README.md

Eurocontrol Atlas TopoJSON

This repository provides a convenient mechanism for generating TopoJSON files for Eurocontrol region

Installing via Homebrew (OS X)

Before you can make any TopoJSON files, you’ll need to install Node.js and GDAL. Here’s how to do that using Homebrew on Mac OS X:

brew install node gdal

Then, clone this repository and install its dependencies:

git clone https://github.com/euctrl-pru/eurocontrol-atlas.git
cd eurocontrol-atlas
npm install

Make Targets

Once you have everything installed, you can make various targets defined in the Makefile.

make help

FABs

Each FAB has been assigned a unique ID, see data/fab-id-name.csv. This is the file that can be used for example in D3 to associate the id to the name.

Getting all relevant flight levels (FLs) for a set of FIRs

Given all the FIRs for Eurocontrol as from euctrl target, the following jq filter will return the list of unique FLs, i.e. the slices to consider when merging the relevant set of FIRs:

$ jq "[.objects.firs.geometries| .[].properties | .minfl , .maxfl] | unique" firs.json
[
  0,
  195,
  245,
  275,
  285,
  999
]

Select all the FIRs whose minfl is equal to 285:

$ jq ".objects.firs.geometries| .[].properties | select(.minfl|  . == 285)" firs.json
{
  "id": "EFINUIR",
  "icao": "EF",
  "name": "FINLAND UIR",
  "minfl": 285,
  "maxfl": 999
}
{
  "id": "LYBAUIR",
  "icao": "LY",
  "name": "BEOGRAD UIR",
  "minfl": 285,
  "maxfl": 999
}

The FIRs that exist at FL245 are (these are the ones to be merged when considering State or Fab aggregation):

$ jq ".objects.firs.geometries| .[].properties | select(. | .minfl <= 245 and .maxfl > 245) | .id" firs.json
"LJLAFIR"
"EISNUIR"
"LFFFUIR"
"LZBBFIR"
"LHCCFIR"
"LTBBFIR"
"EETTFIR"
"ENORFIR"
"EPWWFIR"
"LPPOFIR"
"UDDDFIR"
"EHAAFIR"
"EKDKFIR"
"LIRRUIR"
"UKLVFIR"
"LOVVFIR"
"EDVVUIR"
"LUUUFIR"
"LDZOFIR"
"LIMMUIR"
"LAAAFIR"
"UKFVFIR"
"EBURUIR"
"EFINFIR"
"LYBAFIR"
"ESAAFIR"
"EGGXFIR"
"ENOBFIR"
"EGPXUIR"
"LECBUIR"
"LMMMUIR"
"LCCCUIR"
"LTAAFIR"
"LPPCFIR"
"GCCCUIR"
"LBSRFIR"
"EGTTUIR"
"LWSSFIR"
"UGGGUIR"
"LKAAFIR"
"LQSBUIR"
"LSASUIR"
"LECMUIR"
"LRBBFIR"
"UKDVFIR"
"LIBBUIR"
"EYVLUIR"
"EVRRFIR"
"UKBVFIR"
"EDUUUIR"
"LGGGUIR"
"UKOVFIR"