1
vote
0answers
17 views

Geoserver Realm

I am trying a lot of days to create a GIS app with Geoext, openlayers and geoserver through Apache! Well I achieved that but I had created many users with different roles! When I am loading my app ...
0
votes
2answers
109 views

Reading file geodatabases without using ArcObjects or any other licenses

I am interested in writing C# class libraries that can read/modify file geodatabases. The issue I have with the File Geodatabase API from ESRI is that this is for commercial use, and I don't want to ...
11
votes
2answers
222 views

Open source alternative to ArcGIS geoprocessing service concept?

I am searching for any examples of implementing a logic that Esri has built with geoprocessing services. You author a custom tool or it can be a system tool >> you publish it exposing this ...
1
vote
1answer
12 views

Why does OpenLayers render these two AGSCache layers differently?

I am using OpenLayers to try to display aerial maps for two cities (McHenry, IL and Cupertino, CA). By following the tutorial for OpenLayers I have gotten my McHenry example to render correctly, as ...
1
vote
1answer
15 views

How to zoom to a specific point?

How is it possible to make the map zoom to a specific point like an address that the user wants to find? Codebehind: private void btnSearch_Click(object sender, RoutedEventArgs e){ var queryTask ...
10
votes
4answers
4k views

How to create equidistant points in QGIS?

I am trying to create points (new layer) at specific distance along the road (existing layer) in QGIS. This gives solution for ArcGIS. How to achieve this in QGIS? This one explains how to create ...
0
votes
1answer
388 views

openlayers search on feature

map = new OpenLayers.Map('map', options); var tiled = new OpenLayers.Layer.WMS( "Kaski", "http://192.168.1.236:8080/geoserver/Kaski/wms", ...
0
votes
1answer
26 views

Can I make a clickabe image map in geoserver?

I mean when a region of a map (for example, a country) is clicked to redirect me to another URL, not only to give me some information like fid,name, etc. You know when a region of a shapefile is ...
0
votes
2answers
42 views

MapInfo Tab Files - Which feature types are contained?

Without opening the TAB within a GIS package, is it possible to determine which feature class it contains? Could the TAB file be open in notepad and assessed for example?
2
votes
1answer
31 views

JTS “points must form a closed linestring”

I'm trying to create a polygon and calculate it's area using final GeometryFactory gf = new GeometryFactory(); final ArrayList<Coordinate> points = new ArrayList<Coordinate>(); ...
0
votes
0answers
19 views

insert row into postgis query table in QGIS

I find I am using QGIS (2.4) more and more as a client for PostGIS database tables with geometry, but also for tables without geometry, partly because it's good just to use the one application and ...
1
vote
0answers
15 views

How to create a svg item onto Map Canvas in QGIS API?

I'm working on a project with QGIS-2.4.0 API using C++. I need to load some svg files to the application for displaying as symbols. QGIS API has a class named QgsMapCanvasItem, which is an abstract ...
1
vote
0answers
25 views

Creating Form in QGIS

I want to create a form for editing attributes in QGIS. I have a lot of question and hope somebody can suggest how they work or where I can read about the next elements of form: Classification List ...
1
vote
1answer
85 views

Counting self intersections of linestring using PostGIS?

Is there a way of using PostgreSQL + PostGIS for finding the number of self intersections in a linestring? I have a linestring that goes forward but in circles, and I need to find the number of times ...
0
votes
0answers
16 views

Is there an editing function in qgis cloud? [on hold]

does someone know if an editing function exists in qgis cloud? or maybe is planned?
1
vote
1answer
32 views

Reprojected Shapefile does not align with Openlayers Plugin

I am based in NSW, Australia. I have a shapefile that when I underlay with the openlayer plugin (google satellite), the shapefile is skewed despite all my efforts to correct it. I changed the ...
1
vote
1answer
26 views

Why aren't Mapbox vector tiles rendered in the browser?

Would it be technically possible to have Mapbox's compact vector tile format sent to the client (instead of PNG tiles), then rendered inside the browser with JS code? Second question: when using ...
1
vote
0answers
39 views

Dark Object Subtraction QGIS

I'm trying to do Dark Object Subtraction (DOS) for a Spot2 and 4. I have calculated the TOA reflectance and now want to get the at surface reflectance. Using QGIS I would like to know how I can do ...
2
votes
1answer
28 views

How to store a password during one QGIS work session?

