Mapnik renders tiles without details

[Michael Handerek]

Hi,

I setup a PostGIS + Mapnik + mod_tile server to serve my own tiles. It
is already running :) but mapnik only renders boundaries. I have read on
mapnik wiki the troubleshooting that covers my problem.

 "If the generated tiles or image show coastlines, but lack streets,
street names, cities, and other features, please verify that the
database user can indeed login. The scripts and mapnik may quietly fail
to read the data and thus render with coastlines, but no other data.
Another cause is building mapnik without postgis support."

The data ist definitive taken from Postgres, checked by tailing the
access logs.
What does it mean to build mapnik with postgis support? This point seems
not to be mentioned explicit in the install howto on the mapnik site.

Furthermore generated tiles on higer zoomlevels are squishy.

Does anybody already fixed issues like that?


Regards, Michael


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[Jon Burgess-2]

On Sat, 2009-09-26 at 10:43 +0200, Michael Handerek wrote:

> Hi,
>
> I setup a PostGIS + Mapnik + mod_tile server to serve my own tiles. It
> is already running :) but mapnik only renders boundaries. I have read on
> mapnik wiki the troubleshooting that covers my problem.
>
>  "If the generated tiles or image show coastlines, but lack streets,
> street names, cities, and other features, please verify that the
> database user can indeed login. The scripts and mapnik may quietly fail
> to read the data and thus render with coastlines, but no other data.
> Another cause is building mapnik without postgis support."
>
> The data ist definitive taken from Postgres, checked by tailing the
> access logs.
> What does it mean to build mapnik with postgis support? This point seems
> not to be mentioned explicit in the install howto on the mapnik site.

If mapnik is connecting with postgresql then you have the postgis.input
plugin.

What data have you imported into postgresql?

If using OSM with osm2pgsql then make sure you build and install the
latest from SVN. See
http://wiki.openstreetmap.org/index.php/Mapnik#osm2pgsql


> Furthermore generated tiles on higer zoomlevels are squishy.

What do you mean by this? Perhaps you are wanting to change the
projection?

> Does anybody already fixed issues like that?
>
>
> Regards, Michael
>
>
> _______________________________________________
> Mapnik-users mailing list
> Mapnik-users@...
> https://lists.berlios.de/mailman/listinfo/mapnik-users

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[Michael Handerek]

On Sat, 2009-09-26 at 11:41 +0100, Jon Burgess wrote:

> On Sat, 2009-09-26 at 10:43 +0200, Michael Handerek wrote:
> > Hi,
> >
> > I setup a PostGIS + Mapnik + mod_tile server to serve my own tiles. It
> > is already running :) but mapnik only renders boundaries. I have read on
> > mapnik wiki the troubleshooting that covers my problem.
> >
> >  "If the generated tiles or image show coastlines, but lack streets,
> > street names, cities, and other features, please verify that the
> > database user can indeed login. The scripts and mapnik may quietly fail
> > to read the data and thus render with coastlines, but no other data.
> > Another cause is building mapnik without postgis support."
> >
> > The data ist definitive taken from Postgres, checked by tailing the
> > access logs.
> > What does it mean to build mapnik with postgis support? This point seems
> > not to be mentioned explicit in the install howto on the mapnik site.
>
> If mapnik is connecting with postgresql then you have the postgis.input
> plugin.
>
> What data have you imported into postgresql?

I imported a complete planet dump via osmosis. Should I consider
something importing data for mapnik via osmosis?

>
> If using OSM with osm2pgsql then make sure you build and install the
> latest from SVN. See
> http://wiki.openstreetmap.org/index.php/Mapnik#osm2pgsql
>
>
> > Furthermore generated tiles on higer zoomlevels are squishy.
>
> What do you mean by this? Perhaps you are wanting to change the
> projection?

One more issue I encountered. If I change the bgcolor of the map in my
osm.xml, this doesn't take effect on new rendered tiles. Changing the
projection too.

>
> > Does anybody already fixed issues like that?
> >
> >
> > Regards, Michael
> >
> >
> > _______________________________________________
> > Mapnik-users mailing list
> > Mapnik-users@...
> > https://lists.berlios.de/mailman/listinfo/mapnik-users

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[Florian Lohoff]

On Sat, Sep 26, 2009 at 09:54:09PM +0200, Michael Handerek wrote:
> > If mapnik is connecting with postgresql then you have the postgis.input
> > plugin.
> >
> > What data have you imported into postgresql?
>
> I imported a complete planet dump via osmosis. Should I consider
> something importing data for mapnik via osmosis?

If you dont use some magic views to feed data to mapnik and/or use
the default osm.xml you should import the data with osm2pgsql not osmosis.

Flo
--
Florian Lohoff                                         flo@...
"Es ist ein grobes Missverständnis und eine Fehlwahrnehmung, dem Staat
im Internet Zensur- und Überwachungsabsichten zu unterstellen."
- - Bundesminister Dr. Wolfgang Schäuble -- 10. Juli in Berlin


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[Jon Burgess-2]

On Sat, 2009-09-26 at 21:54 +0200, Michael Handerek wrote:

> On Sat, 2009-09-26 at 11:41 +0100, Jon Burgess wrote:
> > On Sat, 2009-09-26 at 10:43 +0200, Michael Handerek wrote:
> > > Hi,
> > >
> > > I setup a PostGIS + Mapnik + mod_tile server to serve my own tiles. It
> > > is already running :) but mapnik only renders boundaries. I have read on
> > > mapnik wiki the troubleshooting that covers my problem.
> > >
> > >  "If the generated tiles or image show coastlines, but lack streets,
> > > street names, cities, and other features, please verify that the
> > > database user can indeed login. The scripts and mapnik may quietly fail
> > > to read the data and thus render with coastlines, but no other data.
> > > Another cause is building mapnik without postgis support."
> > >
> > > The data ist definitive taken from Postgres, checked by tailing the
> > > access logs.
> > > What does it mean to build mapnik with postgis support? This point seems
> > > not to be mentioned explicit in the install howto on the mapnik site.
> >
> > If mapnik is connecting with postgresql then you have the postgis.input
> > plugin.
> >
> > What data have you imported into postgresql?
>
> I imported a complete planet dump via osmosis. Should I consider
> something importing data for mapnik via osmosis?

