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What are some of the good resources (books, tutorials) to learn image processing with Python for a beginner. Thanks أكثر...

I've been asked to do some research where I compare survey data to some population numbers. Unfortunately, I think it is likely the case that people who live in smaller cities that are close to large cities may have supplied the name of the larger city. I currently have city-level population...

I've imported a number of files that used to be in KML format into geoserver after putting everything into a PostGIS table. Now I would like to use CSS style information that was associated with the original KML files, but Geoserver says the layers cannot be rendered because they are missing...

I am looking for some information that I would like to look at the house basements around the USA ? Does anyone know where to find them ? أكثر...

I have a map of my state with county boundaries. What settings should I use to color the counties based on their area but only if its area falls in the bottom or top 25% of county area? For example, if I have 100 counties, sort them by area then color the top 25 (25%) and bottom 25 (25%). I...

I have a locally hosted CartoDB instance and have been happily playing with it for some time and enjoying all sorts of beautiful visualisations. There is some data ingested and I'd like to create a local website that displays a map with the data stored in CartoDB. I'm playing with a...

I´m trying to find out more on the possibilities with GeoClouding and PostGIS. I was experimenting with AWS RDS feature with an Free Tier account, and now I´ve been charged a large amount of money...holy ****. I might misunderstood something here. I´ve been charged for theese RDS-sevices (which...

Measuring the sizes of chopped-down trees from their stumps is what D.C.'s Urban Forestry Administration can now do by using Esri technology. أكثر...

Esri's new mobile app, Field Notes أكثر...

I have field with numbers in it (field type: double, number format: numberic) and I need to create a new field and put text in front of the numbers. I know that I need to add a new string field, but what is the proper expression to put into field calculator? For example, if my number is 123, I...

During script development it's useful to use the QGIS python console to test the same script on different layers. Currently I've been hardcoding layer strings and just swapping out but it isn't particularly refined! Ideally I want to prompt keyboard input or throw up a mini gui combo box. Can...

Perhaps this isn't really specifically a GIS question, but I've been using ArcMap to measure distances from the access points of green spaces in Bristol to postcode centroids and would like to use these distances to calculate the percentage of the population of each ward and of the city as a...

I have a point layer in ArcGIS that has a field named "Population" that stores an integer value for every point in the layer. I want to create N points in the exact place of the feature that has N as value in the population "field". I mean, if a point has in the population field 16, I need to...

This question already has an answer here: explode features based on numerical field 1 answer I have a point layer in QGIS that has a field named "Amount" that stores an integer value for every point in...

Perhaps this isn't really specifically a GIS question, but I've been using ArcMap to measure distances from the access points of green spaces in Bristol to postcode centroids and would like to use these distances to calculate the percentage of the population of each ward and of the city as a...

In QGIS - I have an irregularly shaped raster - I wish to clip an irregular area out of it (call it raster A) with that area set to null. I masked the area (vector polygon) I want to remove and used warp > reproject to create the second raster (lets call it B) that effectively contains the...

I'm using cartodb's static maps API to create a hi-def printable map. The map is placed on top of a basemap generated in Mapbox studio. Looks pretty good but I have an issue that prevents me to industrialize the process :When using the anonymous endpoint with a bounding box...

I have Navtech data which provides center-lines with geometric data of the roads. The most important data for me is that it gives me the width of the road as well as the number of lanes for most of the segments. I am wondering if there is a tool that helps to display the number of the travel...

What COTS software is available to do mobile data collection, with GPS positioning. Map display not required. I'm looking across the board (platform wise). I'm already aware of... RhinoSpect ArcPad ArcGIS Mobile Field Assets Retriever Geopaparazzi EpiCollect Trimble Field Inspector iGIS Any...

Learn how to map US County demographic data in R in this article by Ari Lamstein. The post Mapping County Demographic Data in R appeared first on GIS Lounge. أكثر...