3
votes
3answers
724 views

osm2pgsql --hstore

I'm working with postgreSQL 8.$ and PostGIS and I need to import osm file to database. I tried it with utility osm2pgsql, but I have problem with hstore extension. Does anyone know how to solve this ...
2
votes
2answers
481 views

ST_ShortestLine gives different results for 4326 and 900913 projections. Which is correct?

I'm trying to get my head around how ST_ShortestLine (and ST_Distance and ST_LineLocatePoint) work with different projections. The result for the shortest line differs depending on which projection I ...
1
vote
2answers
3k views

How to use Sharpmap to display spatial data from MS SQL Server 2008

Can anyone show me a step by step example on how to use Sharpmap to display MS SQL server spatial data using C# as the programming language? Please note I have exploit some of the example online but ...
1
vote
1answer
351 views

Where to download Print Widget for ArcGIS Flex Viewer 3.4?

I would like to download the Print Widget for ArcGIS Flex Viewer 3.4 which contains Scale Units like below: Does anyone know where I can do that, please?
1
vote
1answer
879 views

Resolving invalid workspace error

I have been using a third party ArcGIS tool called Landscape Fragmentation Tool. I originally had some troubles getting it to work correctly. Approximately 3 weeks ago I thought I had resolved those ...
0
votes
2answers
61 views

after reinstall geoserver how to locate old geoserver files [closed]

i have published lots of Arch GIS map on Geo server software. but few days ago because of some problem in my system i have uninstalled Geo server 2.1.4 from my system. but i kept a copy of my Geo ...
2
votes
1answer
1k views

How to create a QGIS action which copies features between layers?

i tried (i never tried before...) to write a simple python code like action in QGIS on my "XXX" vector layer that: open a layer "YYY" copy the selected feature on my "XXX"layer paste the selected ...
1
vote
1answer
227 views

Raster Smoothing python [duplicate]

I want to perform raster smoothing on a DEM file. I want to to assign the elevation of each pixel using the average elevations of its 8 neighbors. The ESRI's "Python scripting for ArcGIS" has a ...
1
vote
0answers
86 views

How to make gdalbuildvrt available in processing modeller?

I would like to make a model in QGIS that builds a virtualraster from several raster files. Unfortunately the gdal function is not available on the modeller. So, my question is: how to make this ...
4
votes
1answer
273 views

Examples of using GIS in outer space

is there any examples or use cases of using GIS in outer space and in no-earth related use ?
2
votes
0answers
132 views

Set bounds based on layer size

I am using GeoServer+OpenLayers and I have a base layer (Google map) and some additional layers (OpenLayers.Layer.WMS); users can show or hide these layers. I would like when user show a layer then ...
2
votes
4answers
1k views

How to create random point in according polygon for each dataset entry in a list (with R)

I have an area divided into polygons, and a dataset of observations which has a common field with the polygon layer. I now would like to generate a random point for each dataset entry within the ...
1
vote
0answers
378 views

Matplotlib Basemap Resolution with PyQt makes Python Quit Unexpectedly

I'm having difficulties using Matplotlibs Basemap in combination with a PyQt4 interface. Basically I create a Pyqt4 Canvas in which I plot a Matplotlib Basemap and some markers. I call the function in ...
3
votes
1answer
1k views

How can I get the elevation of a point in openlayers?

I want to know if it is possible to obtain the elevation of a point with some type of control of others. I am painting a linestring with a series of coordinates but I need to know the elevation of ...
1
vote
0answers
12 views

Google Earth multiselect points to delete or drag & drop [duplicate]

How can i select multiple items in Google's Earth sidebar "places" menu to delete or to move to a folder?
3
votes
3answers
1k views

How to select features with NULL Geometry from Shapefiles?

