-1
votes
1answer
24 views

Google Maps and Postgresql

I am looking for a way to visualize data from Postgres in Google Maps, but I have only figured out how to do this for Markers. I am using PHP to retrieve the data in JSON, which I then request from ...
1
vote
2answers
36 views

OpenLayers 3 or 2

I am beginner in OpenLayers and am starting with the www.openlayers.org documents, which use OpenLayers 3 to teach the basics of OpenLayers. Now, I would like to add layers from Google Maps and ...
-1
votes
1answer
24 views

PostGIS ST_Transform question

I have a query that returns the extent of a polygon. "SELECT ST_Extent(geom) FROM nct_cov WHERE prop_name = 'SLATE HILL'" It works fine, however I want to transform it using ST_Transform, however ...
1
vote
1answer
22 views

why use openlayers with mapserver?

i am beginner in mapserver and openlayers. i start with mapserver and now studying openlayers and see openlayers can render vectors directly. my questions is : why use mapserver inside openlayers ...
1
vote
1answer
33 views

Open Source solution to batch process shortest distance between points along road networks?

I have the locations geocoded (a fairly small dataset, ~200), but I haven't found a straightforward way to load these data into QGIS and perform network analysis between nodes. Any suggestions? ...
0
votes
0answers
7 views

Displaying ESRI WMS layers in OpenLayers 3

I'm looking for an example that demonstrates how ESRI WMS can be displayed with OpenLayers 3. In OpenLayers 2, we had a OpenLayers.Layer.ArcGIS93Rest class (see example and docs). layer = new ...
1
vote
1answer
25 views

Convert From Northing/Eastings to Latitude/Longitude with QGIS

How can I convert a file with the projection below (NAD83) to one with Latitude and Longitude? The import file is a SHP file and I would like to export back out a SHP file. +proj=tmerc +lat_0=0 ...
0
votes
1answer
23 views

Problem with Leafletjs and geoJson

I am new to Leafletjs and I am trying to figure out how to plot a polyline on a map using a geoJson object. I've gotten as far as getting a map, making it centered on a given lat/long and setting the ...
0
votes
2answers
27 views

Postgis: Point-in-polygon check + feature attributes inheritance

I have two tables in Postgis 2.1 database: Polygon features with a reach attributive information; Regular point grid; I would like to get a SQL query returning the regular point grid with ...
1
vote
0answers
10 views

How to use leaflet-plugins with typescript

I'm attempting to add a bing map layer and a google maps layer to my leaflet map. I am using the typescript type definitions for leaflet rather than the leaflet.js file. To add the layers, I was using ...
0
votes
0answers
24 views

Calculating angle of telemetry GPS points in ArcGIS for Desktop?

Does anyone know if it is possible to calculate the angle of telemetry GPS points in ArcMap?
2
votes
0answers
22 views

Assigning Color Ramp using PyQGIS

According to the PyQGIS Cookbook, a color ramp can be assigned in the following way: rlayer.setColorShadingAlgorithm(QgsRasterLayer.ColorRampShader) lst = [ QgsColorRampShader.ColorRampItem(0, ...
1
vote
0answers
10 views

Editing data with Server Object Extension?

Is it possible to use an interface such as IWorkspaceEdit within an Server Object Extension to create new features or update data in a geodatabse? Perhaps this can only be done through a managed ...
1
vote
1answer
33 views

Finding duplicated Parcel according to two fields?

I have parcel layer (geodatabase), which has total number of 250,000 parcels, and I want check if the parcel is duplicated. In other words I want to find out the the rows which have the same Block ...
1
vote
0answers
23 views

Meaning of no polygon data available for your selection when using CartoDB to georeference spreadsheet?

