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I have a set of ~100,000 polygons (.shp format). Using python and ogr I would like to dissolve them to one feature class to speed up other downstream operations. The command I am using is: ogr2ogr -f "ESRI Shapefile" dissolved.shp input.shp -dialect sqlite -sql "select...

I install Qgis 2.12 but after installation I try to open Qgis and I resive this three errors. "The program Can't start because qgis_xxx.dll is missing from your computer. Try reinstalling the programm to fix this problem"I reinstall Qgis but nothing cahange and the same errors. أكثر...

Most people associate drones with the military – an invasive eagle eye hovering from above. What many people don’t realize, however, is the tremendous good drones can do. Information from drones can be used for valuable data collection, telling us things we can’t see from the ground and helping...

Welcome to our new website! We wanted to update to a more modern build and shift to a new hosting provider, so we decided it was a good time to go ahead and update the site. While the site itself may be new, we took particular care to make sure we retained all the key elements that bring people...

البحوث الجامعيَّة في المغرب بين طغيان الكم وغياب الرصانة يَحلو للطلبة وهم يفتتحون بُحوثهم الجامعية أن يكتبوا عبارات مسكوكة للشكر والثناء والإهداء لأمهاتهم، لعائلاتهم ولكل الذين ساندوهم في مشوارهم الدراسي. خاصة وأن ختام سنوات التحصيل في أغلب التخصصات الآداب والعلوم الإنسانية والاقتصادية...

I would like to get a list of road features that intersect every county in a state and output it as CSV or Excel. Ex: county A intersect the Road Names- a- b- ccounty B intersect the Road Names- e- fAny ideas using FME?Thanks! Thanks أكثر...

Installing QGIS 2.12 on Ubuntu 14.04 from the debian trusty ppa. Upon opening QGIS I notice the following error under the Processing tab: Problem with SAGA installation: SAGA was not found or is not correctly installedIf I execute sudo apt-get install saga I then get that the version installed...

I have a problem with the CSW service (Problem Loaded CSW service). Geoserver shows an error: ERROR [org.geoserver] - Failed to load the service configuration in directory: /var/lib/tomcat8/webapps/geoserver/data/workspaces/vrb with loader for interface...

I have some problems with running SAGA tools in QGIS. I've downloaded and installed the software via the OSGeo4W Installer. It downloaded QGIS 2.12 and Saga 2.1.2. I wanted to use the Tool "Shapes To Grid" to convert a Point Feature to a Raster but I've always got the Error that the...

I just downloaded the SimpleSvg plugin in QGIS 2.12, Mac OS X, and I get the following error: Couldn't load plugin simplesvg due to an error when calling its initGui() method "TypeError: QLineEdit.setText(QString): argument 1 has unexpected type 'QPyNullVariant' Traceback (most recent call...

Have installed QGIS 2.12 under Mac OS x 10.9 Mavericks. Had problems when I upgraded to OS X 10.10 so reverted back to 10.9. Will QGIS stop working again if I upgrade to OS X 10.12? Anyone have any experiences? أكثر...

By*Kelsey Maloney A recent picture of Lake Mead If you’ve ever been to the Hoover Dam, you know that a picture just doesn’t do justice to its actual size. Here’s a fun fact: the Hoover Dam stands at 726 ft., a whopping 171 ft. taller than the Washington Monument. Although the Hoover Dam is a...

Dana Eckstein shows off her dress made of recyclable CDs for an America Recycles Day fashion show. By Rachel Chaput The U.S. Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) is focused on sustainability every day with everything from a composting program in the cafeteria...

Consider there are two raster datasets that have been generated by kriging interpolation (Spatial Analyst toolbox in ArcGIS 9.3). One raster- (a) contains certain values 'x'and the other raster- (b) has values 'y'. Now using raster (b) as input for the reclassify tool from Spatial Analyst...

I'm trying to process globcover, which is a .tif file of 374mb. Running the following code: File tiffFile = new File("C:\\Users\\CAA\\Desktop\\test.tif"); GeoTiffReader reader = new GeoTiffReader(tiffFile); grid =reader.read(null);gridData = grid.getRenderedImage().getData()...

I have a list of GPS coordinates and I have no clue what format they are in. Suggestions? As is:(1) 1000350 1259062(2) 959409 1258527 Here is what I've tried:Assuming they were just in decimal degrees:(1) 10.0035 -12.59062(2) 9.59409 -12.58527 Assuming they were in d mm ss and that all the...

I was just going through the documentation for openlayers 3.11 and came across the Tiles() , Now it accepts a lot of properties(opacity, preload , map ... etc) , but the one i am interested in is extent , basically this allows me to set an extent of which tiles i would like to load, so an...

I am working wit a win10 64 bits 16mb of ram. I want to install Lyon on my computer and not get rid of 2.83. My 2.83 is a stand allone install. I thought I could install Lyon usion OSGEO 4w installer. Nevertheless, even though I tried several times, I can not get acces to the grass plugin. I can...

first of all, thanks for taking a look at my question. I creating home ranges for wolf packs utilizing the kde, isopleth, and cliprasterbypoly tools in GME. I have no problem running through these one at a time; however, I would like to get the process down to just three steps instead of three...

I am new to GIS and am testing a few workflows and needed some advice on them. We are dealing with about 30 million rows of user location data per day (lat, lon) in a Parquet file that can be converted to CSVs. We also have the counties/state shapefile for the US. I initially used ArcGIS to...