If you did not use osm2pgsql for part of the import then you don't have
the data loaded in the correct way. Osmosis can load the OSM data into
postgres but not in the correct format for Mapnik to use.
See: http://wiki.openstreetmap.org/index.php/Mapnik

> >
> > If using OSM with osm2pgsql then make sure you build and install the
> > latest from SVN. See
> > http://wiki.openstreetmap.org/index.php/Mapnik#osm2pgsql
> >
> >
> > > Furthermore generated tiles on higer zoomlevels are squishy.
> >
> > What do you mean by this? Perhaps you are wanting to change the
> > projection?
>
>
> One more issue I encountered. If I change the bgcolor of the map in my
> osm.xml, this doesn't take effect on new rendered tiles. Changing the
> projection too.

The bgcolor only effects the blue sea colour. The land colour rendered
by the style applied to the coastline shapefile polygons.

The mod_tile code lays out the tiles assuming the "900913" projection as
used by the OSM tiles:
http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames

If you change to a different projection then things will probably break.

> >
> > > Does anybody already fixed issues like that?
> > >
> > >
> > > Regards, Michael
> > >
> > >
> > > _______________________________________________
> > > Mapnik-users mailing list
> > > Mapnik-users@...
> > > https://lists.berlios.de/mailman/listinfo/mapnik-users
>
>
> _______________________________________________
> Mapnik-users mailing list
> Mapnik-users@...
> https://lists.berlios.de/mailman/listinfo/mapnik-users

_______________________________________________
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Mapnik-users@...
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[Michael Handerek]

On Sat, 2009-09-26 at 21:27 +0100, Jon Burgess wrote:

> On Sat, 2009-09-26 at 21:54 +0200, Michael Handerek wrote:
> > On Sat, 2009-09-26 at 11:41 +0100, Jon Burgess wrote:
> > > On Sat, 2009-09-26 at 10:43 +0200, Michael Handerek wrote:
> > > > Hi,
> > > >
> > > > I setup a PostGIS + Mapnik + mod_tile server to serve my own tiles. It
> > > > is already running :) but mapnik only renders boundaries. I have read on
> > > > mapnik wiki the troubleshooting that covers my problem.
> > > >
> > > >  "If the generated tiles or image show coastlines, but lack streets,
> > > > street names, cities, and other features, please verify that the
> > > > database user can indeed login. The scripts and mapnik may quietly fail
> > > > to read the data and thus render with coastlines, but no other data.
> > > > Another cause is building mapnik without postgis support."
> > > >
> > > > The data ist definitive taken from Postgres, checked by tailing the
> > > > access logs.
> > > > What does it mean to build mapnik with postgis support? This point seems
> > > > not to be mentioned explicit in the install howto on the mapnik site.
> > >
> > > If mapnik is connecting with postgresql then you have the postgis.input
> > > plugin.
> > >
> > > What data have you imported into postgresql?
> >
> > I imported a complete planet dump via osmosis. Should I consider
> > something importing data for mapnik via osmosis?
>
> If you did not use osm2pgsql for part of the import then you don't have
> the data loaded in the correct way. Osmosis can load the OSM data into
> postgres but not in the correct format for Mapnik to use.
> See: http://wiki.openstreetmap.org/index.php/Mapnik
>
>
> > >
> > > If using OSM with osm2pgsql then make sure you build and install the
> > > latest from SVN. See
> > > http://wiki.openstreetmap.org/index.php/Mapnik#osm2pgsql

Great thx. Oms2pgsql did it!
Does anybody know how much space a planet dump will take with osm2pgsql?

> > >
> > >
> > > > Furthermore generated tiles on higer zoomlevels are squishy.
> > >
> > > What do you mean by this? Perhaps you are wanting to change the
> > > projection?
> >
> >
> > One more issue I encountered. If I change the bgcolor of the map in my
> > osm.xml, this doesn't take effect on new rendered tiles. Changing the
> > projection too.
>
> The bgcolor only effects the blue sea colour. The land colour rendered
> by the style applied to the coastline shapefile polygons.
>
> The mod_tile code lays out the tiles assuming the "900913" projection as
> used by the OSM tiles:
> http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
>
> If you change to a different projection then things will probably break.
>
> > >
> > > > Does anybody already fixed issues like that?
> > > >
> > > >
> > > > Regards, Michael
> > > >
> > > >
> > > > _______________________________________________
> > > > Mapnik-users mailing list
> > > > Mapnik-users@...
> > > > https://lists.berlios.de/mailman/listinfo/mapnik-users
> >
> >
> > _______________________________________________
> > Mapnik-users mailing list
> > Mapnik-users@...
> > https://lists.berlios.de/mailman/listinfo/mapnik-users

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[Frederik Ramm]

Hi,

Michael Handerek wrote:
> Does anybody know how much space a planet dump will take with osm2pgsql?

About 75 GB.

Bye
Frederik
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