add links to official secondary importance file

diff --git a/docs/admin/Import.md b/docs/admin/Import.md
index 5e9d6d7fcf1790ef89359d666a9f89983b343a69..38cd0b740ff4ea37f90098f43dd8f461d590b733 100644 (file)
--- a/docs/admin/Import.md
+++ b/docs/admin/Import.md
@@ -75,14 +75,17 @@ This data is available as a binary download. Put it into your project directory:
 
     cd $PROJECT_DIR
     wget https://nominatim.org/data/wikimedia-importance.sql.gz
 
     cd $PROJECT_DIR
     wget https://nominatim.org/data/wikimedia-importance.sql.gz

+    wget -O secondary_importance.sql.gz https://nominatim.org/data/wikimedia-secondary-importance.sql.gz

 
 

-The file is about 400MB and adds around 4GB to the Nominatim database.
+The files are about 400MB and add around 4GB to the Nominatim database. For
+more information about importance,
+see [Importance Customization](../customize/Importance.md).

 
 !!! tip
     If you forgot to download the wikipedia rankings, then you can
     also add importances after the import. Download the SQL files, then
 
 !!! tip
     If you forgot to download the wikipedia rankings, then you can
     also add importances after the import. Download the SQL files, then

-    run `nominatim refresh --wiki-data --importance`. Updating
-    importances for a planet will take a couple of hours.
+    run `nominatim refresh --wiki-data --secondary-importance --importance`.
+    Updating importances for a planet will take a couple of hours.

 
 ### External postcodes
 
 
 ### External postcodes
 

diff --git a/docs/customize/Importance.md b/docs/customize/Importance.md
index 5c271ed81fc46f5a2236ef158726f632353e3d9d..f192d265ed5765bc57176bf1c8396a568f650170 100644 (file)
--- a/docs/customize/Importance.md
+++ b/docs/customize/Importance.md
@@ -12,7 +12,7 @@ customize them.
 The main value for importance is derived from page ranking values for Wikipedia
 pages for a place. For places that do not have their own
 Wikipedia page, a formula is used that derives a static importance from the
 The main value for importance is derived from page ranking values for Wikipedia
 pages for a place. For places that do not have their own
 Wikipedia page, a formula is used that derives a static importance from the

-places [search rank](../customize/Ranking.md#search-rank).
+place's [search rank](../customize/Ranking.md#search-rank).

 
 In a second step, a secondary importance value is added which is meant to
 represent how well-known the general area is where the place is located. It
 
 In a second step, a secondary importance value is added which is meant to
 represent how well-known the general area is where the place is located. It


@@ -21,7 +21,13 @@ importance values.
 
 nominatim.org has preprocessed importance tables for the
 [primary Wikipedia rankings](https://nominatim.org/data/wikimedia-importance.sql.gz)
 
 nominatim.org has preprocessed importance tables for the
 [primary Wikipedia rankings](https://nominatim.org/data/wikimedia-importance.sql.gz)

-and for a secondary importance based on the number of tile views on openstreetmap.org.
+and for [secondary importance](https://nominatim.org/data/wikimedia-secondary-importance.sql.gz)
+based on Wikipedia importance of the administrative areas.
+
+The source code for creating these files is avaible in the Github projects
+[osm-search/wikipedia-wikidata](https://github.com/osm-search/wikipedia-wikidata)
+and
+[osm-search/secondary-importance](https://github.com/osm-search/secondary-importance).

 
 ### Customizing secondary importance
 
 
 ### Customizing secondary importance
 


@@ -41,8 +47,8 @@ table will be ignored. You must furthermore create an index as follows:
 CREATE INDEX ON secondary_importance USING gist(ST_ConvexHull(gist))
 ```
 
 CREATE INDEX ON secondary_importance USING gist(ST_ConvexHull(gist))
 ```
 

-The following raster2pgsql command will create a table that conforms to
-the requirements:
+The following raster2pgsql command will create a table from a tiff file
+that conforms to the requirements:

 
 ```
 raster2pgsql -I -C -Y -d -t 128x128 input.tiff public.secondary_importance
 
 ```
 raster2pgsql -I -C -Y -d -t 128x128 input.tiff public.secondary_importance