ST_GDALDrivers
Name
ST_GDALDrivers — Returns a list of raster formats supported by your lib gdal. These are the formats you can output your raster using ST_AsGDALRaster.
Synopsis
setof record
ST_GDALDrivers
(
integer
OUT idx
, text
OUT short_name
, text
OUT long_name
, text
OUT create_options
)
;
Description
Returns a list of raster formats short_name,long_name and creator options of each format supported by your lib gdal. Use the short_name as input in the
format
parameter of
ST_AsGDALRaster
.
Options vary depending on what drivers your libgdal was compiled with.
create_options
returns an xml formatted set of CreationOptionList/Option consisting of name and optional
type
,
description
and set of
VALUE
for each creator option for the specific driver.
Changed: 2.0.6, 2.1.3 - by default no drivers are enabled, unless GUC or Environment variable gdal_enabled_drivers is set.
Availability: 2.0.0 - requires GDAL >= 1.6.0.
Examples: List of Drivers
SET postgis.gdal_enabled_drivers = 'ENABLE_ALL'; SELECT short_name, long_name FROM st_gdaldrivers() ORDER BY short_name; short_name | long_name -----------------+-------------------------------------- AAIGrid | Arc/Info ASCII Grid ARG | Azavea Raster Grid format DTED | DTED Elevation Raster EHdr | ESRI .hdr Labelled FIT | FIT Image GIF | Graphics Interchange Format (.gif) GPKG | GeoPackage GS7BG | Golden Software 7 Binary Grid (.grd) GSAG | Golden Software ASCII Grid (.grd) GSBG | Golden Software Binary Grid (.grd) GTiff | GeoTIFF HF2 | HF2/HFZ heightfield raster HFA | Erdas Imagine Images (.img) ILWIS | ILWIS Raster Map INGR | Intergraph Raster JPEG | JPEG JFIF KMLSUPEROVERLAY | Kml Super Overlay LCP | FARSITE v.4 Landscape File (.lcp) MFF | Vexcel MFF Raster NITF | National Imagery Transmission Format PNG | Portable Network Graphics R | R Object Data Store RST | Idrisi Raster A.1 SAGA | SAGA GIS Binary Grid (.sdat) SRTMHGT | SRTMHGT File Format USGSDEM | USGS Optional ASCII DEM (and CDED) VRT | Virtual Raster WMS | OGC Web Map Service XPM | X11 PixMap Format XYZ | ASCII Gridded XYZ ZMap | ZMap Plus Grid (31 rows)
Example: List of options for each driver
-- Output the create options XML column of JPEG as a table --
-- Note you can use these creator options in ST_AsGDALRaster options argument
SELECT (xpath('@name', g.opt))[1]::text As oname,
(xpath('@type', g.opt))[1]::text As otype,
(xpath('@description', g.opt))[1]::text As descrip
FROM (SELECT unnest(xpath('/CreationOptionList/Option', create_options::xml)) As opt
FROM st_gdaldrivers()
WHERE short_name = 'JPEG') As g;
oname | otype | descrip
--------------------+---------+-------------------------------------------------
PROGRESSIVE | boolean | whether to generate a progressive JPEG
QUALITY | int | good=100, bad=0, default=75
WORLDFILE | boolean | whether to geneate a worldfile
INTERNAL_MASK | boolean | whether to generate a validity mask
COMMENT | string | Comment
SOURCE_ICC_PROFILE | string | ICC profile encoded in Base64
EXIF_THUMBNAIL | boolean | whether to generate an EXIF thumbnail(overview).
