0
votes
1answer
264 views

Coordinate transformation/reprojection using DotSpatial

need some help. The following piece og code worked with an older version of DotSpatial. public static Geometry Project_EPSG25832_To_EPSG3857(byte[] wkb, int SRID) { ...
0
votes
0answers
3 views

Showing/displaying relationship between Earthquakes and Fracking operations?

I am presently analysing the relationship between hydraulic fracture operations and possible associated induced seismicity. I have both the earthquake data (as a shapefile with lat, long, magnitude ...
1
vote
0answers
3 views

Geocoding Adresses with varying levels of reporting accuracy?

I am trying to geocode a database that has, I'll call it "4 tiers", of address types. They are: Numbered Street (e.g. 506 Taproom Way) Cross-street (Happy Road $ Jubilant Blvd) Hundreds Block (500 ...
0
votes
0answers
4 views

Looking for a rivers layer for Indonesia

I am looking for a river database for Indonesia. I am aware of VMAP data and can make it myself from a DEM. What I really am looking for is a local product that contains rivers at the very local ...
3
votes
1answer
1k views

Opening geoprocessing tools causes ArcGIS to hang

I am getting the same problem as http://forums.arcgis.com/threads/19468-Opening-tools-causes-ArcMap-to-freeze-crash That is, when I open any geoprocessing tool in ArcCatalog (might happen in ArcMap ...
0
votes
0answers
7 views

Maps with numbers and postcodes using QGIS?

I have a list of UK postcodes and a number of participants in a survey. I would like to map the first three letters of the UK postcode and I would like a shape....a circular shape for example which ...
1
vote
1answer
134 views

Overlapping polygons in the same layer

I am working in QGIS on a vector layer where areas are classified using an attribute "typo". The problem I'm encountering is that many polygons are duplicated or overlapping, with the result that some ...
9
votes
1answer
1k views

Is it possible to show our custom message in QGIS Status bar using python?

Is there any way to show our custom message in Qgis Status bar using python? Just like in arcgis "IApplication.statusbar.message(0) = "Please wait..." like that is there any option to show ...
0
votes
1answer
521 views

SQL Geometry Query similar to Select by Centroid

Does anyone know if it's possible to query SQL geometry by something like 'centroid of polygon'...similar to ArcMap's select by location? I'm using SQL Server 2008 R2 as the DBMS. I have two polygon ...
0
votes
0answers
10 views

QGIS 2.6 Raster Calculator output is smaller than expected

I have used Raster Calculator to merge several raster layers. The layers were all created using geographical features in the same transect, but as the features are not evenly spread, the raster layers ...
0
votes
0answers
1 view

ArcGIS Data Interopabality Extension and Exporting from Mapcom M4

I am exporting from Mapcom's M4 database into Geodatabase or Shapefile. I have the ArcGIS Data Interopability extension and I was able to connect and export the Lines, Points, polys, etc. When I ...
-4
votes
0answers
17 views

How to export shapefile as KML file using GeoTools?

I have a shapefile i need to export the shapefile as a *.kml file to fit in Google Maps how can i do with GeoTools. Please help me with at least one simple example or procedure to do that?
0
votes
0answers
11 views

Removing ArcGIS Online icons in Mac menu bar?

I'm running ArcMap via VMware and each time I open it, an icon gets added to the menu bar. They never go away when I quit the program, so I wind up with quite a little collection until I reboot. ...
4
votes
1answer
158 views

Routing problem finding shortest route to line

inspiration on how to solve this problem. (Ascii art, I don't have points to insert picture) I need to find Z Z = Shortest route from X Using Road (no point exists here) O = The points that makes ...
0
votes
1answer
10 views

QGIS2Leaf Plugin installation error “cannot import name AlgorithmDecorator”

I have been using the qgis2leaf plugin and succeeded in creating interactive maps, adding legend, photos, etc. But suddenly I noticed that the OSM base layer has disappeared and the polygons are not ...
-1
votes
0answers
14 views

Finding proximity to waters, such as lakes, rivers, streams, the oceans

At Alz.care, we are working to detect whether someone who is living with Alzheimer's is nearing a body of water, because of the very high risk of drowning for persons with that neurocogntive disorder. ...
1
vote
1answer
43 views

How to create a sequence for a table which was created by selecting data from another table?

