7
votes
1answer
210 views

Which spatial weighting function does ArcGIS' GWR use?

I am running Geographically Weighted Regression and originally was using ArcGIS to carry out the analysis until I read/heard mixed reviews about it. I have now tried a different programme to run it ...
4
votes
2answers
967 views

Programmatical Setting of 'Store Relative Pathways' for multiple MXDs ArcGIS 10.1

I am looking to move large number of mxds to a different location on the same drive. Many mxds haven't got 'Store relative pathways' option checked therefore this operation will result in broken links ...
5
votes
1answer
669 views

Solving a route in a multimodal network dataset does not use all forms of transport available

After having completed Exercise 2 in the official Esri Network Analyst Tutorial, I decided to find a route in the multimodal dataset, to see how it functions. After adding several network locations ...
6
votes
2answers
791 views

Where to find shapefile basemap for the Indian Ocean?

I need to plot point data over a basemap of the Indian Ocean. Can anyone tell me where I can find such a basemap in shapefile format?
0
votes
1answer
1k views

delete feature from database by selecting feature from vector layer [closed]

I want to delete a feature attribute for example say grid completely from the map that is it has to be deleted from database. I am using OpenLayers 2.12, postgis 2.0 and postgresql 9.0. Please guide ...
2
votes
1answer
353 views

Where to find ready to use automate shadow detection algorithm?

I am searching for an algorithm to make a shape file of every shadow in Landsat image (30 meters per pixel). I need to classify lakes at the image, but territory is very mountainous and shadows are ...
8
votes
2answers
1k views

How to keep spatial reference using arcpy.RasterToNumPyArray?

I am using ArcGIS 10.1, and want to create a new raster based on two preexisting rasters. The RasterToNumPyArray has a good example which I want to adapt. import arcpy import numpy myArray = ...
13
votes
3answers
5k views

Writing numpy array to raster file

I'm new to GIS, and I'm lost with something I feel ought to be relatively simple. I have some code that converts infrared images of Mars into thermal inertia maps, which are then stored as 2D numpy ...
4
votes
1answer
3k views

Overlaying WMS from Mapserver in OpenLayers with epsg:900913 from Google/Bing/OpenStreetMap

ADDED: Another curious effect is that no matter to what scale I zoom on the baselayer google/bing map, the WMS overlay is always the same-sized shot of MN. That is, as the baselayer map is scaled up ...
3
votes
1answer
854 views

Using Google Earth to query database

I've been reading about using Google Earth to query data (this article) and I'm interested in learning how to make one of these. I just have a couple of questions: 1. Is this possible with the free ...
4
votes
1answer
1k views

Getting a constant background color for transparency

I am creating a series of tif files at 1:10k scale over a vast area (760 tiles) using arcpy.mapping.ExportToTIFF and then stitch them together to create a single ecw. The output looks ok but when I ...
1
vote
1answer
415 views

Does arcpy have an issue with directory names starting with a number?

I have a script to export DDP extents to tif and when I change arcpy.mapping.ExportToTIFF(mxd,"tests\BA\BA10k_" + str(ddp.pageRow.PageName) + ".tif",df,9306,9306*ar,1800,True) to ...
0
votes
1answer
290 views

Does a polygon in a layer intersect with another polygon in the same layer [closed]

I am a CS major with little experience in GIS. I am working on vector polygon overlay. Looking at GML and shapefile data, I realized that a map is made up of a large number of polygons. Does a polygon ...
8
votes
2answers
15k views

How to crop Shapefiles in QGIS?

I need to clip a large and very detailed .shp file in QGIS showing environmental data similar to a temperature map. Is there something like the very simple crop tool alike in photoshop where you can ...
1
vote
1answer
476 views

Is it possible to have self intersecting polygons in GML or shapefile?

GIS vector data for example GML or shapefile contains polygonal data. Lets assume, we have polygon A which has self-intersection which means that the edges in this polygon intersect with each other. ...
1
vote
1answer
2k views

Unable to removeLayers from Map

I was trying to create a FeatureLayer from the features returned from the ViewShed GP and I was successful at doing it. So when I click on the map, that featureSet is sent to the GP Tool and the ...
3
votes
2answers
2k views

German coordinate system from Lat/Long

I have WGS latitude and longitude for data points near Munich and I'd like to use a grid-type coordinate system, like the Ordnance Survey grids in Ireland or the UK. What coordinate system do you ...
4
votes
1answer
522 views

Why are the polygons in my GML not rendered?

