3
votes
3answers
687 views

Which open source software to create desktop interface for Geo-processing tools?

I want to create an desktop interface to create geo-processing tool and that to using Open source GIS software. I will be using Postgresql and postgis too to save and retrieve data for operations. I ...
1
vote
1answer
261 views

Is there any open-source building squaring tool?

I have a set of detached building polygons and i can merge them together in order to form a single building polygon. However, when merged output polygon may not preserve the orthogonality of building ...
4
votes
1answer
886 views

Is it possible to change where the Database connection folder is looking at?

In my workplace, we have just upgraded to Windows 7, we have a roaming profile, so all the files that are in the Application Data folder are in a folder called "\username\redirect\Folders.." also in ...
4
votes
2answers
930 views

Spatial Definition Queries?

Is it possible to spatially pre-clip layers (say with a IPolygon object) before they are loaded into ArcMap - a bit like a query definition but spatial?? Also I need to do this for raster data? ...
3
votes
2answers
2k views

From point to Grid of polygones or polylines

Is it possible to reconstruct a grid of polygones or polylines from the centroids? I am looking for a arcGIS tool or script that will allow me to reconstruct a grid of polygons or polylines from ...
5
votes
1answer
2k views

How can i delete multiple nodes, for a polygon, with Quantum GIS?

I know how to select a single node and delete it. I can also click-drag to select MULTIPLE nodes. But if i click delete, only one node (from the higlighted list) is removed. Can I delete all the ...
1
vote
1answer
10k views

Computing Shortest Distance using Google Map v3 and Openlayers

How to compute shortest route between two points in google map that user selects and provide all routes from source to destination in Transport system?
1
vote
3answers
3k views

Compute Shortest Distance(s) between two points

I am using Mapinfo 11. I want user to be able to find shortest route between two points so that user can travel from point A to point B using these path. Any Idea how to achieve this? Edit: I need to ...
2
votes
2answers
1k views

Labeling points numerically in ArcGIS Desktop?

I just created a points Shapefile, with 300 points. Using ArcGIS Desktop 9.3 I now need to label all of them numerically. Is there a way of labelling all of them, instead of me going to the ...
4
votes
1answer
310 views

How to keep web map from displaying content from 2 zoom levels at the same time?

So I'm making a web app with a map that combines several layers (and dynamically toggles them off & on). I've made these layers in TileMill, exported them to .mbtiles files, and I'm serving them ...
4
votes
2answers
1k views

Beginner needs suggestions on map clicks and geojson

I'm a beginner with programming, and javascript. I went to the FOSS4G-NA conference and was very inspired to learn more. I'm trying to learn PostGIS, and have come across a very useful tutorial for ...
1
vote
1answer
329 views

Looking for QGIS Presentation info

I'm preparing a presentation of QGIS to release of the brazilian QGIS user guide. Thus, I would like insert some information about QGIS in global scale. Something like Tim's qgis-for-humanity ...
3
votes
1answer
2k views

ESRI File Geodatabase - Trying to use CURRENT TIME in Definition Query

Is it me, or are the date functions in the file geodatabase a total nightmare. Anyway, I am trying to set up a fairly simple definition query that contains a subquery with a date comparison. My ...
5
votes
2answers
3k views

Use Arcgis.com map package as a web map?

In Arcmap 10 there is a menu item to create a map package and upload to Arcgis Online (File > Create Map Package > upload to...). That works fairly smoothly, if a tad slow sometimes. However once ...
5
votes
1answer
649 views

GIS-based reporting and maintenance tool

Background Conceptually, I am looking for a tool, or suite of software tools that can be readily integrated to help browse data using a GIS-based map (such as Google Maps). The proposed architecture ...
5
votes
2answers
309 views

Raster calculation confusion

I need to do some raster calculation, I've been trying to make it work but I am not sure everything is working properly. I need to apply a formula, but I am unsure if I am doing it properly. The ...
2
votes
2answers
565 views

Looking for python/VB script to insert a new uniqe field

Is there any phyton/VB script which will add a field to shapefile which will be corresponding to first three characters from the shapefile name ? I am working in modelbuilder and arcgis 10. Thanks ...
3
votes
1answer
160 views

Can I customize a Google Maps layer in terms of content?