I have created a new table by selecting data from an existing table: CREATE TABLE polygon2 AS SELECT gid, geom FROM polygon1; CREATE SEQUENCE polygon2_gid_seq; SELECT SETVAL('polygon2_gid_seq', ...
-1
votes
0answers
21 views

Missing 'grounds' (bottom) of buildings as multipatches [on hold]

I have a model of buildings in shapefile (Multipatch). Buildings are not closed on bottom - they don't have a ground. I would like to ask if there is a workflow or how to do that automatically?
0
votes
0answers
5 views

PrintTask with proxy does not add the correct contet-type header: application/x-www-form-urlencoded

I am using a proxy which I have made on my own so as to perform the map export tasks. I have noticed that GET/POST requests use the content-type header: application/x-www-form-urlencoded. However ...
1
vote
2answers
79 views

Accessing NOAA web service with token

I recently requested a NOAA "token" to access their data. However, I keep receiving a "Token parameter is required" 404 error. Here is the URL I am using (note token is not the real one): ...
2
votes
1answer
239 views

Conflicting WGS84 coordinates between Trimble and Garmin GPS receivers

I am a contractor at a government facility in Nevada. We have our own in-house survey department who, for a number of reasons, still uses NAD27 State Plane Coordinates (Nevada Central Zone 2702) in ...
0
votes
1answer
53 views
+100

Merging linestrings in QGIS using PostgreSQL and PostGIS

I've to merge all linestrings from a PostgreSQL table "river" where not more than two start-/endpoints are overlapping. In the illustration below I use a "M" to mark all linestrings that needs to be ...
1
vote
1answer
391 views

GDal problem “no suitable image found” when I run “ogr2ogr” command

I am trying to run "ogr2ogr" command macbook$ sudo ogr2ogr -f "PostgreSQL" PG:"dbname=test user=postgres" /Users/macbook/planning.gdb But I am getting this error: dyld: Library not loaded: ...
2
votes
1answer
14 views

Cesium terrain tiles too high by roughly 30m

I'm using the NED 1/3 arc second data set to generate tiles to zoom level 15 for Cape Canaveral in Florida, and finding that the terrain looks accurate in appearance, but the elevation is too high by ...
0
votes
1answer
5 views

Unable to serve .terrain files in cesium sandcastle

I am learning 3d terrain generation using CesiumJS. I generated .terrain files usind Cesium terrain builder and kept them in 'cesium/apps' directory for testing purposes and to avoid CORS issues. ...
0
votes
2answers
167 views

Enlisting all OpenStreetMap (OSM) street names for General Transit Feed Specification (GTFS) routes?

I have exported OpenStreetMap (OSM) data of a city to my local postgresql db using osm2pgsql. I would like to add the General Transit Feed Specification (GTFS) routes information (say bus routes) ...
1
vote
0answers
25 views

import qgis.core problem with QgsFeature and QgsGeometry ImportError: DLL load failed: The specified procedure could not be found

I've tried several previous answers to similar questions - no luck. I've tried everything, nothing seems to work. This is the error I'm getting Traceback (most recent call last): File ...
0
votes
0answers
12 views

Get street addresses from Open Street Map

I want to get the street addresses for all the buildings in London from Open Street Map, but I'm not sure how to request for it? Can someone tell me what request precidate I should use?
0
votes
1answer
196 views

Wrong size when use Mapproxy to serve Mapnik tiles as ESPG: 900913

I have been stuck at this problem for a whole day. Really would like to ask for some help. Problem: In MapProxy Demo TMS page, EPSG:4326 looks fine, except the map is tilted and I don't want that. ...
0
votes
2answers
164 views

SnapToCurrentLayer in QGis2.8 with python programming

I have a polygon vector layer and I want to snap the vertex. def canvasMoveEvent(self,event):   x = event.pos().x()   y = event.pos().y()   startingPoint = QPoint(x,y) ...
0
votes
0answers
5 views

How do I search for features within a polygon in EarthExplorer or other freely available tool?

In USGS EarthExplorer, I'm trying to search for cemeteries within a defined area using a polygon created in Google Earth. If I select cemeteries under features, it clears that selection when I load ...
0
votes
0answers
4 views

Geoserver shape-zip archive response - setting UTF-8 character encoding for .dbf file?

I created a WPS request to Geoserver, that returns a shapefile as ZIP archive which contains several files, including .shp, .dbf and .cst files. Data columns in .dbf file are encoded based on the ...
6
votes
3answers
87 views

Waypoints with coordinates in R

I have a SpatialLineDataFrame with 20 observations of 4 variables (in WGS84). I want to create waypoints every 10 meters. Every waypoint will has the x y coordinates. I tried to do it manually like: ...
2
votes
2answers
163 views

Debugging ArcPy ImportToolBox AttributeError: Object: Tool or environment <ConcatenateRowValues_AA> not found?

