ST_GDALDrivers — 返回 PostGIS 通过 GDAL 支持的栅格格式列表。只有 can_write=True 的格式才能被 ST_AsGDALRaster 使用
setof record ST_GDALDrivers(integer OUT idx, text OUT short_name, text OUT long_name, text OUT can_read, text OUT can_write, text OUT create_options);
返回 GDAL 支持的栅格格式的 short_name、long_name 和每个格式的创建选项列表。在 ST_AsGDALRaster 的 format 参数中使用 short_name 作为输入。选项根据 libgdal 编译时使用的驱动程序而有所不同。 create_options 返回一个 XML 格式的 CreationOptionList/Option 集合，包含每个驱动程序的创建选项的名称以及可选的 type、description 和 VALUE 集合。
更改：2.5.0 - 添加 can_read 和 can_write 列。
更改：2.0.6、2.1.3 - 默认情况下，除非设置 GUC 或环境变量 gdal_enabled_drivers，否则不会启用任何驱动程序。
可用性：2.0.0 - 需要 GDAL >= 1.6.0。
SET postgis.gdal_enabled_drivers = 'ENABLE_ALL'; SELECT short_name, long_name, can_write FROM st_gdaldrivers() ORDER BY short_name; short_name | long_name | can_write -----------------+-------------------------------------------------------------+----------- AAIGrid | Arc/Info ASCII Grid | t ACE2 | ACE2 | f ADRG | ARC Digitized Raster Graphics | f AIG | Arc/Info Binary Grid | f AirSAR | AirSAR Polarimetric Image | f ARG | Azavea Raster Grid format | t BAG | Bathymetry Attributed Grid | f BIGGIF | Graphics Interchange Format (.gif) | f BLX | Magellan topo (.blx) | t BMP | MS Windows Device Independent Bitmap | f BSB | Maptech BSB Nautical Charts | f PAux | PCI .aux Labelled | f PCIDSK | PCIDSK Database File | f PCRaster | PCRaster Raster File | f PDF | Geospatial PDF | f PDS | NASA Planetary Data System | f PDS4 | NASA Planetary Data System 4 | t PLMOSAIC | Planet Labs Mosaics API | f PLSCENES | Planet Labs Scenes API | f PNG | Portable Network Graphics | t PNM | Portable Pixmap Format (netpbm) | f PRF | Racurs PHOTOMOD PRF | f R | R Object Data Store | t Rasterlite | Rasterlite | t RDA | DigitalGlobe Raster Data Access driver | f RIK | Swedish Grid RIK (.rik) | f RMF | Raster Matrix Format | f ROI_PAC | ROI_PAC raster | f RPFTOC | Raster Product Format TOC format | f RRASTER | R Raster | f RS2 | RadarSat 2 XML Product | f RST | Idrisi Raster A.1 | t SAFE | Sentinel-1 SAR SAFE Product | f SAGA | SAGA GIS Binary Grid (.sdat, .sg-grd-z) | t SAR_CEOS | CEOS SAR Image | f SDTS | SDTS Raster | f SENTINEL2 | Sentinel 2 | f SGI | SGI Image File Format 1.0 | f SNODAS | Snow Data Assimilation System | f SRP | Standard Raster Product (ASRP/USRP) | f SRTMHGT | SRTMHGT File Format | t Terragen | Terragen heightfield | f TIL | EarthWatch .TIL | f TSX | TerraSAR-X Product | f USGSDEM | USGS Optional ASCII DEM (and CDED) | t VICAR | MIPL VICAR file | f VRT | Virtual Raster | t WCS | OGC Web Coverage Service | f WMS | OGC Web Map Service | t WMTS | OGC Web Map Tile Service | t XPM | X11 PixMap Format | t XYZ | ASCII Gridded XYZ | t ZMap | ZMap Plus Grid | t
-- 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)