2
votes
1answer
564 views

Returned BBOX of a WMS with varying aspect ratio

WMS GetMap queries take a BBOX parameter for the map and a WIDTH and HEIGHT parameter for the image. If the aspect ratio of the image (WIDTH/HEIGHT) doesn't match the aspect ratio of the BBOX ...
2
votes
1answer
685 views

symbol created from emf still acts like a picture and blocks out surrounding vector data

I have a lot of CAD blocks that I want to convert to symbol markers to use in ArcGIS 10. Everything I read says the emf is converted to vector data, but that does not seem to be the case. Procedure: ...
0
votes
1answer
394 views

How to convert the python plugins into dll file for QGIS application?

How to convert the python plugins into dll files for QGis application? Thanks in advance.
3
votes
1answer
334 views

List Elements or Datasets of a given Layer

I am sorry of this might sound like a noob question but I cannot find any answer from google. I used arcpy to do batch processing of Network Analyst - Make Service Area layer of thousand of stores. ...
5
votes
3answers
114 views

Please help me identify this CRS. How could I identify this myself in the future?

I'm trying to georeference this map, but I don't recognise the CRS. It is for a region of Tanzania. Here is the image on imgur in case Stack Exchange compresses the image. How would I go about ...
1
vote
1answer
980 views

How do I delete specific graphics on the map using arcobjects

I am writing a small application that allows the user to click on the map, and it will create 3 buffers (these are graphics using the IElement interface) at specified distances. What I want to do is ...
1
vote
1answer
789 views

Where is Table Manager in QGIS 1.7.x?

I would like to ask you, if is available funcionality like "Table Manager" for QGIS 1.7.x? I need to move fields in attribute table and then save changes. I don't see "Table Manager" or something ...
2
votes
2answers
951 views

ArcGIS Server simple link with SQL Server database

I am using ArcGIS Server 10 to create Rich Internet Application with embeded Maps. Basicaly, I created an Optimized Map Service on ArcGIS Server, from an MXD file (produced with Arc Map). I have ...
2
votes
0answers
247 views

How can I apply “natural breaks” classification to a raster symbology in QGIS?

Anyone knows how can I apply "natural breaks" to a raster symbology in QGIS? Cause I only see the "Equal interval" option.. I'm using QGIS 1.9
3
votes
1answer
103 views

How to check that a point is outside of a route?

I am newbie in PostGIS and also GIS particularly. I need to check that a vehicle is outside of a route. This route has been defined in advance, and of course it stores in a table: RROUTEDETAIL. This ...
2
votes
0answers
198 views

Background no data areas appearing where raster and vector data meet in Geoserver

I'm using Geoserver (2.1) to load raster data with the Imagemosaic plugin and then using Geowebcache to cut this data into tiles across the full coverage of the British National Grid. However the data ...
1
vote
0answers
25 views

How to rotate multiple polygons about their respective anchor points [duplicate]

Possible Duplicate: Rotate a feature in ArcGIS 10 I have a set of polygons, which are to be rotated in eight directions, about their respective fixed anchor points. I am able to do so for ...
1
vote
2answers
138 views

Fetching field values from uncommitted features on Qgis

I'm trying to fetch a feature's field value on Qgis, I use QgsFeature.attributeMap().value(cont int & key).toDouble() This works fine for committed features but it always returns " 0 " if the ...
3
votes
4answers
1k views

can't read attribute from map file (.kml) using openlayers

I want to create thematic maps using openlayer with kml map. but when i run the code, color and label thematic maps of the polygon can't show up. instead writing out undefined. what's the cause? are ...
1
vote
2answers
62 views

2 Similar Queries Run at Vastly Different Speed in a Very Surprising Way

I have to be very careful here. Both queries are so similar that the only different is the area searched. What's surprising is the query that run on BIGGER AREA, and naturally yield MORE ROWS, is the ...
1
vote
1answer
540 views

how do I get php to connect automatically to GeoServer?

how do I get php to connect automatically to GeoServer?? so I do not need to go into GeoServer manually by entering the username and password. And how to queries on PostGIS can directly publish and ...
10
votes
3answers
1k views

Google Drive and Backing-up/Syncing GIS Data

Seeing that many of us have three computers these days (e.g.. work, home and laptop) is anyone using Google Drive as their main file repository for GIS data? I like the idea of backing everything up ...
0
votes
0answers
110 views

How to determine Earth co-ordinates?

