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    ArcMap 10.3 fails to export a clipped image from a mosaic dataset

    ArcMap 10.3 fails to export a clipped image form a mosaic dataset. I have the following mosaic dataset, I have used Image analysis to clip apart of it based on a polygon, but the issue here is that when I try to export it every time my workstation freezes and stops working The area of the...
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    Parsing XML file with hundred polygons using OpenLayers

    I'm using this script but It's not working. أكثر...
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    Some geometries don't work with ST_Union and gives a non-noded intersection

    I'm getting a lot of errors like this: GEOSUnaryUnion: TopologyException: found non-noded intersection between LINESTRING (147.254 -42.8705, 147.254 -42.8705) and LINESTRING (147.254 -42.8705, 147.254 -42.8705) at 147.25355728849621 -42.870521684000678I am calling...
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    cannot open shape file

    I'm trying to open this shape file with CartoDB or http://geojson.io, but I keep getting different kind of errors. I can open it with qgis, but then I tried exporting it to geojson, kml, esri shape, and other, and I always get lots of records but nothing on the map. I'd like to just convert it...
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    How to activate a layer by its name in PyQGIS?

    I'm writing a script that requires the attributes of different layers to work, and I would like to know how to call a layer that is not the currently active one and get its features. For example, I have three layers, named "Poles", "Lines" and "Loads", and I need to get the all the features of...
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    Converting a PostGIS raster back to vector

    Is it possible to convert a PostGIS raster back to a line? I'd like to generalize some vector data by converting it to raster and altering the cellsize to fix 'gaps' in the vector connectivity. Once I've reached a good raster cellsize, I'd like to convert that raster back to a vector line...
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    More Efficient Spatial join in Python without QGIS, ArcGIS, PostGIS, etc

    I'm attempting to do a spatial join much like the example here: Is there a python option to "join attributes by location"?. However, that approach seems really inefficient / slow. Even running this with a modest 250 points takes almost 2 minutes and it fails entirely on shapefiles with > 1,000...
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    pgr_drivingdistance gives me wrong results

    I am trying to create isochrones using OSM data for Indianapolis. I am trying to create an isochrone using pgrouting 2.0 with the following code. I got the code from the following tutorial First I create a topology select pgr_createTopology('network.publictransport', 0.0001, 'geom','id')...
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    Layer Tree QGIS

    I have a vector layer in qgis. I have added a bunch of rule for this layer. This is the QDockWidget for layer in QGIS main window So each of interstate, divided, secondary is different rule added using QgsRuleBasedRendererV2 All the rule have the check box where i can manually toggle...
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    Set missing pipe network data (age, size) based on nearest neighboring or connecting

    I have pipe network data (polylines) with missing age and size attributes. For pipe age, I have 10779 pipes with 1034 of them having NODATA values. For pipe size, I have 10779 pipes with 738 of them having NODATA values. What tool can I use to set the missing values based on the nearest...
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    How to change the style of the north arrow from “ESRI North 4” to “ESRI North 1”?

    I have a Python assignment where I have to write a script to change the style of the north arrow from “ESRI North 4” to “ESRI North 1”. I wrote the following code: import arcpy mxd = arcpy.mapping.MapDocument(r"F:/Lab9/Georgia.mxd") for elm in arcpy.mapping.ListLayoutElements(mxd...
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    Selecting features through ArcPy gives Assertion Error?

    I would like to achieve the following functionality through arcpy: Querying an existing baselayer on time and create a new layer Apply symbology from an existing layer and add the new layer to the current session's data frame on top of the basemap Have given my code below which gives...
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    Learn to Make Decisions Using Lidar Data and Geographic Information Systems

    "Making Spatial Decisions Using GIS and Lidar: A Workbook" focuses on using tools in Esri ArcGIS for Desktop to analyze and visualize lidar data. أكثر...
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    Geospatial's Big Data Challenge

    When discussing the challenges posed by big data, analysts speak of the four Vs--volume, variety, velocity and veracity. أكثر...
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    Analytics in the Cloud

    NGA's second pioneering step in the cloud came earlier this year when Lockheed Martin and Esri deployed the portal for Esri's ArcGIS software. أكثر...
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    Millennials muscle past boomers

    Esri map and data shows housing patterns and spending habits for millennials. أكثر...
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    Which neighborhoods have the most rat complaints?

    Esri map shows the amount of rat complaints in Chicago. أكثر...
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    Embed mp3 in infowindows of kmz file?

    Is there a way to embed audio files (mp3) into the infowindows of markers in a kmz so that the audio is available offline? I'd like the files to be in the kmz so the kmz can be downloaded as a whole package before entering the field and no streaming in the field would be required. We don't want...
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    How to solve this topology calculation equation system?

    Could you, please, help me to solve this equation system? A facet in a TIN (Triangular Irregular Network) can be described by the equation: (x,y)=b0+b1x+b2y If the three corner coordinates in a facet are as follows, what will b0, b1 and b2 become? x, y and z corner 1: 10, 20, 30 / x...
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    Which overlay method to choose? [on hold]

    Which overlay method would be prefered for the solution of this task: "You have a database over Paris: You have administrative Districts, represented as a polygon layer. You also have schools in Paris as a point theme layer where one attribute is the total number of students in each school...
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