1
vote
0answers
5 views

Create “mean” line from multiple lines using QGIS

I have multiple lines features (also have them in multipoints...) representing similar path (mountain trails, in this case) with various GPS precision, resulting in many lines close to each other, but ...
1
vote
1answer
19 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?
4
votes
2answers
828 views

Can't export a polygon shapefile to MySQL using ogr2ogr?

I am having problems with ogr2ogr and keep getting different versions of the error: ERROR 1: MySQL error message: The used table type doesn't support SPATIAL indexes. Description: ALTER TABLE ...
0
votes
2answers
26 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 ...
0
votes
1answer
155 views

Creating a layer in arcmap by dragging a table from an OracleDB

I am working on a project for a client, they gave us some data from their oracleDB, and when I connect to it in arc map I can just drag and drop the tables from the catalog window into arcmap and they ...
1
vote
2answers
84 views

Apparently MOBAC is not generating MBTiles correctly

I am trying to generate MBTiles with MOBAC, to be used in an offline map Android application (trying to use OSMDroid). Now I generate the atlas, but something goes wrong because I get the error ...
-1
votes
0answers
20 views

Algorithms + additional information

I would like to know where i could find information or some instructions for algorithms using for spatial analysis. For example algorithms to calculate routes between cities or to optimize the way a ...
2
votes
1answer
120 views

Memory Vector Layer Corrupted?

I was working with a large data set that had data for roads, rivers, railways, etc. all together so I decided to break the different data out so I could label it differently on the map and check each ...
2
votes
1answer
14 views

XML ElementTree in ArcPy consuming WMTS XML

How do I work with the xml Element Tree to obtain the ScaleDenominator parent where ows:Identifier = default028mm? With a fair bit of swearing I have managed to hack my way into all of the WMTS ...
0
votes
1answer
15 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
1answer
19 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 ...
3
votes
1answer
25 views

Save map in raster format from QGIS using compression

Is there a method to save a map in raster format from QGIS using compression? For exemple from "Export map" in ArcGIS there are many options to compress the images depending on the file type (tiff, ...
0
votes
0answers
10 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
1answer
6 views

Building heights above DEM through field calculator

I have a series of building polygons which I would like to convert to a raster illustrating their height. I have the building heights but not their elevation above sea level datum. I have the ...
0
votes
0answers
10 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 ...
0
votes
1answer
7 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 ...
0
votes
1answer
95 views

Zoom variable or pixel distance

I have query by distance working in a framework that generates a list of features within a fixed distance of a clicked feature. I would like to make the queried distance variable based on either: ...
0
votes
1answer
10 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
0answers
16 views

pgRouting with TomTom multiNet

I would like to use TomTom multiNet data with pgRouting to create drive time/distance polygons. I have gone through the documentation regarding network topology creation, but am still confused to ...
-3
votes
0answers
13 views

Building network dataset for entire city

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?
2
votes
2answers
386 views

How to create temporal heat map in CartoDB?

I'd like to create an animated heat map, showing the changing temperatures at same locations through time. It looks like you would create this using a combination of either the choropleth or ...
3
votes
1answer
29 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
0answers
11 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
10 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
5 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 ...
-1
votes
0answers
48 views

What GIS solution is suitable for my project

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 ...
1
vote
1answer
9 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
0answers
5 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"> ...
1
vote
3answers
73 views

What is the smallest size a point can be represented on ArcMap 10.2?

I have a large number of points that I need to plot and want to avoid overlaying them wherever possible. Whenever I choose a figure <1 for their size, I don't see any difference, yet ArcMap seems ...
2
votes
1answer
145 views

Natural Earth: How to get the position of all provinces that belong to a state

This question is about Natural earth 1:10 states and provinces.shp file. I'm using ogr2ogr and want to know the name of the id i need to pass . In purpose of pulling out the right states regions. ...
0
votes
1answer
11 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

Solve for alternate routes without barriers or additional stops in ArcGIS Network Analyst?

I created a network dataset using ArcGIS Network Analyst. I have one start and one destination point. I want to find the three shortest paths from start to my destination (find three shortest paths ...
1
vote
1answer
13 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
1answer
20 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
6 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 ...
1
vote
0answers
29 views

Calculate geographic position based on azimuth, distance and height [duplicate]

How to calculate the geographic position of an object in sky (Point B)(like an aircraft) from Home Point (Point A) based on only four variables: Lattitude and Longitude at Home Point, Azimuth at ...
3
votes
1answer
134 views

Openlayers popup not closing

This is a special case, I have many popups attached to objects and they work fine and I am having a problem in only one case. All layers and popups are handled by select control's onFeatureSelect, ...
0
votes
0answers
5 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 ...
2
votes
1answer
37 views

Why are my polygons automatically simplified/generalised when merging them in ArcMap 10.2?

I am creating a small land use map, as an exercise for visual image interpretation. I created a shapefile and started digitising polyogons with the polygon tool. The problem is that some of my ...
0
votes
0answers
8 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 ...
7
votes
1answer
444 views

How to store historical versions of road (route) portions?

Part of my job is to analyze certain portions of road for our clients. A client will ask, I want to look at Road A from parcel XYZ to parcel RST and Road B from parcel RST to parcel OPQ. The way I do ...
3
votes
2answers
122 views

Accessing geometry with SearchCursor in ArcPy

I'm trying to write a script that clips all feature classes in fcList by the successive rows of a clip feature. I'm using arcpy with ArcGIS 10.0 The problem is that I need to verify whether 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
0answers
7 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 ...
1
vote
1answer
14 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 ...
2
votes
0answers
11 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. ...
0
votes
0answers
5 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
6 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 ...
1
vote
1answer
14 views

Connecting FME Server to Active Directory - Failed to create credential

I'm trying to use FME Server's Active Directory integration to authenticate users. The connection works but fails soon after (and single sign on fails). The account has permission to log on as a ...
0
votes
2answers
2k views

How to Calculate fields for attribute table using Model Builder

I am working with the Model Builder tool in ArcMap. I have created a simple model that takes the Strip Map Index Features as an input. I have added fields to the model to produce more fields in the ...

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