I tried to view GML files from download services ( http://services.cuzk.cz/gml/inspire/cp/epsg-5514/ ) and I have a problem with viewing of polygons from layer "CP:CadastralParcel". This Layer ...
6
votes
2answers
809 views

WFS Layer - capabilities document contained no layers

I use Quantum GIS 1.8.0 on Windows 7 Professional, 64 bit. I have problem with WFS Layer. I tried tree WFS: 1) Download services - Parcels (Czech Republic) ...
1
vote
1answer
498 views

Retrieving XY from point graphics set in WPF network (arcgis 10.0)

I have a WPF application using ArcGIS 10. In the application I can set two point by clicking on map and calculate route between them. every time I click on the map, The application creates a ...
3
votes
2answers
1k views

raster2pgsql part of PostGIS?

Hi GIS Stackoverflow people, I wanted to use the PostGIS functionality raster2pgsql, but I had to discover that the Python function was not installed with my PostGIS installation. Do you know if ...
5
votes
2answers
822 views

What is the cause of 'tearing' of polygons (artifacts) using R, ggplot and geom_polygon?

Thanks to the answer given in this question I have been able to subset and draw a map of electoral divisions in part of the UK, in this case Pembrokeshire. The resulting data frame is large and ...
5
votes
3answers
167 views

How to make same installation on multiple machines?

What is the easy way to make the "same" Qgis installation (same menu, same plugins, same prefs...) on multi-PCs, 10 or 12 laptops ? thanks for your help.
2
votes
1answer
342 views

What coordinate system is this?

I just found a dataset of trees in San Francisco, but I'm unable to determine the system used for the coordinates. Here are some samples: 5998894.045593,2119007.035323 ...
1
vote
1answer
1k views

How to merge different classes/clusters in one single raster in arcgis 9.3?

I've created a signature file with 8 clusters and performed an unsupervised classification. Later I have grouped values (spatial) classes together to form 4 classes I needed (in symbology) but that ...
0
votes
1answer
85 views

Question about licence

I would like to ask about the licence. This software is presented as "Open Source Geographic Information System". But it is free also for company? Can I use it for creation of commercial maps in my ...
3
votes
1answer
71 views

Visualisation using simple plotting routines or advanced GIS packages?

When I have geographic data to be displayed, I usually use a plotting library to visualise the data, for example, combining matplotlib and basemap, or using the Matlab Mapping toolbox. For example, I ...
1
vote
1answer
126 views

Extending ArcGIS

I've been tasked with a thesis project where i have to extend the features of ArcGis. I've been asked to create a model written in Python that can run out of ArcGIS 10. This model will have a simple ...
2
votes
1answer
524 views

Advice on which version of AutoCAD to purchase

I am starting a consulting agengy and I need to determine what my best interests are regarding the purchase of AutoCAD software. I have great faith in the more reputable users on this site, and I'm ...
9
votes
4answers
6k views

Tutorial on how to model flooding using data from gauging stations along rivers in QGIS?

Can someone please direct me to a tutorial where I can learn more about how to model flooding using data from gauging stations along rivers using QGIS?
-1
votes
1answer
691 views

How to display coordinates under cursor in web map?

I'd like to be able to display the X/Y coordinates of the user's current mouse cursor location such as with this web map. I'm using the .NET Web ADF, C# and ArcGIS Server. Can anyone suggest any ...
8
votes
1answer
2k views

How can I use fortify() to create a filtered R data frame from a shape file?