I'd like to get into qgis-plugin development, but am rather new to both python and QGIS development. I intend to write a plugin which connects data from a mysql database to shapefiles. As the data is ...
3
votes
1answer
79 views

Use identify tool on a specific coordinate

Just a simple question. I would like to use the identify tool for a specific coordinate to get the pixel value. Unfortunately its not possible to place the cursor that precisely. I used the got to xy ...
1
vote
0answers
9 views

Utility Network Analyst

I want to write C# code for utility network analyst (downstream trace task). My code is: IUtilityNetworkAnalysisExt m_utilNetExt = new UtilityNetworkAnalysisExtClass(); ITraceFlowSolverGEN tfs = ...
2
votes
1answer
20 views

Intersect shapefile with raster, then determine proportion of each raster value?

Using the arcpy module in Python, I want to find the proportion of each pixel value within the boundary of an overlaying polygon. (The polygon is in a shapefile.) For example, there are 10 possible ...
3
votes
2answers
35 views

QGIS doesn't create the correct projections when creating new shp files

I received shapefiles exported from ArcGIS with EPSG:2227 as the CRS, which should be: +proj=lcc +lat_1=38.43333333333333 +lat_2=37.06666666666667 +lat_0=36.5 +lon_0=-120.5 +x_0=2000000.0001016 ...
1
vote
0answers
16 views

Trying to display GeoServer layer controls but nothing is coming?

I am a beginner with GeoServer trying to display layer controls but nothing is coming. <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>GeoServer Layer</title> ...
1
vote
0answers
13 views

TIMESAT input image requirement?

I tried to work on TIMESAT but always facing a problem. Here is the method I have used. Seems correct, but I get a warning at the end. I have created a NDVI file from ENVI 4.8 >> Transform >> NDVI ...
2
votes
1answer
21 views

leaflet marker-cluster JSONP geoserver

I hope I can get same help from here. I started to put together a leaflet map, please see here: http://gis.xyz/leaflet2.html I want to show my postgis point (uk based) features on this map with ...
1
vote
0answers
14 views

Can HTML annotations be autogenerated for each location in QGIS 2.4

Can HTML Annotation Boxes be autogenerated on the whole map, linked to locations, and always have the same html file loaded for all of them?
0
votes
0answers
15 views

ArcGIS API for Javascript: Time Aware KML Animation

I am using ArcGIS API for Javascript. I would like to know how to animate a KML file with time-aware ground overlays using the built-in time slider?
4
votes
0answers
250 views

How do I install Orfeo toolbox and Qgis 1.9?

I'm having a lot of trouble getting Orfeo toolbox and Qgis 2.0 working. I followed the qgis wiki instructios, added the ppa, installed qgis 1.9 (it's beautiful, great work!). But when i tried to ...
1
vote
1answer
30 views

Split a polygon based on density of points in ArcGIS 10.1

I have two layers: Polygon layer representing administrative boundaries Polygon layer representing topography (i.e. a map) In some of the administrative areas, the buildings (shown in the map) are ...
0
votes
0answers
9 views

How to use Openweathermap's wms in ArcGIS Online?

I would like to add this wms service to ArcGIS online. http://wms.openweathermap.org/service Unlike in QGIS, when I added it to the web services, there is no way for me to choose which layer to add ...
2
votes
1answer
26 views

Easy way to render TileMill tiles in retina mode with Leaflet?

I have a few quick little map websites that run straight off TileMill, without pre-exporting. They usually have code like this: L.tileLayer('http://example.com:20008/tile/MyMap/{z}/{x}/{y}.png', ...
1
vote
1answer
21 views

finding the nearest point outside a series of geometries

I have db with a very large amount of geometries (circles), most of them overlapping. I'm trying to come up with a way to find the nearest point (from your current location) that is not within any of ...
0
votes
1answer
119 views

Problem executing Mean Shift Segmentation

I have a problem executing the Mean Shift Segmentation in QGIS with Orfeo Toolbox. I put all the parameter to execute and then, nearly 5s after appear the message that SEXTANTE could not open the ...
0
votes
2answers
56 views

How to style graduated using size-scale field

Is it possible to style based on size-scale field using graduated symbol but instead of using color ramp, I would like to display its size. I would also like to display this in the legend in the map ...
6
votes
4answers
159 views

How to use Leaflet to efficiently show parts of a massive dataset?

