2
votes
1answer
339 views

How to fix distortions for Baden-Württemberg?

I'm working in an area in Baden-Württemberg, Germany. I loaded some OSM data in QGIS but the map display is distorted. I tried ftools define projection with many different projections but nothing ...
5
votes
3answers
2k views

bing Basemap Missing

3/26/2014 - Since writing this question, a patch has been released. It can be found here: http://support.esri.com/en/downloads/patches-servicepacks/view/productid/160/metaid/2003 The bing ...
0
votes
0answers
99 views

Mapinfo lat Long calculate

I have mapinfo table containing Columns: Lat Long 21.2563 40.1256 21.2565 40.1278 21.2567 40.1288 21.2569 40.1291 21.2571 40.1352 21.2578 40.1380 Now i want to calculate the whole distance ...
8
votes
4answers
6k views

How does WiFiSLAM work?

Apple recently acquired WifiSlam. How does their technology work? Their website doesn't go into much detail. Allow your smartphone to pinpoint its location (and the location of your friends) ...
1
vote
0answers
32 views

How to load more than the standard tools to the grass toolbox?

I need to know how I get all the grass tools into the grass toolbox of QGIS. Is there an easy way to do this? I tried the sextante toolbox. After an update sextante doesnt work (python errors). For ...
0
votes
1answer
363 views

How do I style lines to show gradient colors for two attributes?

I have a layer with the city streets. I have a database with traffic values, including traffic going into the city and traffic going out from the city. I need to show the street links with different ...
2
votes
1answer
417 views

Problem importing LiDAR data in GRASS 7

I compiled GRASS 7 on Ubuntu 12.10, with liblas in order to run r.in.lidar and v.in.lidar. I now want to import .las data; the option in file -> import raster data -> LAS LIDAR points import is given ...
0
votes
0answers
218 views

Help in GRASS/QGIS/Python

I have Idea about ArcGIS, and a bit of QGIS and zero programming knowledge, which I am trying for thesedays. I saw GRASS GIS and have started working with shapefiles, which are not being loaded... :( ...
2
votes
1answer
1k views

Using GeoWebCache to cache google maps tiles

I'm new to GIS and I would like to know if anybody could give me a quick example of using geowebcache with google maps tiles. Thanks.
2
votes
2answers
842 views

Create CMS system using Cartaro

The main objective for our project is to create a portal website in Drupal. On this website, people must be able to upload their geographical datasets (mostly shape files, but also xml files that ...
0
votes
1answer
589 views

Mapinfo workspace won't open

When I try to open my workspace file, renamed 'FILE' here, it gives this error: (FILE.wor:201) Found [)] while searching for [A string constant]. (FILE.wor:204) set is an invalid indentifier. (FILE....
1
vote
1answer
960 views

Overlapping lines representation

Cartography question. I do have administrative boundries for counties in polygon FC. What tool do I use to prioritise display of features. In example, when lines overlap- I want to show only 1 dashed ...
2
votes
2answers
1k views

How to draw line in leaflet using postGIS road data

I have few points from server and I want to draw a line with this point on road. But the leaflet drawing point to point line as shown in picture in orange color. But I want to draw the line according ...
1
vote
0answers
445 views

Using custom contextMenu in Arcobjects(C# and ArcMap)

I added a new custom tree to TOC which looks like this: IObjectClass IFeature IFeature ... IObjectClass IRow ... made context menu using this sample http://help.arcgis.com/en/sdk/10.0/...
1
vote
1answer
148 views

Opening local *.accdb file through ArcGIS API for Flex button?

I have a web mapping application created with the ArcGIS Viewer for Flex application builder. Is there a way to create a button that will open a local accdb file? I dont want to connect to MS Access ...
0
votes
1answer
305 views

Can't load Mxd file in MapControl?

I used below codes to save IMap into byte[] (to store in my database), but I can't load it again, are there anyone know what's wrong ? public byte[] SaveMap(AxPageLayoutControl pageLayOut) { ...
1
vote
0answers
318 views

how to get all features from a layer in openlayers?

