[Live-demo] Postgis questions
Angelos Tzotsos
gcpp.kalxas at gmail.com
Sun Jan 31 08:51:43 PST 2016
Thanks Regina,
This has just landed in our git repo:
https://github.com/OSGeo/OSGeoLive/pull/62/files
Thanks Brian for the pull request.
Pieter, you will be able to use this feature in our next release (beta1)
or in the following nightly builds.
Best,
Angelos
On 01/23/2016 10:36 PM, Regina Obe wrote:
> That is a way of doing it too, but for PostgreSQL 9.4+, I would highly suggest using the
>
>
>
> ALTER SYSTEM approach.
>
>
>
> ALTER SYSTEM settings get kept in a file called postgresql.auto.conf and override whatever same settings are in postgresql.conf
>
>
>
> The real benefit I've found with ALTER SYSTEM is that it's easy to keep track of what settings you changed from default since you can just look at the
>
> postgresql.auto.conf and see.
>
>
>
> The other benefit is when upgrade to PostgreSQL 9.5 on another server, I just copy this file to my 9.5 instance without worrying about all the other additional things that got added to postgresql.conf in 9.5.
>
>
>
> They say you should never edit the postgresql.auto.conf directly, but I tend to get lazy and just directly type into it and then restart my database service.
>
> >From what I've observed, It's perfectly okay to edit the file directly (as long as you don't expect comments to be kept) and restart your service, before making any ALTER SYSTEM calls. Since postgresql loads this file on each startup, so any ALTER SYSTEM you do after, will start with what got loaded and then write back all your custom settings back to the file.
>
>
>
> Actually I think it might reload the file on each SELECT pg_reload_conf(); call so might actually be safe to just call that too instead of restart the service.
>
>
>
> Hope that helps,
>
> Regina
>
>
>
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>
> From: Live-demo [mailto:live-demo-bounces at lists.osgeo.org] On Behalf Of Pieter du Plooy
> Sent: Saturday, January 23, 2016 2:44 PM
> To: Brian M Hamlin <maplabs at light42.com>; live-demo at lists.osgeo.org
> Subject: Re: [Live-demo] Postgis questions
>
>
>
> Hi Brian
>
> In Ubuntu 14.04, set the last part of /etc/postgresql/9.4/main/postgresql.conf (under the comment
> # Add settings for extensions here
>
>
>
> as such:
>
> postgis.gdal_enabled_drivers 'ENABLE_ALL'
> postgis.enable_outdb_rasters TRUE
>
> restart postgres
>
> In your postgis enabled db, do the following:
> select long_name from st_gdaldrivers();
>
> and you will see a lot of gdal enabled drivers
>
> such as:
>
> long_name
> --------------------------------------------
> Virtual Raster
> GeoTIFF
> National Imagery Transmission Format
> Erdas Imagine Images (.img)
> Arc/Info ASCII Grid
> DTED Elevation Raster
> Portable Network Graphics
> JPEG JFIF
> Graphics Interchange Format (.gif)
> X11 PixMap Format
> ILWIS Raster Map
> SRTMHGT File Format
> JPEG-2000 driver based on OpenJPEG library
> FIT Image
> JPEG-2000 part 1 (ISO/IEC 15444-1)
> OGC Web Map Service
> Idrisi Raster A.1
> Intergraph Raster
> Golden Software ASCII Grid (.grd)
> Golden Software Binary Grid (.grd)
> Golden Software 7 Binary Grid (.grd)
> R Object Data Store
> ESRI .hdr Labelled
> FARSITE v.4 Landscape File (.lcp)
> Azavea Raster Grid format
> USGS Optional ASCII DEM (and CDED)
> Epsilon wavelets
> SAGA GIS Binary Grid (.sdat)
> Kml Super Overlay
> ASCII Gridded XYZ
> HF2/HFZ heightfield raster
> Geospatial PDF
> WEBP
> ZMap Plus Grid
> (34 rows)
>
> Regards
>
> Pieter
>
>
>
>
>
> On Sat, Jan 23, 2016 at 9:01 PM, Brian M Hamlin <maplabs at light42.com <mailto:maplabs at light42.com> > wrote:
>
> Hi Pieter --
>
>
>
> oh, ok.. thats new to me..