I linked my cartodb map to a spreadsheet in Google Docs that has column headings of Name, City, State and Pledge. However, when I try to georeference the spreadsheet, for the cities, I get an error ...
0
votes
1answer
32 views

Sorting an UpdateCursor [duplicate]

I'm trying to sort a dataset by field StartTime (datatype date, indicates when a technician is supposed to start a visit). I am including a SQL where_clause to avoid an earlier problem when it ...
0
votes
1answer
15 views

OpenLayers 3 drag and drop interaction with custom projection problem

I am trying to add layers by using drag and drop interaction. Here is jsfiddle.http://jsfiddle.net/anuket/umdwzn10/ It almost works, I mean new layer is added, but for Geometry it gives "NaN". Geojson ...
3
votes
2answers
26 views

Generic Grid to Coordinate System

I have been given a large dataset of X,Y positions of animal movements in a generic grid system. It uses 0,0 as an origin and then position units are in feet from origin. I have the geo-referenced ...
1
vote
0answers
34 views

Why do pgadmin III views show up as empty ArcSDE geodatabase tables in ArcCatalog? [on hold]

I have an SDE geodatabase connection set up in a server with data stored in a postgres database. I have successfully created views using pgadmin III but they show up as empty tables in ArcCatalog ...
1
vote
1answer
21 views

How do I get the legend from a ArcGISDynamicMapServiceLayer using esri javascript api?

So I've been using the ESRI Javascript API, so far what I've been able to do is create a map, fetch a layer from another source and combine them, but I'm stuck on grabbing the legend from the other ...
1
vote
2answers
17 views

Reproject GeoJSON in OpenLayers 3

I'm basically trying (and failing) to replicate this in OpenLayers 3. I've set up a fiddle here: http://jsfiddle.net/vu8ecy8v/5/ I'm under the impression that OpenLayers will reproject a GeoJSON ...
0
votes
1answer
52 views

Creating Map from database

I'd like some general advice on creating dynamic maps. I have a bunch of geospatial points saved on SQL Server and PostgreSQL. People will enter new data into the databases from time to time. I want ...
0
votes
0answers
8 views

working with image service and mosaic rule lock raster method, how can the lock IDs be set by the user

I have an image service with many overlapping rasters that I have loaded into a map. I would like for the user to be able to choose which rasters they would like to view. I know I can use the mosaic ...
0
votes
0answers
9 views

Get Polygons from OSM Change file

Is it possible to get the polygons from the OSM change files to track the newly created dirty areas for cache production? If so, how? Can those polygon files be converted to shapefiles? Can you ...
2
votes
0answers
38 views
+100

How to access a Feature service hosted on arcgis.com which is shared only with particular groups or organization

In my C# application, I am trying to access a Feature service which is hosted on arcgis.com. The feature service is shared only with a group or organization and is NOT public. How can I access this ...
0
votes
0answers
6 views

Arcobjects: Track new point from button click in DockWindow

I am wondering if anyone might have a potential solution for a problem i'm encountering in ArcObjects. I am trying to track a screen location on the map. after a button is clicked in my DockWindow ...
2
votes
0answers
28 views

How do I match two point layers (with different gridding) to a common grid?

Here's the problem I'm struggling with: I have two different point layers, where points represent centroids of areas covering a stream segment. One layer (lets call it layer A) is coarser, with fewer ...
1
vote
2answers
38 views

Contour of single feature on QGIS

I'm trying to extract one single contour line at given elevation from a DEM. Taking into account that I want only one contour and not all contours with the given elevation, is there a way to do it in ...
1
vote
1answer
13 views

Print with different settings of layer view?

Using QGIS is it possible to print on the same paper two windows with different settings of layer? I mean: window1: layer1 ON - layer2 OFF window2: layer1 OFF - layer2 ON
5
votes
1answer
51 views

How can I match the cells of two rasters?

I have many raster files each one containing information that is different from the others (e.g. one contains information on rain, the other on altitude, and another on land use). The cells in each ...
1
vote
1answer
35 views

Suggestion for java based GIS sdk for desktop application

I am developing a desktop GIS application using JavaFX that needs to run on Linux. I have been using ArcGIS java sdk and it is really good for all my requirements. But when I started testing it on our ...
2
votes
2answers
44 views

Printing A3 format map

I have a question about printing A3 map from QGIS. I'm going to make A3 map of one country and nearby countries, digitalise borders etc. I want to save it to A3 format, but I have only A4 printer, ...
2
votes
1answer
29 views

Problem with first page of data driven pages

I'm working on creating a set of data driven pages of quarter sections in a township. QutrSecs is the layer, QTR is the Name field (e.g. NE, NW, etc.) and sort field is SECTIONS (e.g. 01 -36), so that ...
1
vote
1answer
25 views

How to load territorial maps on QGIS from web?

