3
votes
1answer
71 views

“Singleparts to multipart” vs. “Dissolve”

It seems to me that the vector tools "Singleparts to multipart" and "Dissolve" do the same things. Can someone confirm this, please? Or do I overlook something?
0
votes
1answer
12 views

Creating a spatial reference in arcpy from projection name

I am using ArcGIS 10.2.2, Python 2.7. I want to create a spatial reference from the name of a projection, e.g. NAD_1983_BC_Environment_Albers, using the arcpy tool ...
2
votes
0answers
24 views

How to connect centroids of lines sharing the same intersection in QGIS?

I'm looking for a big help to accomplish the following task: I have this street network of the center of Turin (IT), composed by lines representing streets, and black points representing ...
0
votes
0answers
14 views

Concise guide to actually display a map in a web server

I'been looking for countless hours for a guide or step by step procedure to actually end up with a web browser showing a MAP. I'm using windows 7 and have OSGeo4w running along with apache, that ...
1
vote
1answer
10 views

How to define layer style for KML layer within OGR Virtual Format?

I have the following OGR virtual format data source, which includes a few GeoJSON files and one KML file: <OGRVRTDataSource> <OGRVRTUnionLayer name="union"> ...
0
votes
0answers
13 views

Configuration problems with GeoServer 2.6 under Ubuntu

I installed GeoServer on Ubuntu Linux 14.04 using the OS-independent binary that comes with Jetty. I am running it using the bin/startup.sh file. I am trying to create an ImageMosaic. When I try, I ...
0
votes
1answer
9 views

How to show a map with queries from a map file connected to postgres in browser using javascript?

So, the problem is how to show a map in browser using javascript? I have a map file with 2 layers in it: "peta" is a shp data from postgis and "korban" is a numeric data from postgresql. And then I ...
2
votes
1answer
20 views

How to convert a RGB tiff into pseudocolor with GDAL etc?

In QGIS I have made a singleband pseudocolor image out of one of the bands from a RGB GeoTiff. I choose one band and then make a linear color interpolation (see attached image). I now want to do ...
1
vote
2answers
17 views

Address Fields in Canadian Municipal Data Model

I'm looking at the Postal address table in Esri's Canadian Municipal Data Model. There are some fields in there I don't understand, and wondered if anyone could help me out. The fields are: ...
0
votes
0answers
11 views

ArcGIS Online : 'Unable to import this shapefile (a is undefined)'

After saving a shp file from QGIS I get this error adding the shp to ArcGIS Online: 'Unable to import this shapefile (a is undefined)' I tried saving in different projections (WGS1984 (EPSG:4326), ...
0
votes
0answers
11 views

Has anyone success using subset an image such as NAIP?

Has anyone any luck subsetting a small part out from NAIP? I'd like to hear your feedback on pros or cons on how to subset an image from NAIP despite they are in mrsid and their uncompressed file size ...
0
votes
0answers
9 views

CartoDB Infowindow disabled

I'm new to CartoDB, and I'm building a table from Google Form responses as demo'd in this tutorial: http://blog.cartodb.com/make-maps-from-data-you-collect-in-google-forms/. It's all working perfectly ...
1
vote
1answer
31 views

Adding items to DEM in QGIS

Working with QGIS and Grass I would like to produce a ZTV. I have the bare land DEM happily ready to go but would like to add buildings and woodland to the calculation. Can anyone please point me in ...
0
votes
0answers
11 views

Geoserver 2.5.2 - How do I enable the GeoJSON bbox property?

Just started using Geoserver 2.5.2. On my old server which was Geoserver 2.1 when you ran a WFS request to return GeoJSON (or, for a quick example, clicked Layer Preview -> All Formats -> GeoJSON) the ...
1
vote
0answers
5 views

Multi-Lingual Places API

I'm developing a website and I'm looking for a places api (that isn't google!) one which can take a place parameter in any (or most) languages and return me values both in the language I've sent the ...
2
votes
1answer
20 views

How to set the extent of a rotated data frame from a rotated rectangle using ArcObjects?

