Batch Geocoding with R and Google maps

April 24, 2018

Batch Geocoding with R and Google maps

“(…)

There is a usage limit on the geocoding service for free users of 2,500 addresses per IP address per day. This hard limit cannot be overcome without employing new a IP address, or paying for a business account. To ease the pain of starting an R process every 2,500 addresses / day, I’ve built the a script that geocodes addresses up the the API query limit every day with a few handy features:

  • Once it hits the geocoding limit, it patiently waits for Google’s servers to let it proceed.
  • The script pings Google once per hour during the down time to start geocoding again as soon as possible.
  • A temporary file containing the current data state is maintained during the process. Should the script be interrupted, it will start again from the place it left off once any problems with the data /connection has been rectified.

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OSM Truck QA Map – Fehlende Höhenbeschränkung in OpenStreetMap

March 24, 2018

OSM Truck QA Map – Fehlende Höhenbeschränkung in OpenStreetMap

 

StreetComplete

March 24, 2018

StreetComplete is an Android app which finds wrong, incomplete or extendable data in the user’s vicinity and provides them the tools to complete these easily and directly on site without having to use another editor.
Data issues are presented to the user as markers on a map (like with Mapdust for example). They can be solved by filling out a simple form to complete/correct the information. The user’s answers are then processed and directly uploaded into the OSM database categorised by quest type in the name of the user’s OSM account. Since the app is meant to be used while out and about, it works offline and otherwise aims to be economic with data usage.

Tutorial: how to fully identify Invalid Geometries

March 23, 2018

Tutorial: how to fully identify Invalid Geometries

Downloading the sample dataset

In this tutorial we’ll use am Administrative Shapefile made available from ISTAT , the Italian Census Agency; more precisely we’ll use the Local Councils (2011 census) you can download from here

Raster data

March 13, 2018

Raster data

Raster data are turned into tiles

Hillshade

March 13, 2018

Hillshade

MapTiler -GeoEditor

March 13, 2018

Map tiler – GeoEditor

GeoEditor for web is a simple online app for collaborative creating and editing of basic geographical data – just draw points, polygons and lines on top of the maps directly in a web browser.

 

 

Arkansas GIS Office

March 13, 2018

Arkansas GIS Office

OpenMapTiles

March 13, 2018

Manually building a tile server (16.04.2 LTS)

March 13, 2018

Manually building a tile server (16.04.2 LTS)

This page describes how to install, setup and configure all the necessary software to operate your own tile server. The step-by-step instructions are written for Ubuntu Linux 16.04.2 LTS (Xenial Xerus).