I don't want all features that come with the Google street layer. I just want basic infrastructure like roads, national parks, cities, streets with their names, etc. Everything that is public is OK. I ...
5
votes
1answer
4k views

Exporting .jpg files from data driven pages in Arcmap

I have generated about 90 maps through data driven pages(ArcGIS 10.0). I now want to export them as .jpg files in either landscape or portrait format. I tried python but it is not working, it worked ...
4
votes
3answers
310 views

Where can I find a data model for land use?

Does anyone know where I can find a data model for land use? I know about data models available on Esri Support site. Are there any other resources?
1
vote
1answer
942 views

Exported ArcMap crashes ArcPad 10

I'm a computer scientist, and not really familiar with all the terms related to GIS, please forgive me. I have been given an ArcMap project that consists, what I believe are raster layers, aligned ...
2
votes
1answer
1k views

Is it possible to integrate a route planner into QGIS?

I am looking for an open source GIS and now asking myself if it is possible to integrate a route planner into QGIS. The route planner should be able to calculate the distance from one position in the ...
19
votes
2answers
977 views

Hand drawn sketchy symbology styles for GIS software

Often times in planning projects, a hand drawn, sketchy look is desirable in order to convey the preliminary nature of a project. Is anyone aware of any utilities/plugins for desktop GIS software (...
2
votes
2answers
452 views

How to shift the Map a little bit?

I'm having trouble with two maps, both UTM33N/WGS84. They should be exactly on top of each other but there is a slight shift between them of probably a few hundred meters or so. I Tried to adjust ...
1
vote
1answer
547 views

Markers not displayed in xhtml in OpenLayers

I just started working with OpenLayers because I want to include a map on my JSF page (.xhtml files). I want to use the same feature that is demonstrated in this example: http://openlayers.org/dev/...
2
votes
2answers
7k views

Minimum system requirements for ArcGIS on Mac

Just looking to buy a new-ish computer for study for my PhD. I will be using ArcGIS. I know the ideally it would be best to buy all the memory and ram I can afford but I am self-funding on a low ...
16
votes
3answers
5k views

Which remote sensing satellite is best used for vegetation extent mapping

I'm currently writing an assignment for my remote sensing class and while I think I have correct answer was wondering what people who do this stuff for a living think. The question is: which ...
0
votes
1answer
643 views

Changes made using wfs-t and GeoExt don't get saved to PostGIS

I'm using GeoExt to display and edit a vector layer from GeoServer (running with Apache Tomcat) but if I modify the shape of an existing polygon (or create a new one but I'm trying not to leap ahead ...
1
vote
2answers
1k views

Import and Plot MS Excel file in ArcGIS (v9.3) ModelBuilder

I am trying to create a tool using ArcGIS ModelBuilder (v9.3) that will allow me to import an Excel file, and output it as a shapefile in a coordinate system of my choice - or, if choosing the CRS is ...
2
votes
5answers
4k views

Where to find qgsaffine in the menu?

I installed the plugin qgsaffine but cannot find the entry in the menu bar. Where do I find this. Can anyone here help me with this? best regards desputin
1
vote
0answers
161 views

identify the fraction of raster cells and listing all the cell values in every polygon

In Arcgis 10 I have a netcdf file that maps the fractions of cropland in the world from 1700 to 2007. I extracted the years that i needed as raster layer format (continous data from 0 to 1) and now, ...
9
votes
3answers
10k views

How to access QGIS Plugin Repositories from behind a proxy?

I have been trying to teach myself QGIS by using this forum and others to help. Most of my questions can be answered by downloading plugins that are available through 3rd party repositories but for ...
5
votes
2answers
4k views

Viewsheds and Observer Points in ArcGIS Spatial analyst

I am trying to understand the viewshed and observer points tool in spatial analyst. I want to show which areas of land can see a wind turbine, or put another way, from where can the wind turbine be ...
1
vote
1answer
1k views

Calculate the distance between two contours

I have two contour polylines (single shapefile) and I would like to calculate the mean, min and max distances between the two lines. Is there a function in ArcMap 10 (ArcInfo license, incl. Spatial ...
3
votes
1answer
237 views

How to unload() a plugin in QGIS 1.7?