I use ArcObjects to produce a map document. I have a rotated rectangle that I want to be the exact extent of my data frame. So, I want to rotate the data frame with the same orientation than the ...
0
votes
0answers
8 views

Problem with Leaflet Boundary Canvas plugin

I'm trying to identify the source of a problem that I'm having, I cannot show a tile layer(created with gdal2tiles) inside a polygon generated in Leaflet, using the plug-in ...
0
votes
0answers
13 views

Trouble installing v.class.mlpy add-on extension in Grass GIS

Background: I am trying to do OBIA analysis using the windows based Grass GUI. Not familiar with python coding process, environment. Problem: I've been trying to run the add-on extension but failed ...
0
votes
1answer
7 views

ENVI 5.1 how to load two image?

I am using ENVI 5.1 and when I use the Data manager to load several image and if I want to load two adjacent image why would one load and other doesn't load. Am I missing something here ?
0
votes
0answers
9 views

Difference postgis TopologyException

I'm trying to make a quite simple analysis in Postgis, but I'm finding some problems. I want to in the first place create buffers for then, intersects themselves but one, this will be differenced. ...
2
votes
1answer
21 views

Offline geocoding and reverse geocoding for android

I'm developing an android application that cannot use internet and need to deal with maps and positioning. Download OpenStreetMaps data seens to be a good solution to access map information offline. ...
1
vote
1answer
16 views

Geoserver 2.5.2 upgrade - now GeoJSON and GML WFS not working

I've recently migrated Geoserver from a Geoserver 2.1 to a clean install of Geoserver 2.5 and copied across my data files. However, I'm not finding that clicking Layer Preview, going to the All ...
1
vote
1answer
16 views

wms with time dimension

I set up a layer with "time" dimension in Geoserver, but I'm having quite a hard time figuring out how to use it... It is a vector layer with some polygons in it. This is my layer configuration for ...
1
vote
1answer
16 views

Change point symbol in mapbox.js/leaflet/esri-leaflet.js

I am a complete nooby to the above libraries. Till now, everything shows up very fine. I got my mapbox as a basemap and added some point data provided by an ArcGIS Server. To get the AGS data onto ...
0
votes
1answer
23 views

How to get image pop ups in QGIS?

I have a map of an area and georeferenced photos. I need to be able to bring the pictures as points and then be able to click at a certain point and an image pop up.
1
vote
0answers
6 views

QGIS Raster moving when Majority filter

I'm running QGIS 2.01 Dufour on Linux Mint. Data & project are WGS84. I'm trying to smooth a grid & following other posts here I've used the Majority filter. This is looking helpful, but the ...
0
votes
1answer
15 views

Generate delaunay triangulation from 3D(x,y,z) points

I have 3D Points array.each 3D point have x,y,z data. I want to generate delaunay triangulation.I am new in delaunay triangulation. My array as below. -256.24 85.35 5.0 -262.24 84.35 15.0 -263.24 ...
3
votes
1answer
35 views

Unknown Spatial Reference after Georeferencing in ArcMap

I am trying to georeference an image base on another *.tif, after rectifying i still have my Image as unknown spatial reference. Does somebody know how I can fix it?
1
vote
1answer
87 views

How to create NDVI map From LiDAR intensity and RGB image

I am new with GIS and I've been looking for ways on how I could create a NDVI map from LiDAR intensity and RGB image. Is there any way I could do this? I have read that you could create an intensity ...
-3
votes
0answers
14 views

Building network dataset for entire city [on hold]

I'm building a network dataset for the city of Oslo based on a shapefile. It's been 'Building the network dataset...' for well over an hour now. How long is this gonna take?
0
votes
0answers
7 views

Geonetwork harvesting metadata

I'm using Geonetwork version 2.10.3 to harvest OGC WMS service metadata but it gives me this message when i hit save button Unable to add a new entry Error : error Message : String index out of ...
1
vote
0answers
20 views

In qgis using python, how can I get multiple pixels from a raster based on a vector point file

I just started working with qgis, and for the life of me I cannot figure out how to solve this problem: I have several points of interest, these are stored in a shape file (just simple points). I ...
1
vote
1answer
33 views

SVG from QGIS to Illustrator CC gets wrong stroke widths

When I export SVG files from QGIS using the Print composer the stroke widths become a lot wider when importing into Adobe Illustrator. It seems like the stroke width in the SVG translates differently ...
0
votes
0answers
6 views

saga:slopeaspect curvature

I'm using windows 7 on 64 bit and using Qgis 2.6.0.I'm trying to process some Tifs from the console using the processing toolbox and saga:slopeaspectcurvature. This is pretty much how my code looks ...
0
votes
1answer
85 views

What should be my learning progress regarding GIS open source

I was wondering for a while now, what should be the hierarchy of my GIS knowledge or better to say, learning curve in domain of open source GIS. Should I start with Geoserver and PostGIS then ...
1
vote
2answers
41 views

How to merge shapefiles with the same attributes?

