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Scientists have projected the size and location of changes in Earth’s surface following the September 2015 earthquake and tsunami off Chile. أكثر...

I was wondering if anyone knew of a way to alter the selection within the Editor Attributes window while maintaining the current selection set. In the image below, I've manually selected an item in the selection set so that attributes of the item are visible. I was hoping to programmatically...

I’d like to organise a tour around the lake with 2 objectives: maximise the length of shores to view minimise travel distance In order to do so I can: Pick 2 most remote points on the lake in terms of travelling distance Define ‘left’ and ‘right’ shores of the lake Travel at equal distance...

I am new to QGIS. I have two layers: Layer A: Large polygons joining areas, lets call them countries. Layer B: Smaller polygons(States) containing population count data within the large areas(countries). I would like to summate all the state count data for each country. أكثر...

TweetSome interesting stuff regarding Google’s handling and indexing of PR releases – and I know that if your business is Geotech that you send your press releases to GISuser.com!* This from CyberAlert… Those questioning the value of press releases may wish to consider a recent, small and...

I`m trying to sylte a layer with MultiPolygon [the_geom] geometry.At scale < 5000 I´d like to show only borders under scale 500 labelsas well. Unfortunately strokes are never shown. What am I doing wrong? This is what I have: [@scale < 5000] { stroke-width: 0.26; stroke: black...

I'm trying to be more specific with a question. I have several sample locations, that have been sampled several times at the same location. I want to label each location with stacked data from each location. So it would hopefully look like this "Sample Location 1: Depth 0-6: .314 Depth 6-12...

As a child, nothing was more exciting to me than a chance to ride on an airplane. And after enjoying playing with the seatbelt buckle and feeling the crazy push of take-off acceleration, I would usually settle in and page to the back of the in-flight magazine where the airline route maps were...

I have a DEM layer in ArcMap 10.2 which I then clipped to fit a large shapefile. I'm trying to find the area of the new DEM shape using the Image Analysis tools, specifically the Mensuration tools. I keep getting an error message "Not all points are in the current image". I haven't used these...

I'm trying the learn the ropes of Remote Sensing image processing using Python GDAL bindings and numpy. As a first attempt, I'm reading a Landsat8 geotiff file, do a simple manipulation and write the result to a new file. The code below appears to work fine, except that the original raster is...

I am developing a plugin which I would like to add to the Database menu instead of the default Plugins menu. According to the PyQGIS Developer Cookbook all I have to do is add category=Databaseto my plugin's metadata.txt. However, that does not have any effect. Do I have to add something in...

I am wondering how to specify what raster you are getting the band from in the global mapper raster calculator? When you open it with a more then one raster open you can check the boxes to define which ones you use. But once you are in the actual calculator there is no way (that i can see) to...

I have a raster dataset (USDA Cropscape dataset) where each pixel is given a crop or landcover type (eg, corn, rice, urban area, forest). Some of the pixel values are classified as more than 1 crop/landcover type. For example, there are 40,000 pixels that are classified as “Double Crop...

In QGIS, when I change from single symbol to a graduated style, the map "disappears." When I change it back to single symbol, the map "reappears." The issue doesn't appear to be the scale, since it remains unchanged. When I copy the layers into ArcMap, there is no problem. What is causing this...

The 21,000 students of the recently completed Massive Open Online Course (MOOC) confirmed that Geospatial Intelligence, or GEOINT, is an internationally recognized concept. The international notion of GEOINT goes beyond the narrow national defense-related definition in the U.S. Code. GEOINT...

I'm working with script code in python for some processes from raster layers, my code takes the raster files, create arrays of data, manipulate the data and then creates a rater output with the results. My problem is, this process much load my ram and my computer dies. I'm working with basins...

There is "new OpenLayers.Layer.MapServer" in openlayers2.Is there same function in OL3? regards أكثر...

So i have several folders which each contain a gdb. Now, I export the attribute tables of polygon feature classes using the following code (probably could use some optimization): folder = arcpy.GetParameterAsText(0)for dirpath, dirnames, filenames in arcpy.da.Walk(folder...

I am using published forest loss data (found here: http://glad.geog.umd.edu/indonesia/data2014/index.html) that uses the ArcInfo Sphere datum with a sinusoidal projection. I am seeking to transform a DEM (I've tried Aster and SRTM), or any raster in GCS_WGS_194, really, into this...

Is there a way to query basemap to extract all coastal coordinates? Say user provides lat/lng and the function returns true/false if the coordinates are within 1km from the coast? Links are more than welcome. أكثر...