3
votes
2answers
3k views

how to convert qgis generated tiff images into jpg/jpeg using gdal command line utilities?

I want to develop a web portal that will show the images dynamically produced by qgis . but qgis provided tiff images are too big in size and it is not possible to show it on website using image ...
-1
votes
1answer
1k views

Creating an AttributeInspector via JavaScript API v2.7

I'm trying to display an AttributeInspector when I click on an object from a layer. I'm following this sample, but I cannot get it to work. Here is my sample code: dojo.require("esri.map"); ...
1
vote
1answer
517 views

Merge two maps with OR operation in GRASS

I have two vector maps. The two maps cover the same area but are split up into polygons differently (i.e. if you were to imagine one map placed above the other, the lines defining the polygons would ...
5
votes
1answer
180 views

Creating Relationship classes

I am trying to create relationship classes in a Feature Dataset. The Relationship Class created successfully, I want when I update a record in the Origin table the Destination's would be updated. But ...
0
votes
1answer
107 views

create geometry in arcpad

i want to create a point geometry in ArcPad 10 VBScript, to make custom feature drawing. so i want create point geometry then record.shape = point or records.AddNew(point) i want to create ...
8
votes
0answers
346 views

Two machines running the same arcpy based software - only one is leaking memory [closed]

Ok, so I'm running a rather large Python application based on arcpy on two separate machines - one of them is leaking memory and one is not. Both are running the same operation in the software. The ...
1
vote
0answers
21 views

Rasterband Casting Probem [closed]

We have a program that was previously using ArcGIS 9.3 and we recently updated it to ArcGIS 10.0. The program was working before with a line of code that cast an object as a RasterBand. Now we are ...
7
votes
4answers
7k views

What ArcGIS geoprocessing tools support exporting tabular data to CSV?

I have found that most if not all geoprocessing tools that allow tabular output are limited to geodatabase tables and DBF files for supported output formats. Are there any that also support CSV ...
4
votes
3answers
7k views

Solving the Point in Polygon Problem Using Google Maps and Fusion Tables

The Point-In-Polygon problem is fairly well documented on this forum. My question is if there is a way to use Google's free tools, i.e. Google Maps, Fusion Tables, and possibly Google Refine, to solve ...
1
vote
1answer
233 views

v.dissolve renames the attribute table column and does not produce a dbf

When I run v.dissolve on my vector... v.dissolve --o input=pass2@mapset1 layer=1 column=fttcp output=pass3 The dissolving appears to work but the column name in the attribute table has changed from ...
3
votes
1answer
869 views

Uninstall opengeo suite in Ubuntu

How can I properly uninstall the complete opengeo suite in my Ubuntu 12.04? I had installed opengeo suite but it seems there was some error in the PostGIS extension to the Postgres of the OpenGeo ...
2
votes
2answers
297 views

Losing large portions of elevation contours from QGIS to PDF

Please forgive me as I'm new to GIS and all this might be a silly question, the wrong place for this question, or a hack way of going about what I'm getting at. So any suggestions on better practice ...
1
vote
1answer
955 views

How can I change mouse icon on hover a WMS layer feature using OpenLayers and GeoServer

my unfinish app is: "http://190.5.81.197/MAPA_OL/mapa/matricula.html#" i just want to know how cant I change mouse icon when the mouse is over a marker on a wms layer i am using goserver to create ...
1
vote
0answers
266 views

Detecting If A Coordinate Is Near Polygon Edges In Google Maps API

Is there a way to add a test to see if a Lat/Long coordinate is near the edge of a polygon? I am building very complicated polygons that have rivers and roads as borders. Because of this, it is very ...
7
votes
1answer
5k views

Export all coded value domains from a geodatabase

On the ESRI-L mailing list this morning there was a question about how to see or export all the coded value domains for a geodatabase. The goal is to present the content of the domains in a tabular ...
1
vote
0answers
126 views

how to set in arcgis network analysis that use every road segment max m times? [closed]

excuse me if my english ins't good. I have one incident and 120 facility. i wanna set criteria in Arcgis network analysis that if any road segment used for example m times, for other route doesn't use ...
3
votes
1answer
173 views

Is it possible to mimic ArcPublisher with PDF or similar?