Is it possible to use QGIS like Google Earth? I need to draw simple shapes on territorial maps. I would like to do that without using multiple files for each part of the Earth. I use QGIS 1.8, but I ...
0
votes
0answers
4 views

OpenLayers gx_geocodercombo returns syntax error

I try to implement a gx_geocoder combobox... { xtype: "gx_geocodercombo", hideTrigger: true, emptyText: 'Enter address (streetname housenumber municipality)', width: 350, layer: ...
1
vote
2answers
17 views

How to see whether a set of postcodes have a typical distribution to the whole postcode population of UK?

For my dissertation I have a dataset of postcodes of 9984 that I am converting to coordinates atm. I looking to find whether this dataset has a 'typical or 'atypical' spatial distribution compared ...
1
vote
0answers
20 views

Trying to make a depth map of a lake but can't get the contours to show up right

I am trying to make a depth map of a lake. I am using the contour plugin to generate contour lines. The problem I am having is that when I use the plugin the contours come out right except on the ...
0
votes
1answer
11 views

OpenLayers 2: WFS layer not being portrayed in map canvas

I have a "rich" application (OL 2.13 + GeoExt 1) where some layers must be styled dynamically according to user input. I am able to add a vector layer using WFS and then apply a style rule. Recently, ...
0
votes
1answer
34 views

How to calculate the river slope for a lot of rivers automatically in ArcMap?

I'm working with ArcMap 10.2 and I'm pretty new in this area.. What I want to do is compute the river slope for a lot of rivers from a DTM...I know that there is a way to do it manually passing by ...
2
votes
5answers
155 views

How to (quickly) count the number of rows in ArcGIS attribute table?

How can I quickly see how many rows of data are in my attribute table in a large file without having to scroll right down to the bottom? Is there a way of removing the * so that I can quickly see ...
0
votes
3answers
28 views

Find the length of a road inside a polygon and a buffer

I'm a bit new to ArcMap but know the basics. I have to find the lenght of roads(lines) innside my polgon and the buffer innside the polygon and the area the buffer is created around. have one layer ...
0
votes
0answers
23 views

How can include a 3D Analyst tool into a custom model builder tool?

I trying to include the ¨Profile Graph tool¨ contained into 3D Analyst toolbar, into a custom model toolbox. Thank you
1
vote
0answers
25 views

Raster calculation with string in modeler

In my model I have one raster file and also a string input (factor for further calculation). I tried to use the grass r.mapcalculator where I can find the raster and also the string input. I tried to ...
0
votes
1answer
22 views

how to make attribute read only arcobjects

I have created add-in toolbar with C# arcobjects. I am creating some empty geodatabase shapefiles. While creating featureclass i want to assign some default value to attribute and then make it ...
2
votes
1answer
38 views

Save Polygons as new Features in geoserver

I enabled the functionality to draw Polygons, as in the example. http://dev.openlayers.org/examples/draw-feature.html Now I want that, once I created a polygon, this polygon is saved as a feature ...
0
votes
0answers
10 views

OpenStreetMap with OL3 and EPSG:3301 projection

Trying to add OSM layer to my map, as Tile layer or as WMS layer, but for Tile layer it is appearing in different projection, and for WMS layer there are error Resource interpreted as Image but ...
1
vote
1answer
19 views

Problem by changing the order of Layers in QGis Layer Tree

I'm using QGis 2.4 on a virtual machine (Ubuntu 14.4 with XFCE). I'm connected to the VM via vncviewer, what works pretty well. But now I want to add some more layers to an existing QGis Project. ...
0
votes
1answer
13 views

Add Marker on the polygons' centre using Openlayers?

I have written a code to draw polygon from the WKT format.Now I need to add the marker at its centre. In the following code I have passed the centre and shape in WKT format(extracted from database). ...
2
votes
2answers
68 views

Can't transform lines to polygons

I have a similar question to: How to join lines in QGIS for later using "lines to poly"? I have a line shapefile that I wish to transform into a polygon shapefile. After making some ...
1
vote
1answer
27 views

How do you extract the data behind a raster histogram

Bit of a newbie, so this may be a daft question. I have an .ecw picture - it is has no CRS, as it is a picture taken at ground level with an NIR camera. It was originally converted from a RAW image. ...

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