I just read about latitudes and longitudes. I read latitudes are imaginary lines that run around the earth and longitudes are lines that run around from top to bottom. Using this system: 1. ...
3
votes
2answers
612 views

How to select polygon features that have their centers outside of another polygon feature class

Since I only have Incorporated area feature class, how can I select census blocks that are in unincorporated area? Or not within any incorporated areas? Thank you. John
5
votes
3answers
8k views

custom Layer Switcher style in openlayers

I use this example to customized my layer switcher in openlayers.But I want to change the position,width and height of layer switcher.I know it relates to CSS.I change some numbers to get some ...
4
votes
2answers
2k views

Perform a spatial join in C# with ArcObjects

I feel like this has to be on the internet somewhere, but I haven't been able to find it. I'm attempting to perform a spatial join on a polygon and point layer. My goal is to push the polygon's ID ...
1
vote
1answer
206 views

How show some fields only when using WMSGetFeatureInfo?

How to show some important field only when using WMSGetFeatureInfo.I use this example. When I click on maps it show all the fields of attribute table.What part should I modify in above mentioned code. ...
4
votes
1answer
158 views

What is the most appropriate Projection for the Gulf coast region?

What are the most appropriate datum and projection I could use for the Gulf coast region - spanning Louisiana, Mississippi, Alabama, and Florida? I have to analyze block group data along the coast. ...
1
vote
2answers
445 views

How to create Online IDW(Inverse Distance Weighted) Interpolation?

I have some point data which store as JSON.As follow: [["Lat":"12.12","Long":"23.23","ZValue":"123"],...]. I tried to interpolate them as contour line and displayed them on my ...
6
votes
3answers
683 views

How to generate geodesic linestring from two points in C#

I'm looking for a FREE C# class, library or set of functions that will allow me to generate a geodesic linestring (or array of vertices, whatever) from two decimal degree points. I've found ...
2
votes
1answer
450 views

QGIS apply style to shapefile

I'd like to create a Categorized style in QGIS, classify with it data in a shapefile and then save the shapefile with the new categorized style. Is it possible?
2
votes
1answer
447 views

Querying Additional Styles from Geoserver

I'm using GeoServer 2.1.2, and I've got a layer to which I've applied added additional WMS styles. However, I'm having trouble working out how to query the layer and retrieve the list of available ...
3
votes
1answer
204 views

Making thematic map for each column in table using ArcGIS Desktop?

I have a table with header like LocationId, Jan, Feb, Mar,.....Dec I would like to make a graduated symbol map for all the locationIDs for each month, and make an output as a jpg/pdf file. What is ...
0
votes
1answer
393 views

ArcGIS Viewer for Flex UniqueValueRenderer error

Trying to compile (in 3.0) an ArcGIS Flexviewer widget that was created in v2.4 of the AGS api for flex, and receive a UniqueValueRenderer error as follows. Code is below also. Encountered errors or ...
1
vote
2answers
176 views

How to edit several layers simultaneously?

I have the land occupation of an area and a layer for each year : 2005-2006-2007-2008...2010. Theses are polygons. There is errors on layers which are common to all of them. For instance: There's a ...
5
votes
2answers
1k views

Best Program to use for DEM data?

I need to estimate the elevation at various access points of some rivers in South Carolina. I use the elevation information to calculate the average gradient (feet/mile) between two access points. The ...
2
votes
0answers
198 views

QGIS: WMS misalignment

I am experiencing a small screen space offset when using a WMS layer (origin is GeoServer 2.1.4): The image shows a red square which is the top left pixel of a tile (GeoTIFF). An exact copy of the ...
8
votes
1answer
2k views

Computational most efficient way to convert Cartesian to Geodetic Coordinates

As far as I understand the literature there are several ways to convert a set of geoecentric cartesian coordinates to geodetic coordinates Bowring, 1976 Borkowski, 1989 Lin & Wang, 1995 Toms, ...
1
vote
0answers
360 views

QGIS & WMS: Different aspect ratio between width/height and bbox

I am experiencing a small screen space offset when using a WMS layer (origin is GeoServer 2.1.4). Looking at the requests from QGIS (1.7.4) to my GeoServer I realised that the aspect ratio between the ...
4
votes
4answers
878 views

Is there a way to programatically force RGB (3 bands) in a raster with arcpy?

