It will start in the lowest zoom level for upscale_tiles, so that tiles in the next (higher) zoom levels can be created by upscaling the already creates tiles.Ī transparent tile is returned if no tile is found within the configured upscale_tiles or downscale_tiles range. It will start with the highest zoom level for downscale_tiles, so that tiles in the next (lower) zoom levels can be created by downscaling the already created tiles. Mapproxy-seed will seed each level independently for caches with upscale_tiles or downscale_tiles. You can use downscale_tiles to fill a cache for a source that only provides data for higher resolutions. It is therefore not recommended to use downscale_tiles values larger then one. A larger WMS request can quickly accumulate thousands of tiles required for downscaling. Downscaling from two levels below requires 16 tiles, three levels below requires 64, etc. Typically, a single tile can be downscaled from four tiles of the next zoom level. Note that the number of tiles growth exponentialy. The value configures by how many zoom levels MapProxy can search for a proper tile. MapProxy will scale down tiles from one or more zoom levels below (with higher resolutions) if you set downscale_tiles to 1 or higher. upscale_tiles allows you to provide responses for 10cm requests in all areas, allways returning the best available data. where you have an arial image cache of 20cm, with some areas also in 10cm resolution. This also works with partially seeded caches, eg. You can use upscale_tiles if you want to provide tiles or WMS responses in a higher resolution then your available cache. MapProxy will scale up tiles from one or more zoom levels above (with lower resolutions) if you set upscale_tiles to 1 or higher. MapProxy is able to create missing tiles by rescaling tiles from zoom levels below or above. 1 feature_list : - url : http : // example. gml format : text / xml subtype = gml / 3.2. shp format : application / octet - stream - url : http : // example. xml type : ISO19115 : 2003 format : application / xml data : - url : http : // example. xml type : INSPIRE format : application / xml - url : http : // example. org / name : HKU1234 value : Some value metadata : - url : http : // example. jpg width : 100 height : 100 format : image / jpeg identifier : - url : http : // example. Just Objects B.V.Layers : - name : md_layer title : WMS layer with extended capabilities sources : md : abstract : Some abstract keyword_list : - vocabulary : Name of the vocabulary keywords : - vocabulary : Name of another vocabulary keywords : - keywords : attribution : title : My attribution title url : http : // example. Also moving back from a new schema to the public schema works. The new schema needs to be created first. The SQL function postgis_schema_move() takes two string arguments: the old_schema and new_schema, the old (usually ‘public’) and new schema names. See the function postgis_schema_move() below.ģ public.postgis_schema_move(old_schema varchar(32),Ĥ new_schema varchar(32)) RETURNS void AS $$Ĩ FOR row IN SELECT tablename FROM pg_tablesĩ WHERE schemaname = old_schema and tablename != 'spatial_ref_sys'ġ2 EXECUTE 'ALTER TABLE ' || quote_ident(old_schema) || '.'ġ5 EXECUTE 'UPDATE public.geometry_columnsġ6 SET f_table_schema = ' || quote_literal(new_schema) ||ġ7 ' WHERE f_table_schema = ' || quote_literal(old_schema) ||'ġ8 AND f_table_name = ' || quote_literal(row.tablename) || ' ' Ģ2 23- Example: Move from public to schema appĢ4SELECT public.postgis_schema_move('public', 'app')
#MAPPROXY POSTGRES UPDATE#
On the web, I constructed an SQL function that would move my tables from the _public S_chema to any other Schema and update the PostGIS metatables (and leave these in the _public _Schema). Which has tables in PostgreSQL 8.2 in the public schema. So I recommend always to use Schema’s.īut what if your tables are already in the public schema? This was the case in some of my older projects like GeoSkating
This is problematic to restore on another system or higher PostgreSQL/PostGIS version. When using the default _public _schema a dump would also include PostGIS functions and metatables.
) and restore these dumps in another database, even on another system. One main reason, at least for me, is that PostgreSQL Schema’s allow me to make data dumps of the Schema (via pg_dump Instead of the default public schema where PostGIS and its meta-tables ( geometry_columns and spatial_ref_sys) are installed one can use an explicit schema. Update 4 june 2015: _tested with PostgreSQL 9.3.4 and PostGIS v2.1: all ok!! _ Update : not yet tested with PostGIS v2.0 and up, so beware (or let me know if that works)!
, also with function to move single table.
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