Combined the 2 files are around 1.5GB and add around 30GB to the install
size of nominatim. They also increase the install time by an hour or so.
+*NOTE:* you'll need to download the Wikipedia rankings before performing
+the initial import of the data if you want the rankings applied to the
+loaded data.
+
### UK postcodes
Nominatim can use postcodes from an external source to improve searches that involve a UK postcode. This data can be optionally downloaded:
Installing the newest version of Pyosmium
-----------------------------------------
-It is recommended to install Pyosmium via pip:
+It is recommended to install Pyosmium via pip. Run (as the same user who
+will later run the updates):
pip install --user osmium
./utils/update.php --import-osmosis-all
+(Note that even though the old name "import-osmosis-all" has been kept for compatibility reasons, Osmosis is not required to run this - it uses pyosmium behind the scenes.)
+
If you have imported multiple country extracts and want to keep them
up-to-date, have a look at the script in
[issue #60](https://github.com/openstreetmap/Nominatim/issues/60).