Let's say, I have two shapefiles, a.shp and b.shp, containing point features with the follwing attribute tables: a - id att1 att2 ----------------- 1 1 1 2 2 2 b - id att1 ...
1
vote
0answers
7 views

Geoserver web admin page language

As far as I know Geoserver web administration page language depends on the language settings in browser. So if my preferred language is Russian I see partially translated page, and if I need it in ...
2
votes
0answers
23 views

“Georeferencing” lidar data to accurate survey

Often I obtain LIDAR data for concept studies and conventional survey (in dxf format) over a small portion of this. The LIDAR typically covers the broader area and is used for broader studies, ...
-1
votes
0answers
51 views

What GIS solution is suitable for my project [on hold]

I have been tasked to look into what the solution would look like for the following requirement; We need to run a query passing in a UK postcode or full address to find out if we have an existing ...
0
votes
1answer
11 views

Where is the Speed Unit option in Update Traffic Data tool of ArcGIS Network Analyst?

I can't find the Speed Unit option in the Update Traffic Data tool for ArcGIS 10.2.0 (Enterprise). In the help Esri describes that you can specify a Speed Unit but I don't see the parameter.
2
votes
1answer
48 views

Join line to multiple points

I took some ASCII files and created points with attributes. I am trying to join the line features to these but a simple join function will only take the one that is closest. Is there a way to perhaps ...
0
votes
1answer
15 views

How to populate new field according to string content of another field using VB script?

I want to populate a new field called Letting according to the string value found in another field. If 'ASP' or 'Q' is in field ExternalRE then I want 1 in Letting, everything else to be 0. Here is ...
0
votes
0answers
16 views

Closest line, line intersects box and general help

I've been knee deep in information about Geo data, projection and topography but can't find a simple library/method to help me with basic calculations of coordinates. I'm using Google Maps API in ...
-1
votes
1answer
18 views

Geonetwork installation

I have installed GeoNetwork using the windows installer, but when i try to open, it displays the error message below: Raised exception while initializing resource main-db in C:\Program Files ...
0
votes
1answer
8 views

Openlayers 2 How to know the map is after panning/zooming

Firstly i found a logic to customize or extends Openlayers 2 Control Navigation. I dont want to custom the openlayers default, because I'm currently using 2 different map in one page. especially to ...
0
votes
0answers
13 views

How many Print Composers in a project before its too slow

We are using Print Composer in QGIS 2.6 to print map insets at specific locations, these have all been created and saved in the project. The project now takes a long time to just open, has anyone ...
2
votes
1answer
21 views

Unsupervised classification with kmeans in R

I have a time series of satellite images (5 bands) and want to classify them by kmeans in R. My script is working fine (loop through my images, convert the images to data.frame, cluster them, and ...
0
votes
0answers
9 views

Description of parameters of GDAL SetGeoTransform

Can anyone help me with parameters for SetGeoTransform? I'm creating raster layers with GDAL, but I can't find description of 3rd and 5th parameter for SetGeoTransform. It should be definition of x ...
0
votes
0answers
10 views

Query for finding nearest distance and driving time from objects in a different tables

I have 4 postGIS tables: employees_wgs Facilites and (created by osm2po): at_2po_4pgr at_2po_4pgr_vertices_pgr What I want to do is: make a query to populate two columns in "employees_wgs" ...
1
vote
0answers
11 views

Semi-transparent picture symbols in ArcObjects

When creating a new point layer with picture symbols in ArcMap 10.2.1 using ArcObjects, I have tried several ways to load semi-transparent symbol images from .png files, but to no avail, the ...

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