By default its max dimension will be 128
THUMBNAIL_WIDTH | int | Forced thumbnail width
THUMBNAIL_HEIGHT | int | Forced thumbnail height
(9 rows)
-- raw xml output for creator options for GeoTiff --
SELECT create_options
FROM st_gdaldrivers()
WHERE short_name = 'GTiff';
<CreationOptionList>
<Option name="COMPRESS" type="string-select">
<Value>NONE</Value>
<Value>LZW</Value>
<Value>PACKBITS</Value>
<Value>JPEG</Value>
<Value>CCITTRLE</Value>
<Value>CCITTFAX3</Value>
<Value>CCITTFAX4</Value>
<Value>DEFLATE</Value>
</Option>
<Option name="PREDICTOR" type="int" description="Predictor Type"/>
<Option name="JPEG_QUALITY" type="int" description="JPEG quality 1-100" default="75"/>
<Option name="ZLEVEL" type="int" description="DEFLATE compression level 1-9" default="6"/>
<Option name="NBITS" type="int" description="BITS for sub-byte files (1-7), sub-uint16 (9-15), sub-uint32 (17-31)"/>
<Option name="INTERLEAVE" type="string-select" default="PIXEL">
<Value>BAND</Value>
<Value>PIXEL</Value>
</Option>
<Option name="TILED" type="boolean" description="Switch to tiled format"/>
<Option name="TFW" type="boolean" description="Write out world file"/>
<Option name="RPB" type="boolean" description="Write out .RPB (RPC) file"/>
<Option name="BLOCKXSIZE" type="int" description="Tile Width"/>
<Option name="BLOCKYSIZE" type="int" description="Tile/Strip Height"/>
<Option name="PHOTOMETRIC" type="string-select">
<Value>MINISBLACK</Value>
<Value>MINISWHITE</Value>
<Value>PALETTE</Value>
<Value>RGB</Value>
<Value>CMYK</Value>
<Value>YCBCR</Value>
<Value>CIELAB</Value>
<Value>ICCLAB</Value>
<Value>ITULAB</Value>
</Option>
<Option name="SPARSE_OK" type="boolean" description="Can newly created files have missing blocks?" default="FALSE"/>
<Option name="ALPHA" type="boolean" description="Mark first extrasample as being alpha"/>
<Option name="PROFILE" type="string-select" default="GDALGeoTIFF">
<Value>GDALGeoTIFF</Value>
<Value>GeoTIFF</Value>
<Value>BASELINE</Value>
</Option>
<Option name="PIXELTYPE" type="string-select">
<Value>DEFAULT</Value>
<Value>SIGNEDBYTE</Value>
</Option>
<Option name="BIGTIFF" type="string-select" description="Force creation of BigTIFF file">
<Value>YES</Value>
<Value>NO</Value>
<Value>IF_NEEDED</Value>
<Value>IF_SAFER</Value>
</Option>
<Option name="ENDIANNESS" type="string-select" default="NATIVE" description="Force endianness of created file. For DEBUG purpose mostly">
<Value>NATIVE</Value>
<Value>INVERTED</Value>
<Value>LITTLE</Value>
<Value>BIG</Value>
</Option>
<Option name="COPY_SRC_OVERVIEWS" type="boolean" default="NO" description="Force copy of overviews of source dataset (CreateCopy())"/>
</CreationOptionList>
-- Output the create options XML column for GTiff as a table --
SELECT (xpath('@name', g.opt))[1]::text As oname,
(xpath('@type', g.opt))[1]::text As otype,
(xpath('@description', g.opt))[1]::text As descrip,
array_to_string(xpath('Value/text()', g.opt),', ') As vals
FROM (SELECT unnest(xpath('/CreationOptionList/Option', create_options::xml)) As opt
FROM st_gdaldrivers()
WHERE short_name = 'GTiff') As g;
oname | otype | descrip | vals
--------------------+---------------+----------------------------------------------------------------------+---------------------------------------------------------------------------
COMPRESS | string-select | | NONE, LZW, PACKBITS, JPEG, CCITTRLE, CCITTFAX3, CCITTFAX4, DEFLATE
PREDICTOR | int | Predictor Type |
JPEG_QUALITY | int | JPEG quality 1-100 |
ZLEVEL | int | DEFLATE compression level 1-9 |
NBITS | int | BITS for sub-byte files (1-7), sub-uint16 (9-15), sub-uint32 (17-31) |
INTERLEAVE | string-select | | BAND, PIXEL
TILED | boolean | Switch to tiled format |
TFW | boolean | Write out world file |
RPB | boolean | Write out .RPB (RPC) file |
BLOCKXSIZE | int | Tile Width |
BLOCKYSIZE | int | Tile/Strip Height |
PHOTOMETRIC | string-select | | MINISBLACK, MINISWHITE, PALETTE, RGB, CMYK, YCBCR, CIELAB, ICCLAB, ITULAB
SPARSE_OK | boolean | Can newly created files have missing blocks? |
ALPHA | boolean | Mark first extrasample as being alpha |
PROFILE | string-select | | GDALGeoTIFF, GeoTIFF, BASELINE
PIXELTYPE | string-select | | DEFAULT, SIGNEDBYTE
BIGTIFF | string-select | Force creation of BigTIFF file | YES, NO, IF_NEEDED, IF_SAFER
ENDIANNESS | string-select | Force endianness of created file. For DEBUG purpose mostly | NATIVE, INVERTED, LITTLE, BIG
COPY_SRC_OVERVIEWS | boolean | Force copy of overviews of source dataset (CreateCopy()) |
(19 rows)