I want to provide mapping output in a format that mimics the delivery provided by ArcPublisher and wonder if anybody has any experience in this. For instance, the PDF format now supports layers ...
0
votes
2answers
1k views

Calculating shape perimeter/area per zone in ArcGis 10

How can I calculate geometrical features of polygon (perimeter and area) per zone (similar to zonal stats for rasters)? I have a square fishnet (approx 20x35, 1 square kilometer each) and I need to ...
0
votes
0answers
2k views

GeoServer/OpenLayers: Overlay WMS on Bing Map

I am coming from the ESRI side and learning GeoServer/OpenLayers. It seems the only way to overlay one layer on Bing or the like is to use WFS. In my opinion, WFS transfers a lot of data to the client ...
6
votes
5answers
12k views

How to create a new layer from a selection in QGIS?

I have been using ArcMap for the last three years. But I am now considering switching to Quantum-GIS. Is it possible to create layers from selection in QGIS? I am using QGIS 1.7.4-Wroclaw. UPDATE: ...
1
vote
1answer
365 views

ERDAS Imagine batch wizard edit replacement pattern help

I'm using ERDAS Imagine to batch produce NDVIs from NAIP imagery. I need to also replace the default file name (e.g. "m_3610132_nw_14_1_20100503") with a user friendly file name (e.g. 3610132nw). ...
10
votes
7answers
828 views

Free / Open source GIS Education sources

I'm looking for free / open source GIS education sources for advanced GIS users. Specifically sources that cover programming, spatial analysis, modeling, spatial databases / data management. I use ...
1
vote
1answer
294 views

ArcGis - batch frequency of point groups to single table?

I'm kind of new in the GIS world but have been finding my way around in forums and help places up to now. Still, there's one task I need to perform that I cannot get my head around it or even find ...
2
votes
2answers
558 views

how we create line between two cordinates on polymap?

I am working on d3 and polymaps, I plot map and create circle on the given latitude and longitude which retrieves from the JSON file but now I want to connect those circles with line. I tried to do it ...
2
votes
1answer
432 views

Recreating A Lat/Long Grid Using a Specified Formula

I'm trying to recreate the Gridded Mercury emissions 2000 (0.5 x 0.5 degree grid) designed by the Arctic Monitoring and Assessment Programme. The file is in ASCII format, but without any coordinates. ...
0
votes
2answers
186 views

How do you pass parameters for Proj4js implementation with OpenLayers

I am using Proj4js along with OpenLayers for the transformation of x,y (projection type is Transverse Mercator) to long, lat. While executing "inverse()" method what I noticed that in tmerc.js some ...
6
votes
1answer
3k views

PostGIS - 1.5 to 2.0 easy update

I have a PostGIS 1.5 database and want to update to 2.0. I read that because this is major release I have to follow the 'Hard update' procedure. However the spatial data I have is only test data so I ...
6
votes
1answer
4k views

Analyzing Flow direction in Geometric Networks in ArcGIS

I have a task in ArcGIS which involves using Geometric Network and right now I am experimenting with Set Flow direction function from Utility Network Analyst toolbar in ArcMap. I've read section Flow ...
5
votes
1answer
619 views

How to create tiles with points from MongoDB?

I have a (potentially) large data set stored in MongoDB. Each record is just lat, lon and some float-point value. Each pair of lat and lon is unique, but the whole set is not covering the Earth, there ...
3
votes
1answer
381 views

Draw graphic on screen without requiring a double click to finish sketch

I am trying to get the user to draw a line(only 2 vertices) on the screen(just like the georeferencing link/spatial adjustment link). I got the below snippet from ESRI website which does give me a ...
1
vote
0answers
561 views

How to display indoor map using OpenLayers?

I created my osm file in JOSM, and i imported it to my database by osm2pgsql tool. I created new layer in my osm.xml file, which selecting data with query: select way from planet_osm_line, (select ...
4
votes
1answer
278 views

How to update attribute values of points outside an area?