I deal with geoserver and openlayers, i use WMS layer for displaying due to loading time is shorter than vector layer. My problem i couldn't get all features of a layer without event, For sure i ...
3
votes
0answers
777 views

Leaflet: Linking a marker click event to an image

I'm breaking down my question into three parts. I am a beginner to Leaflet and to writing code. Currently, I have a JSON file with all of my markers linked to my map page. The idea is that every ...
1
vote
2answers
1k views

Fetch Google Map tile, without using Google Map API

Does anyone here know is there any other way to fetch Google map tile, without have to use Google Map API? Microsoft Bing Map does provide Rest API. wonder if possible to with Google Map, Cheer.
2
votes
1answer
152 views

How to represent two fields of the same states or district layer using different color borders and fills in QGIS?

If I had a set of data in QGIS that was gradually shading a state or district the exact way I wanted -- but I also need to portray more information about that state or district with additional colors, ...
4
votes
1answer
144 views

Selecting surrounding states from a given state

I have a PostGIS spatial enabled table with the states in the US. How can I write a query selecting all touching states to a named state. Like this : Select * from States Where geom touches (Select ...
1
vote
1answer
190 views

Check Personal Geodatabase attribute against external MySQL database?

I have a Personal Geodatabase to which editors enter values from some field inputs. I would like some of the entries, eg Project No ( whose name is unique and has some some related attributes like ...
0
votes
1answer
870 views

Problem inserting new features to file geodatabase feature class using ArcObjects 10 SDK

I'm trying to add new feature to file GDB feature class and keep getting this error: Objects in this class cannot be updated outside an edit session. Feature class has attachments enabled (exists ...
1
vote
0answers
356 views

View PostGIS geometry in QGIS [closed]

I am a newbie to GIS systems so please be patient. I have a PostGIS database set up with a spatial data table. One of the columns is of Geometry type and contains Points with SRID 4326. I want to ...
2
votes
1answer
902 views

Trilateration 3D - Vincenty's Formula

with reference to Trilateration using 3 latitude and longitude points, and 3 distances. The accepted answer was votes as shown in wikipedia at: http://en.wikipedia.org/wiki/Trilateration in ...
1
vote
1answer
34 views

Holding and using Romanised names with Diacritics

I have two True type font files (Permanent Committee on Geographical Names) PCGNA.TTF AND PCGNTN.TTF. The romanised diacritics are well read in MS excel. But when I convert this excel in shp or pgdb ...
2
votes
1answer
598 views

Write string to status bar that doesn't go away

I'm attempting to write the number of items matching a given query to the statusbar. when i debug through the code, i am able to step through and see the message hit the statusbar, but then it ...
4
votes
2answers
815 views

Calculate distance of point along a line using NetTopologySuite

I am looking to calculate the distance along a line of a point using NetTopologySuite. Indications are that the distanceOp may have something to do with it, given that I can a point on a line closest ...
-1
votes
2answers
246 views

styles when merging shapefiles in qgis

Trying to create something for mapstory.org It wants it in all one shapefile. So I create a polygons and lines (with time attributes) in qgis 1.8 Then merge them all into one shapefile, how can you ...
0
votes
1answer
57 views

Can you map with numbers and words in the same column?

I have a column in my .dbf file that is a mixture of gradually increasing numbers but also a word for all of the items that don't match the criteria, for example: **JUNIOR_PRI,N,4,2** 3.9 2.44 1.38 2....
1
vote
2answers
1k views

Reclassifying Rasters Error 001100 Failed because no statistics are available

I need to reclassify some vector data which was made from Euclidian distance from points and lines. So after getting the Euclidian distances, I tried to run reclassify, but got: Error 001100 Failed ...
0
votes
2answers
2k views

Mysterious Problems with .IGE file [closed]

I'm trying to manipulate an .IGE file, which I understand is a raster data format developed by Erdas Imagine. The data I've downloaded is the National Land Cover Database (NLCD) 2006 Percent Developed ...
3
votes
1answer
920 views

How to get a QGIS useable style file from OS .xml and .xsl files?

Ordnance survey provide some style files to support their vectormaplocal product. The style files appear to come in pairs, similarly named but one with a .xml extension and the other .xls The two ...
3
votes
2answers
3k views

How to set/save the extent of a map in QGIS?

