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Using dojo/promise/all I'm attempting to populate an infoTemplate with results from a queryTask which runs later in the script. Our app returns an XY value from a geocoded address search and queries that value to see if it falls within a series of polygonal features. If it does it should pass...

"Dataset xxx does not exist or is not supported" using Table to Domain in Python I have a directory of hundreds of *.csv files, containing code/description pairs for geodatabase domains. I'm trying to automate the creation of these domains using Python. If I manually run the Table to Domain...

Can any body teach me how to resolve this GeoNode problem? I tried following Geonode's documentation on installing it in development mode which was successful however when I tried changing its default configuration form using sqlite3 to postgresql the error below happens. Any help is greatly...

The afternoon of the first day of Eye on Earth (see previous post for an opening ceremony and the morning*sessions) had multiple tracks. I selected to attend Addressing policy making demand for data; dialogue between decision makers and providers The speakers were asked to address four points...

Via Keir Clarke's Maps Mania I saw the latest voronoi designed map this morning. Made by Guus Hoekman, the map uses voronoi polygons to subdivide the world such that each polygon represents a spatial partition that contains one football club. It's a neat coded solution for the novice...

Has anybody ran into in issue where Python field calculations and/or scripts won't properly query Null (None) values? Examples follow: codeblock: def test(field): if field is None: return "value is null" else: return field expression: test(!field!) The...

I'm using grass 7.0.1 and my goal is to create a NDVI map with a sharper resolution from a landsat 8 image. I did the transformation from 16bit to 8bit, and afterwards i used the i.pansharpen module. In the final step i tried the i.vi module. The result was a ndvi map with the original...

I have very large rasters (7000x3500 cells) in postgis (2.1.3) postgres (9.3.4) that I want to pull down via psycogp2 and create numpy arrays and ultimately a geotiff. Initially I found I had to use ST_AsBinary(rast) instead of St_AsGDALRaster(rast) in order to prevent python from running...

I'm new to openLayers. I have parcel data stored in a geojson file, and it's pretty huge - there are about 170,000 records. I would load the data as a WMS, but I want the features to highlight in a different color on mouseover. I'm following this example...

This video shows how to access Orthophoto imagery specific for Vancouver Open Data. However, I should mention a lot of data vendors have similar practices, including sources like GeoBase. Vancouver Open Data is unique from most data providers, where it lets you one-click download the whole...

Apple is not giving up on its Maps. Although it goes slowly, step by step the company adds additional features. Last month Apple released much-needed public transit directions together with iOS9 – new operating system for iPhones and iPads. Initially transit info was available only in...

I downloaded primary, secondary, and local road data in Montana via USDA; however, place names (city/town etc) are not included in the data sets. I'm just wondering if there is a method to reverse geocode placenames or if there is road data by state that includes placenames? I looked around for...

I was hoping someone could help explain a behaviour that I noticed while working with downloaded MODIS 17A3 .hdf files from here: ftp://ftp.ntsg.umt.edu/pub/MODIS/NTSG_Products/MOD17/MOD17A3/ The readme.txt file from the link above suggests a scale factor needs to be applied to the digital...

Is there any easy way to render all roads and paths with an equal width in Mapnik? In the rendition below, all lines have the same line width, but since many of the bigger roads have many lanes or parallel roads that are (nearly) overlapping, they seem fatter. My source for Mapnik is a...

I am trying to find a file with income data for every census tract. But on the American FactFinder/Census websites, all I can find is data for each individual state or county. But I want all census tracts in all 50 states. Does this mean I have to download all 50 files and combine them...

By Aileen Buckley, Esri Cartographer To use an Excel table in ArcGIS, it should first be formatted correctly so that ArcGIS can read the table without errors. This blog entry contains links to a table with guidelines for how to format your Excel table, as well as a couple of other useful...

Eurosurveillance, Volume 20, Issue 39, 01 October 2015 By CM Smith, SC Le Comber, H Fry, M Bull, S Leach, and AC Hayward “Investigations of infectious disease outbreaks are conventionally framed in terms of person, time and place. Although geographic information systems have increased the...

Im working on ENVI 5.2, with Tasseled cap (TCT). The resulted output from this process is in ENVI Standard format, which shows error when used as an input in Confusion Matrix... For this i want its output in ENVI Classification format. I also tried this by using "Edit ENVI Header" tool... This...

How to Move points according to distance and azimuth ? أكثر...

Using Qgis 2.8 Trying to label a line/road layer, pull up the dialogue box, everything in the dialogue box seems to work except the labeling doesn't appear on the map. All of the labels don't work for any of the layers, which lead me to believe its something to do with QGIS settings. The...