I am trying to use the ConcatenateRowValues tool provided by ESRI. My overall code for my script is working fine except when it tries to use the ConcantenateRowValues Tool. I start by importing the ...
1
vote
1answer
27 views

How to compute equality of polygons in PostGIS independently of their orientation?

I tried some functions in postgis. Scope of work, get the equality of two shapes, independently of their orientation in the space. I detect the shapes from autocad and of course in lifetime of a ...
0
votes
3answers
74 views

Converting file geodatabase feature class to KML without using Esri software?

Admin boundaries are available in https://www.humanitarianresponse.info/en/operations/federated-states-micronesia/dataset/micronesia-federated-states-admin-level-1-boundaries as a file geodatabase ...
2
votes
1answer
39 views

How to perform viewshed analysis with Dutch AHN files?

i downloaded the new (dutch hight data) AHN files, and was trying to perform a viewshed analysis at some point near UTRECHT. The plugin (grass plugin) works ok, i tried it before with a dem map. ...
1
vote
1answer
175 views

Connecting to PostGIS (LATIN1) from Microsoft Access 2010 - Encoding problem?

I want to connect to a PostGIS table Using MS Access. The table has been created using the PostGIS Shapefile loader in pgAdmin. It has been encoded at LATIN1 (it wouldn't load with UTF-8 default). I ...
-1
votes
0answers
45 views

How to represent distance between points in map using ArcGIS 10.1

I have a shapefile showing the distance from each village to its nearest health facility. Using a map( ArcGIS 10.1) how can I represent my results rather than just using a graph?
1
vote
1answer
490 views

ESRI Javascript API Geocoder VS Locator module

What's the difference between ESRI's Geocoder and Locator module in the javascript API? I know the Geocoder defaults to ESRI's geocoding service, or both modules can be set to a custom Address Locator ...
2
votes
0answers
24 views

Application of a Piecewise Logistic Function to Extract Seasonality Metrics

I am working with 16-day MODIS EVI (satellite) data and I want to fit a Piecewise Logistic Function through my 23 EVI data values. The following formula is for the Piecewise Logistic Function: y(t)= ...
0
votes
0answers
8 views

How can I get a ModelAndView in geoserver's OWS?

I'm Implementing a geoserver's OWS. I want to a specific method of the OWS get a ModelAndView as following: import java.io.IOException; import javax.servlet.ServletException; import ...
3
votes
0answers
60 views

Which projection can I use to see alignments on great circles?

I want to put on a QGIS map some historical sites to check if they are aligned. If an alignement exists, the points should stay on a great circle (is this correct?). I want to visually verify this ...
1
vote
0answers
17 views

Qgis2leaf doesn't show layers with scale-dependent visibility

When I add layers to the QGIS2LEAF dialog box it accepts it and opens up the preview in my web browser, but when I starting looking for the layers, in this case points for campgrounds, I dont see any ...
1
vote
1answer
141 views

Add Field, Calculate Field within Model Builder

I have two questions regarding Model Builder. I have a point layer with Crop Yield values. I need to Add Field called "Count", then do a Calculate Field, Count = 1. The problem that I'm running into ...
11
votes
2answers
4k views

How to Export Feature GeoJSON from PostGIS

I'd like to do a GeoJSON dump of a PostGIS table, but I want to export features (the geometry and the properties) not just the geometry. I've been digging into the ST_AsGeoJSON function but it looks ...
0
votes
2answers
136 views

Cost-Distance Tool not producing logical answer

I am working on creating a cost catchment based on Tobler's equation in ArcGIS10.1. I feel confident in my cost surface; it produces a raster where each cell equals the time in hours that it would ...
1
vote
2answers
66 views

Export Google Maps Route to KML/GPX

Since Google pulled the plug on Google Maps Classic, I'm reluctantly moving to its Google Maps New application. However, I didn't find how to export a route to a GPX or KML file so it can be copied ...
0
votes
0answers
7 views

Shapefile not displaying in ArcGis Android SDK 10.2.6-2

I am trying to load a shapefile (not displaying at the moment) using the following: Hardware: Android rugged tablet running Android 4.2 SDK: ArcGis 10.2.6-2 Shapefile: ...
1
vote
1answer
173 views

OpenLayers not displaying map from WMS layer in GeoServer

I've adapted the working example from geo-solutions website but still it is not working, it seems the problem is with jetty. below is the previous question I'm using Geoserver with jetty web server, ...

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