I'm creating a bunch of maps with TimeManager in QGIS in order to create an animation. In order to overcome some of the limitations of TimeManager for dealing with raster files, I'm creating ...
3
votes
0answers
382 views

How to create raster attribute table to a raster data using gdal python?

I classified a remote sensing data and saved it as a raster using Gdal python. I want to create a raster attribute table for this classified result.. my classified raster has five classes with 1,2,3,4,...
1
vote
0answers
83 views

code for finding gaps between polygon parcels

i am trying to write code for finding gaps between polygons, the idea is to convert polygons to polylines and checking the attribute table, each selected segment that shows two records in the tables ...
1
vote
3answers
772 views

ArcCatalog 10.1 tree doesn't refresh after adding new custom IGxObject at runtime

I am using ArcObjects 10.1 (.NET) to customize ArcCatalog: adding new nodes in catalog tree like in the Esri's example. But when I add new child node to already expanded parent, it doesn't show up in ...
0
votes
1answer
109 views

Why can't I load more than 12 elevation files into NVIZ?

I have a large set of rasters in a GRASS mapset, which I would like to use as frames in an animation, visualizing the raster data as elevation. NVIZ is an obvious tool for this, but I'm having trouble ...
3
votes
2answers
304 views

How do I tell GRASS where to find Python?

For some reason, when I start GRASS on my Mac it says that it has found Python 2.6.7. However, /usr/bin/python version is 2.7.2 and I can't find a lower version anywhere on my system. Potentially ...
7
votes
3answers
687 views

Are there any simple models for wildfire hazard mapping with ArcGIS ModelBuilder?

I am interested in producing a simple fire hazard/severity map via ModelBuilder from commonly available datasets (e.g. DEM, NDVI, slope, aspect, land use/cover, etc). Are there any resources or ...
0
votes
4answers
418 views

Coordinates conversion doubt

In QGIS do I have a EPSG:4326 shapefile that shows the coordinates "-7148300 -3688500" and I need them in the format -64º -31º for further processing in a geodjango app. However using ogrinfo I get ...
5
votes
2answers
1k views

Python Script to convert a mass of KMLs to a single fGDB

I have a mass of KML files, approx 350+ that I need in a single fGDB. I lifted a string of code from ESRI help to attempt to do this - I got it working to the point of creating all the individual ...
10
votes
2answers
4k views

Casting ArcPy result as integer instead arcpy.GetCount_management()?

I am trying to get a number by counting how many points are in a shapefile. And this works (I think), except I then am running into trouble using that number somewhere else. Eventually, I'll be using ...
0
votes
1answer
114 views

Shrinking the co-ordinates into a unique number [closed]

I have a bunch of data's in my gpx files. I would like to shrink those bulk data's(co-ordinates) into a single ID or sort of something. any suggestions?
1
vote
2answers
864 views

How to convert OSM data to a projected Coordinate system

What is the easiest way to get OSM data into a shapefile projected data format for QGIS? Sounds simple but I've run into problems with this before.
0
votes
1answer
70 views

Is it possible to “strip” unwanted/excess data from a shapefile?

So I have a dataset that contains a unique identifier, and a .dbf file that I need to join to my shapefile. This is the only field that I can do a join on. The .dbf field is a 8-digit unique number, ...
3
votes
2answers
2k views

convert my large svg image into tiles

This is probably going to annoy the more experienced map people here, but I'm sort of new to all this, or at least I don't have a lot of experience. I know this is a bit strange and not ideal, but I ...
3
votes
2answers
151 views

Which census geography boundaries do congressional districts preserve?

Tried searching for this information elsewhere and couldn't find a clear answer in the TIGER documentation, so I thought I'd turn to you good folks. Obviously, congressional districts can cut across ...
1
vote
1answer
457 views

Data management in GRASS from command line?

I'm trying to import a large set of raster files into GRASS. The GUI import tool works fine for a handful of files, but it appears to require that I click the "Layer id" checkbox for each individual ...
3
votes
4answers
1k views

What Python package to use to calculate midpoint?

I asked a question earlier about how to calculate a midpoint. I was wondering if there is a Python library that does this alreay?

15 30 50 per page