I have two datasets in PostGIS 1.5 (on Postgres 9.1) one of polygons and one of points. I am hoping to create a SQL command that will select all of the points in a dataset that are not within of the ...
1
vote
1answer
571 views

How to create a worldfile by bounding box?

I need to create a worldfile from Bigmap Application. I've successfully to grab a pack of PNG tiles and the pearl app mosaicking all in one. The BigMap site shows the raster bounding box and util ...
1
vote
1answer
194 views

QGIS not reading colormap from hand-edited .qgs file

I have a set of rasters which store solar radiation incidence over the course of a year. In QGIS, I want to map the same extent, and with the same reference features, varying only the solar raster ...
3
votes
2answers
451 views

Testing Tools For Simulating User Interaction - Especially Map Panning

Can anyone suggest any tools that can simulate users panning around in a map? I have used tools such as SoapUI to do load testing, but never anything to simulate users. In case it matters, the app I ...
6
votes
1answer
434 views

Releasing GeoServer WFS-T Feature Lock

For some reason I'm having trouble finding any documentation about releasing feature locks in a GeoServer WFS (or any WFS for that matter). I can easily request a FeatureLock with a request like this ...
1
vote
1answer
330 views

How to Make QGIS on Windows use Spatialite 3.0 instead of 2.4?

I spent all afternoon trying to figure out why my complex triggers are working fine in Spatialite-GUI but QGIS refuses to write to the layer. Finally remembered I ran into a similar issue a few ...
3
votes
1answer
181 views

is the GPS network free or available for any device?

I have a question (I'm really sorry if is kind of dumb question). But if I have a device with GPS (smarthphone,pda,pocket pc, etc) Does the device need any additional service to enable GPS data? I ...
5
votes
1answer
556 views

How to compute the distance between centroids and polygons?

Suppose I have an Excel spreadsheet with the latitude and longitude of the centroid of every county in the U.S. I want to know the shortest distance from each county to any part of Oklahoma ...
1
vote
2answers
306 views

Clip raster to multi raster

I have a raster aerial photo. I have county wide parcel data. I want to clip/screen shot the raster at each individual parcel. Think of this application - a post card with an image of your house ...
2
votes
1answer
585 views

How to transpose the lat/lon coordinates of a shapefile?

I need X to be Y and Y to be X (switching lat/long) within the polygon shapefile. If it were a point shapefile I know I could simply reverse the lat/long or x/y parameter and import from a table. I'm ...
3
votes
1answer
220 views

Is there a standard st_relation_readable() function for translate DE-9IM strings?

Spatial databases, such as PostGIS, implement the DE-9IM model with function st_relate(), which returns a string with domain of {0,1,2,F}, meaning 0=point, 1=line, 2=area, and F="empty set"... See ...
2
votes
1answer
574 views

PostGIS - table with 3d points with fast ordering by distance

I am pretty new to PostGIS and I am trying to solve the following problem. I need a table with 3D points (x,y,z) that will contain around 1-10million points. I want to be able to efficiently ask the ...
1
vote
0answers
115 views

How to reduce transparency for Openlayers using Map Composer?

Increasing transparency of Openlayers will increase the contrast of others layers. For sure, it will increase the esthetical aspect of maps.
0
votes
0answers
402 views

Power line and/or power station vector (shapefile) data in Turkey

Looking for transmission power line / power station vector (shapefile) data in the country of Turkey. KML/KMZ files would also work. Found great vector data here yesterday for roads, rivers, etc: ...
1
vote
1answer
122 views

How to select data inside a tile?

I have an OpenStreetMap PostGIS database and would like to select specific data (for example all shops) of each tile (on a defined zoomlevel) on the planet. Is this possible to achieve and if yes, ...
2
votes
1answer
964 views

Why are Low Values showing as hot spots?

Im running hotspot analysis on point data, attempting to examine pollution emissions. I ran spatial autocorrelation first in order to determine the default distance threshold to use in the fixed ...
1
vote
1answer
183 views

How to move the last vertex till the last angle is squared?

I have problem using Orthogonal Digitizing button from CAD Tools plugin menu. It moves the first point of the polygon by holding ctrl key pressed and pressing right mouse button till the last angle is ...

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