I am writing a python plugin for QGIS 1.7 (started it on QGIS 1.6 but switched to 1.7 recently). Since I switched to 1.7 my unload function doesn't seem to be working anymore. Whenever I implemented ...
3
votes
0answers
337 views

How to get distinct values from multiple columns in GeoTools?

Is there a way to get distinct values from multiple columns in geotools? I know I can get unique values from a column like this: SimpleFeatureSource featureSource = dataStore.getFeatureSource(layer);...
4
votes
2answers
9k views

Which hardware configuration is necessary for QGIS?

What kind of hardware is necessary to run QGIS on Win XP? Closely related: Specifications for GIS desktop hardware
10
votes
2answers
2k views

Shapefile to SVG with ArcMap (while retaining country attributes)

Does anybody know how to export the Natural Earth 1:110m shapefile to SVG with ArcMap while retaining the country attributes? From SVG I'm gonna try to convert it again over to RaphaelJS to achieve ...
3
votes
4answers
676 views

Floating point: understanding their inaccuracy [closed]

I am trying to understand why a floating point is inaccurate. Please bear in mind that I am not a mathematician. What is exactly the difference between floating point and double integers? and why use ...
4
votes
3answers
853 views

Remote sensing: How to define landuse from remote sensing data?

I am trying to research ways into obtaining landuse data for a project which calculates the visual impacts of wind parks. I have a DEM and DOPs for a relatively large region (5000km²), but I have no ...
1
vote
2answers
633 views

Re-initializing OpenLayers Map with different projection

Is it possible to re-initialize OpenLayers Map with a different projection ? Scenario: OL Map with projection 4326 is created, along with click, measurement, drawing handlers. A button to switch to ...
3
votes
2answers
937 views

Python Widget Wrapper to extend basewidget class in ArcGIS Viewer for Flex?

I'd like to create a flex wrapper for python code run locally (utilizing arcgis data and outputting data that can be displayed on the flexviewer). I'd like to use gdal or pyproj modules to process ...
1
vote
1answer
326 views

need to show multiple symbols for one point

I am working on a state map of parks with campsites. I want to show symbols for handicap access, tent camping, backpack camping, winter camping, rv camping. I have used a symbol for handicap but it ...
3
votes
1answer
311 views

Using landmarks in routing directions for ArcGIS Network Analyst?

I was wondering if there is a way to use a set of landmarks (in a point class or something) that will be included in the directions output for a Network Analyst route. So if there is a point (or ...
7
votes
2answers
1k views

Calling ArcGIS 10 geoprocessing method in FME 2011

I am trying to create an attribute index in a feature class in FME 2011. I couldn't find any trasnformer that does it. So I'm thinking may be I can use "PythonCaller" transformer to call "Add ...
4
votes
1answer
381 views

Multishading: bring them together to one Raster-Image

I made a multi-hillshade with 4 different light-directions and colors and stacked one above the other, each with its own transparency. Now I want to "save" the result in one raster-image. Whats the ...
6
votes
3answers
4k views

Topology or out of memory errors with large dataset intersects and spatial joins in ArcGIS

I receive a topology error notification when intersecting a point dataset (with ~5 million points), with a polygon dataset created by buffering those points by a half mile. The goal is to create a ...
2
votes
2answers
732 views

LonLat Points to Grid of Polygons in PostGIS

I'm going to preface this with it's my first time using PostGIS. I'm starting out with a 5 km x 5 km grid cell in which I know the center point lon/lat (SRID=4326). I'm trying to create a polygon for ...
2
votes
2answers
2k views

How to automate relative filepath when adding a new toolbox to the arcmap catalog?

So I'm creating an arcpy script for a custom toolbox and I want to make it so that a user can essentially utilize the script in that toolbox without having to change the source path (which I made ...
6
votes
2answers
2k views

How to check if domain already exists?

I am trying to check the existence of domains in my file geodatabase which contains 4 domains (automatically populated after I created some annotation feature classes). My code is as follows: import ...

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