Merge pull request #742 from lonvia/compare-normalized

[nominatim.git] / docs / Import_and_update.md

diff --git a/docs/Import_and_update.md b/docs/Import_and_update.md
index cd9ff697193fd7e9f8c49703d0df837469ed5614..266a5d8b9e5a00dbb499da45cd3aad8e17b42541 100644 (file)
--- a/docs/Import_and_update.md
+++ b/docs/Import_and_update.md
@@ -80,10 +80,10 @@ Nominatim is able to use the official TIGER address set to complement the
 OSM housenumber data in the US. You can add TIGER data to your own Nominatim
 instance by following these steps:
 
-  1. Install the GDAL library and python bindings
+  1. Install the GDAL library and python bindings and the unzip tool
 
-       * Ubuntu: `sudo apt-get install python-gdal`
-       * CentOS: `sudo yum install gdal-python`
+       * Ubuntu: `sudo apt-get install python-gdal unzip`
+       * CentOS: `sudo yum install gdal-python unzip`
 
   2. Get the TIGER 2015 data. You will need the EDGES files
      (3,234 zip files, 11GB total). Choose one of the two sources:
@@ -118,21 +118,24 @@ Updates
 =======
 
 There are many different possibilities to update your Nominatim database.
-The following section describes how to keep it up-to-date with osmosis.
+The following section describes how to keep it up-to-date with Pyosmium.
 For a list of other methods see the output of `./utils/update.php --help`.
 
-Installing the newest version of osmosis
-----------------------------------------
+Installing the newest version of Pyosmium
+-----------------------------------------
+
+It is recommended to install Pyosmium via pip:
+
+    pip install --user osmium
 
-The version of osmosis that comes with your distribution should be sufficient
-in most cases.
+Nominatim needs a tool called `pyosmium-get-updates` that comes with
+Pyosmium. You need to tell Nominatim where to find it. Add the
+following line to your `settings/local.php`:
 
-If you want to install it by hand, get the latest version from the
-[Osmosis website](http://wiki.openstreetmap.org/wiki/Osmosis). Then
-tell Nominatim to use this version by adding the following line to
-your `settings/local.php`:
+    @define('CONST_Pyosmium_Binary', '/home/user/.local/bin/pyosmium-get-changes');
 
-    @define('CONST_Osmosis_Binary', '/usr/local/bin/osmosis');
+The path above is fine if you used the `--user` parameter with pip.
+Replace `user` with your user name.
 
 Setting up the update process
 -----------------------------
@@ -146,35 +149,27 @@ diffs for Ireland from geofabrik add the following:
 
     // base URL of the replication service
     @define('CONST_Replication_Url', 'http://download.geofabrik.de/europe/ireland-and-northern-ireland-updates');
-    // Process each update separately, osmosis cannot merge multiple updates
-    @define('CONST_Replication_MaxInterval', '40000');
     // How often upstream publishes diffs
     @define('CONST_Replication_Update_Interval', '86400');
     // How long to sleep if no update found yet
     @define('CONST_Replication_Recheck_Interval', '900');
 
+To set up the update process now run the following command:
 
-Delete any existing `settings/configuration.txt`, then run the following command
-to create the osmosis configuration files:
-
-    ./utils/setup.php --osmosis-init
-
-Enabling hierarchical updates
------------------------------
+    ./utils/update --init-updates
 
-When a place is updated in the database, all places that contain this place
-in their address need to be updated as well. These hierarchical updates are
-disabled by default because they slow down the initial import.
-Enable them with the following command:
+It outputs the date where updates will start. Recheck that this date is
+what you expect.
 
-    ./utils/setup.php --create-functions --enable-diff-updates
+The --init-updates command needs to be rerun whenever the replication service
+is changed.
 
 Updating Nominatim
 ------------------
 
 The following command will keep your database constantly up to date:
 
-    ./utils/update.php --import-osmosis-all --no-npi
+    ./utils/update.php --import-osmosis-all
 
 If you have imported multiple country extracts and want to keep them
 up-to-date, have a look at the script in