I keep seeing non-GIS web developers running into this problem, and I'm not sure what the solution is. There is some dataset of thousands of items. We want to show a map to the user, with the ...
2
votes
1answer
41 views

Updating and exporting XY positions in UTM and WGS84 to spreadsheet using ArcGIS ModelBuilder?

On a daily basis I'm editing the geographic positions of various points of a shapefile (corner_XY.shp) by dragging them on my map. When this editing task is done I'm updating the points coordinates in ...
0
votes
1answer
14 views

Creating dual lines with one line in geoserver

Im trying to figure if it is possible to create a two lines from one line say for instance a road. One to create the out lines as an underlaying color while another line creates a top color but a ...
9
votes
5answers
1k views

How to build a geographic database of GPS logs?

On our aerial wildlife surveys we typically generate dozens of GPX files, and usually convert most of them into shapefiles for display in a GIS application. GPX files are a terrific way of keeping all ...
2
votes
2answers
58 views

Deleting unconnected lines with QGIS

I am using a road map in shapefile format in order to calculate a route between two points. The map is downloaded from OpenStreetMap and it has small unconnected lines that are messing up my routing. ...
0
votes
1answer
21 views

How to convert Geographic wgs-84 to lambert (LCC_wgs 84 projection for a vector file?

I have one shape file with Geographic wgs-84 projection but i need to calculate geometry for that I tried to convert it into UTM projection system. As my data is of whole country so I can't give one ...
4
votes
1answer
316 views

How can I make a Postgres/PostGIS ST_Distance_sphere query more efficient?

Within Postgres/PostGIS I have written an SQL query to get the closest distance for each element within a point coordinate table from a polyline table. The query comes back and works correctly, but ...
3
votes
1answer
228 views

Python Postgres Multiprocessing speed increase

I'm trying to speed up my PostGIS queries using multiprocessing. My current setup is using python and psycopg2 such as below. Although this has given a speed increase, it still seems like there are ...
1
vote
1answer
26 views

Quality estimation of a spline interpolation with barriers

I interpolated the age of minerals for the Inner Tien Shan mountains (Kyrgyzstan) using the ArcGIS tool "spline with barriers". I use ~ 200 points for my interpolation. The barrier that I use is a ...
6
votes
1answer
668 views

ArcGIS JS API Relationship Queries

Has anyone ever put the results of a RelationshipQuery() into a map.infoWindow that's been replaced with a dijit.popup? Here's the workflow: User clicks a point, and all identify results are put ...
2
votes
1answer
36 views

Multivalue processing in the context of the modelbuilder

I am new to python so please bear with me. I have the following script that is supposed to get a multivalue parameter of several shapefiles as an input and then run the unionanalysis on all these ...
1
vote
1answer
47 views

How to migrate data directory of opengeo geoserver?

How to migrate data directory of geoserver in opengeosuite 3.1 to stand alone geoserver version 2.5.1. Is it to copy data directory and restart the server only or any thing else..
2
votes
0answers
30 views

Georeferencing declassified CORONA images of coastlines?

I'm trying to georeference declassified CORONA images of coastlines in order to asses coastline changes and human impact. In most case, georeferencing is easy, but since images of coastlines can only ...
0
votes
1answer
115 views

IOError: Decoder Zip Not Found while using mapproxy with mapserver in windows 7 64bit machine

I am new to GIS technology. I have configured a map server OSGEO4W. I am able to render maps using WMS and openlayers. But the rendering is very slow. For faster rendering I want to use Mapproxy. ...
2
votes
1answer
92 views

Radius of curvature for curves in road segments for entire road network

I have a road network shapefile for a US state and I am trying to derive the radius of curvature for road segments in this shapefile. I need to be able to perform this task within just a few functions ...

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