I have been given a Shapefile that contains records with NULL geometry, along with records with non-NULL geometry. This situation appears to cause problems in QGIS (1.8 and 2.0) when editing the ...
3
votes
1answer
457 views

Topographic tile cache needed to replace OSM street map data in an app

I have developed and marketed an application that successfully uses a pre loaded tile cache of Open Street Map .png files for a small city area about 20km x20km to support the presentation of tourist ...
3
votes
1answer
88 views

List of actual GPS position

I have a question - where can I find a list of actual GPS position, for example - ships, airplanes etc. I need it for my project for College - I will create mobile/desktop/web app, which will show ...
0
votes
2answers
853 views

Insert image in attribute table(unable to save edits operation attempted on empty geometry)

I have been trying to associate/insert images in an attribute table. I have created a field called pictures and data type is Raster. ( I have used this resource video to do the task) Once I load the ...
1
vote
0answers
98 views

Is it possible to cut/filter all layers to an area of interest in one step?

The problem of working with a lot of data (about 100 layers). Very slow computer, rendering long. Vector -> Geoprocessing Tools -> Clip a very good tool, but replace the 100 layers is very high and ...
0
votes
1answer
507 views

How to set up parameters in Python toolbox tools?

I build a model builder and export it to python. How can I define parameters for python script in python properties? May you explain about Data type in script proprties? thanks alot
2
votes
1answer
1k views

What are the units for Garmin's GPX gpxtpx:speed?

I have a Garmin Nüvi GPS and it's filled with XML records that look like this: <trkpt lat="38.900207" lon="-77.008990"> <ele>11.67</ele><time>2013-06-11T04:04:49Z</time> ...
1
vote
1answer
959 views

How to change the color of red edit-polygon or purple snap-confirmation?

I'm having trouble seeing the purple or pink snapping confirmation when drawing a polygon because the temporary polygon is red (QGIS 2.0.1). Also the vertices in edit mode are also red. I looked ...
2
votes
0answers
124 views

How to sort legend values efficiently in QGIS print composer?

Using QGIS 2.0, I have a vertical color legend for raster values, created in the print composer. I want the values sorted in descending order from top to bottom, which appears to be the reverse of the ...
2
votes
1answer
1k views

GeoTools and PostGIS with ESPG:3857

I'm trying to use both PostGIS and GeoTools with the same ESPG:3857 projection, however, it looks like the projections in PostGIS and GeoTools differ. This is what I have in PostGIS: PROJCS["WGS 84 ...
1
vote
1answer
280 views

Is there permalink in openlayers 3?

As title says , I've tried to look for it and didn't find a way to do it. Did I miss it or it wasn't implemented yet ? I consider switching to OL 3 because of the export feature (I want to add easy ...
2
votes
0answers
189 views

How can I retrieve/query data from shape file for forms/grid in website?

I've made a site using openlayers and geoserver. currently im serving WMS layers from geoserver (shape files). I want to add in my site a search form that the user can search for data (which I have in ...
2
votes
1answer
474 views

GTOPO30 Slope analysis in ArcGIS 10.1 [duplicate]

Using surface - slope analysis tool box. All values for the slope calculation are in between 80 and 89. There are no values below 80. What am I doing wrong?
2
votes
1answer
157 views

How to make marker line thicker in QGIS?

I'm mapping railways, find that the usual cross marker line is so thin it doesn't show up in Print Composer at web resolution, and can't find any way of making it thicker, only the main line. Is there ...
2
votes
1answer
970 views

Custom ArcGIS GraphicsLayer (JavaScript)

I am working on an application that will retrieve data from various sources and construct ESRI GraphicsLayer objects from the data and display it on a map. I have created custom FeatureLayers before ...
3
votes
1answer
242 views

How to mark a particular point in MapPanel?

There is a component called MapPanel, which displays OpenStreetMaps. I want to mark some places on the displayed map, without changing the underlying map. Those marked places are identified by ...
1
vote
0answers
55 views

OpenLayers - Get LayerName from GML Response object

I am using the WMGetFeatureInfo control in OpenLayers to select items from my layers and return GML. I use this to get an attribute from the GML; var val = evt.features[0].attributes.UID; //Where ...
1
vote
1answer
635 views

Problem creating a popup in mobile openlayer

I'm trying to use the mobile version of openlayer, unfortunately I could not use framedcloud in it, I could only create a square popup does not look very aesthetic, besides the main need is to ...
2
votes
0answers
214 views

Batch/Bulk Insert ADO.Net collection in MapXtreme Table

I am working on MapXtreme 7.1 and using MICommand to insert data in a table. I have more then 10,000 records and i am inserting these using a loop. That is Geometry = new ...
6
votes
1answer
328 views

How to create a chart of elevation using points?

