Skip to content

Metadata.md

Latest commit

 

History

History
14 lines (11 loc) · 1.69 KB

Metadata.md

File metadata and controls

14 lines (11 loc) · 1.69 KB

Metadata & Data Simplification

This file provides information for the Zaatari_refugee_camp_water.geojson and Zaatari_refugee_camp_water_simplified.geojson files in this folder.

The data in Zaatari_refugee_camp_water.geojson were downloaded from OpenStreetMap using the Overpass Turbo query builder searching for nodes with the following query: amenity=water_point OR amenity=drinking_water. The data were collected on 29, October 2020. Information about the creation and structure of the data can be found on the OSM wiki page for refugee camp mapping.

Data Simplification

The following steps were used to simplify the data and create the Zaatari_refugee_camp_water_simplified.geojson file.

  1. Upload data to a converter (I used http://geojson.io) and save the data as a .csv file.
  2. Open the .csv in the tabular editing program of your choice (I used Excel).
  3. Remove node/ from every record under the @id column using a find and replace.
  4. Since I only want to show the water points and, perhaps, symbolize them by type I removed the following columns: amenity, district, source, and street.
  5. Simplify coordinates to the sixth decimal place. I did this by selecting all coordinates, formatting the cells as a number, and specifying the number of decimal places to be kept.
  6. Re-convert the .csv to GeoJSON using an online converter: I used https://odileeds.github.io/CSV2GeoJSON/. I took the extra step of choosing to not keep the additional 'lat/lon' properties inserted by the converter since they would have been redundant.