>
> according to the PostGIS docs page..
>
> http://postgis.net/docs/postgis_gdal_enabled_drivers.html
>
>
>
> those variables can be set at all levels..
>
> cluster-wide -> postgresql.conf
>
> database-persistant -> ALTER DATABASE ...
>
> database-temp, psql session temp -> set ....
>
>
>
> also apparently SHELL with bash-style environment vars, as in .bashrc
>
>
>
> I would think that all gdal drivers would be enabled by default, and that really you
>
> need raster out_db set... so I look here
>
> http://postgis.net/docs/postgis_enable_outdb_rasters.html
>
>
>
> make sense ?
>
> -Brian
>
>
>
> On Sat, 23 Jan 2016 19:51:42 +0200, Pieter du Plooy <pjduplooy at zpanelcp.com <mailto:pjduplooy at zpanelcp.com> > wrote:
>
> Hi Brian
>
> Thx for the info, but what I really need is where to
>
> postgis.gdal_enabled_drivers = 'ENABLE_ALL'
> and postgis.enable_outdb_rasters=1
> in Ubuntu 14.04, and system wide
> I did it previously in my .bashrc, but for some reason its not
> working now.
> Pieter
>
>
>
> On Sat, Jan 23, 2016 at 6:58 PM, Brian M Hamlin <maplabs at light42.com <mailto:maplabs at light42.com> > wrote:
>
> Hi Pieter --
>
>
>
> I have an a2 build running in a VM.
>
>
>
> user at live95a:~$ locate raster.tif <= there is an example file for a QGis plugin called this
>
> user at live95a:~$ gdalinfo /path/to/raster.tif
>
> hmm non-trivial .. open qgis to let qgis do the work
>
> qgis shows the projection is EPSG:32633
>
>
>
> user at live95a:~$ createdb raster_test
>
> user at live95a:~$ psql -c 'create extension postgis' raster_test
>
> user at live95a:~$ psql -c 'select postgis_full_version()' raster_test
>
> yes, RASTER is enabled
>
> use raster2pgsql to load a raster, as per PostGIS raster manual
>
>
>
> user at live95a:~$ raster2pgsql -s 32633 -I -C /path/to/raster.tif raster_test | less
>
> inspect output, yes looks valid
>
>
>
> user at live95a:~$ raster2pgsql -s 32633 -I -C /path/to/raster.tif raster_test | psql raster_test
>
> user at live95a:~$ psql -c '\d raster_test'
>
> note rid, rast columns.. lots of other detail
>
> better command line would name the tables, split into tiles, etc...
>
>
>
> hth --Brian
>
>
>
>
>
> On Sat, 23 Jan 2016 16:45:50 +0200, Pieter du Plooy <pjduplooy at zpanelcp.com <mailto:pjduplooy at zpanelcp.com> > wrote:
>
> I am struggling to enable postgis gdal drivers and outdb rasters on Ubuntu (using postgis from the osgeolive nightly, so its for trusty.
>
> How do I go about enabling them in Ubuntu Trusty?
>
> I have tried setting it in .profile, as well as .bashrc systemwide etc..., but no luck.
>
> Any help?
>
> Regards
>
> Pieter
>
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>
>
> --
> Brian M Hamlin
> OSGeo California Chapter
> blog.light42.com <http://blog.light42.com>
>
>
>
>
>
>
> --
> Brian M Hamlin
> OSGeo California Chapter
> blog.light42.com <http://blog.light42.com>
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--
Angelos Tzotsos, PhD
OSGeo Charter Member
http://users.ntua.gr/tzotsos
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