I am using shapefiles with basic information including the x-, y- and z-coordinates. I want to see how the objects (in this case points, which are finds from an excavation) are scattered along the ...
3
votes
1answer
858 views

Plotting multiple addresses with distance to specific POI

I'm not sure if this is the correct place for this question but here goes. I am getting ready to move to a different city. Right now I have about 80 houses to choose from. One of my parameters for ...
2
votes
1answer
132 views

Need help regarding Hot-spot Analysis through ArcGIS JSAPI 3.6/3.7

I am going through Hotspot Analysis through java script sample and I want to perform similar thing at my end. While accessing this sample it taking too much time to display the result (for sign in I ...
1
vote
2answers
3k views

Convert .asc format into shapefile

I've got some data from "http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp" and it is in *.asc form. To process them I need to convert them to shapefile (need to merge them all into one shapefile and ...
1
vote
0answers
323 views

Prevent OpenLayers ClickEvent from firing on Popup closeButton

My Code to add popups as selectControl to a Layer. Works fine! map.addLayer(window.markerLayer); // SelectControl für Marker --> Popup window.selectControl = new ...
3
votes
1answer
228 views

Converting map image to GIS

I’m very new to GIS, and I’ve been reading a lot of manuals and information, but I thought I’d ask a couple of questions here. One of my major hobbies is drawing maps of a completely imaginary ...
1
vote
0answers
231 views

Openlayers - How to put street view icon on google layer?

I have a basic OL map with google layer. http://jsfiddle.net/Alophind/bDzg7/ I've read in similiar questions that the following css disable the google street view icon: img {max-width: 100%;} So ...
3
votes
2answers
620 views

Geostationary Satellite Projection

What is the equation needed for forward and inverse transformation of Geostationary Satellite projection.?. How to convert it to Geodetic and vice versa. Geostationary satellite projection is ...
1
vote
1answer
149 views

How to perform intersect operations in the Field Calculator in QGIS?

How to use the Intersect function? How would I specify to REPLACE layer1.field1 with layer2.field2 WHEN layer1.geometry INTERSECTS layer2.geometry Is that feasible in QGIS?
2
votes
0answers
239 views

How to copy the contents of an attribute from one vector layer to another one that touches it or intersects it?

I have 2 layers that intersect, called layer A and layer B. Layer A has an attribute (X) that I want to copy wholesale (for the whole layer) to layer B, so that when object A1 intersects object B1, ...
5
votes
2answers
2k views

OGR merge shapefiles of different geom type into a single GeoJSON feature collection

I'd like to merge shapefiles of different geometry types into a single geojson feature collection, but OGR says it doesn't support update of GeoJSON files: $ ogr2ogr -f GeoJSON -t_srs crs:84 -lco ...
3
votes
2answers
596 views

Partial Map Pixel Projections

I have the following: A PNG or JPG of a random width and height, in pixels, that represents a partial map of the world (i.e. a rectangle of the United States). The four corners of this image are ...
1
vote
1answer
165 views

Problem loading raster QGIS 2.0

I am very new at GIS. I am trying to load a raster so that I can complete a tutorial on georeferencing. The raster file is a jpeg. However, whenever I try to load the raster, it gives me solid colored ...
3
votes
1answer
325 views

Routing with osm2po - starting from middle of the street

I'm currently looking at using osm2po's java library to build a simple application that builds a shortest path between my favorite bars :) However, I'd like to start at any location, not at an ...
1
vote
1answer
219 views

Access attributes on featureCollection

The geoJSON-String: { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": {"title": "Standort 1 "}, "geometry": { "type": "Point", ...
2
votes
1answer
363 views

Batch Update Fields in Field Calculator or Model

I have a dataset of block-level census data that I clipped to an Illinois State Senate district. To update the data (e.g. for population) I'm applying an area multiplier, i.e taking the area of each ...

15 30 50 per page