I'd like to include conversion to a 3 band RGB raster in a script to prepare multiple DEMs for image processing. The input files are rasters extracted from a raster mosaic. The manual option is to ...
3
votes
1answer
322 views

What web server is embedded in ArcGIS 10.1 for Server?

Esri seems to have a new embedded webserver in ArcGIS 10.1 for Server. Does anyone know what technology they have used to build it?
1
vote
0answers
1k views

Which Open Source GIS Software is preferable either QGIS, mapWindow or gvSIG?

Which open source GIS software is preferable: QGIS, mapWindow or gvSIG. On the basis of: GIS analysis. Digitization. Quality checking.(Data correction). Store of data(i.e. storage in db as well as ...
1
vote
3answers
640 views

How to calculate forest area of a bitmap (jpeg) map?

I have a map of 1:50,000 scale map in .jpg format. Can i calculate the land area of forest,lakes etc from arcmap.Anybody can give me the step to do it? And I want to know what is the coordinate ...
2
votes
2answers
689 views

ArcGIS REST export map features as geoJSON

Is it possible to export the features from a map as geoJSON using an ArcGIS REST service? I'm trying to make a vector layer in OpenLayers based on the output from the map's present view based on a ...
2
votes
1answer
2k views

Publish PostGIS raster to geoserver

I have a database of raster and vector and I want to use them in my webmapping. There is not a problem to publish the vector using geoserver but I can't publish my raster. Is there possibility to ...
1
vote
2answers
1k views

Prevent layer from WMSGetFeatureInfo request on openlayers web map

I use this example code get feature info from my openlayers web map.I add 4 layers to map including raster image as base map. But i don't need feature info from that raster layer.But when clicking on ...
4
votes
1answer
73 views

looking to integrate R-trees into AlchemyDB

I am the author of AlchemyDB: http://code.google.com/p/alchemydatabase/ I would very much like to add geospatial indexing in the form of R-trees (most likely) and need some advice on whether or not ...
1
vote
0answers
90 views

Why are the special fonts in a .mxd-project not used/found?

I have a .mxd-project file from a customer which uses special fonts (TrueType). I installed these fonts in Windows but my application (mostly a MapControl) doesn't use these fonts for displaying. I ...
0
votes
2answers
415 views

How to retrieve a single polygon from a multipolygon layer in GeoServer

I have a multipolygon layer in GeoServer. The layer represents states within a country. I want to enable a user to search for a specific state, and then only the selected state to be displayed on the ...
1
vote
2answers
305 views

How to have a nullable field included in a shapefile using the Geotools library?

I am trying to add a new field to a shapefile and need it to store null values. But by using SimpleFeatureTypeBuilder from the Geotools library and then using the Add command, it is not giving the ...
0
votes
0answers
54 views

Shapefile to ArcGIS JavaScript JSON format? [duplicate]

Possible Duplicate: How to convert SHP into GPX or JSON? We're in the proces of adding a new feature to our Web Application where we employ the use of ESRI's ArcGIS Javascript API alongside ...
1
vote
3answers
863 views

Automatically assign numbers to point file in various order in QGIS

I know how to automatically assign numbers to a new point files using the $rownum function in the field calculator. However it does it from the top-left over and down like reading a book. I could ...
0
votes
1answer
187 views

Will there be QGIS for Playbook?

Does anyone know if a mobile version of QGIS is planned for the Blackberry Playbook. I know there is an android version, I tried converting it to .bar and gave up when it wouldn't load because it ...
0
votes
1answer
471 views

Is dynamically changing a datasource possible in arcgis js api?

I've posted a related question is in the ArcGIS Desktop forums, but hasn't gotten any replies yet. In that case, I would like tackle this in another way, which is dynamically changing a datasource ...
4
votes
1answer
4k views

automatic zoom to layer in arcgis js api

I'm trying to zoom to layer automatically as soon as the map finishes loading using the guide here. To be clear, I'm only loading one layer and just want to zoom in on one of the layers provided by ...

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