I am in the process of building a ggplot choropleth map of population in administrative areas in Wales. I have downloaded the Boundary-Line data from the Ordnance Survey and extracted what seems to be ...
4
votes
2answers
374 views

How to pass an output stored in a single variable into another script using arcpy

I am running set of processes each with different outputs in a python script. Is there a way to set a variable as global so that just the output of that single step can be accessed from other scripts? ...
3
votes
3answers
293 views

GIS mapping software for visualizing and publishing maps [closed]

Currently I am writing my Bachelor thesis and for testing purposes I need software where I can visualize and publish maps and put vector data (point, line, polygon) on them. Can anybody recommend such ...
2
votes
1answer
278 views

Visualizing KMZ network link in QGIS

Is it possible to open and visualize and kmz network link in QGIS. If so what are the setps involved? Thanks in advance Cheers
2
votes
1answer
1k views

applying SLD to WMS raster in OpenLayers

I am attempting to adjust the symbology of a loaded WMS raster layer (img file through MapServer). It is the NLCD dataset. The WMS layer loads find with nlcd = new OpenLayers.Layer.WMS( 'nlcd', ...
2
votes
0answers
90 views

Recommendations on universal projection API or algorithm for ArcObjects?

As asked on the esri forum here, we are trying to convert a geometry from any spatial reference to any other spatial reference. We have tried the default IGeometry.Project(target_spatial_reference) ...
11
votes
2answers
1k views

polishing qgis map for publication using inkscape

I have a problem modifying the map I created in QGIS. I need to add some text on the map and axis labels. Apparently, labels cannot be rotated in qgis, so this I need to do in inkscape or in a related ...
2
votes
1answer
247 views

How to join attributes of donut polygon to hole polygon in ArcGIS?

First of all I'm completely new to the realm of GIS and ArcGIS. Basically I need a reliable way to determine a donut hole's containing donut for a few hundred thousand polygons (where the donut holes ...
2
votes
1answer
984 views

How can I append field from a geodatabase table to a polygon feature class?

I have an existing polygon feature class with about 30 attribute fields. I would like to append another 20 fields from an existing table in the same file geodatabase. Can this be done using an ...
5
votes
1answer
871 views

Can I disable mouse wheel zoom in QGIS?

I am having problems with the zoom in QGIS 1.8.0 where a slight move of the scroll wheel on the mouse zooms way way out. It will re-render at each zoom level and with large datasets it takes over the ...
0
votes
0answers
113 views

Silverlight chart binded to a related table service

I am new to programming - I am using Silverlight 4.0 with ESRI API 2.4. I would like to do the following: Create a chart on a popup/maptip/infowindow when the user click on the feature in the web ...
1
vote
0answers
63 views

“Flight recorder” for automobiles/motorcycles? [closed]

As I sat in traffic court last week for a non-moving violation, many of the cases were clearly he said/she said issues.. particularly with stop sign violations. I can easily see how this specific ...
3
votes
0answers
269 views

How to debug Quantum GIS PlugIn Visual Studio DLL?

I develop a Quantum GIS plugin layer using Microsoft Visual studio and placed it in my plugins folder of my customized quantum gis application. I now intend to debug the DLL using Microsoft Studio. ...
3
votes
0answers
343 views

Create annotation features programatically

I am using the ESRI Silverlight API for my application. For points, polylines and polygons the Editor class combined with feature layers works great. But it looks like I have encountered a problem. My ...
4
votes
0answers
258 views

How to apply ArcGIS time slider on Multiple Data Frames at once?

Is there a way to use the Time Slider on multiple data frames simultaneously? Example: My Dataframe 1 shows precipitation values over an area and DataFrame 2 shows corresponding temperature.. I want ...
8
votes
3answers
2k views

How to fix “Unable to initialize ODBC connection to DSN for ALC_AV_CO”?

So I am new to the QGIS community, and I have been trying to bring in some rather large access databases with little to no success. I have windows 7, so I've gone in through administrative tools/Data ...
1
vote
0answers
32 views

Styling a raster on relief shading analysis [duplicate]

Possible Duplicate: How to create a style file for QGIS from a plain text file? I have a text file which contains the following data eleva R G B 0 153 255 153 100 179 255 ...
4
votes
1answer
157 views

Is it possible to have a single foreign key column referenced to two or more different tables?

In Spatialite (3.0.1), having a normal (non-spatial) table, I would like to relate it to two different spatial tables, with different geometries types (multipolygons and polylines), using the same ...
2
votes
1answer
87 views

Center-to-Center distance [duplicate]

Possible Duplicate: What is the right solution (and map projection) to compute distances between points located all over the World? I want to know how I could calculate the center-to-center ...

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