[postgis-users] WKTRaster : gdal2wktraster.py cannot read AIG/Arc/Info Binary Grid
Peter Baumann
p.baumann at jacobs-university.de
Tue Jul 20 09:08:06 PDT 2010
On 07/20/2010 05:47 PM, Pierre Racine wrote:
>
> Since we have this bug with big rasters,
>
proven, any-size, ... ;-)
Who is proven? Well, running a dozen-TB seamless mosaic on PostgreSQL
for many years, having online-demos available since years, etc... you
decide, in comparison.
-Peter
> I would suggest you split your raster with something like GDAL
> gdal_retile.py and then import your tiles into a single WKT Raster
> table following the instruction provided in our tutorial. Each tile
> will be stored in a column cell of type RASTER similar to the PostGIS
> GEOMETRY type.
>
> As I said previously you can then query the raster in SQL like this:
>
> SELECT ST_Value(rast, ST_Geomfromtext('Point(-78.1 58.1)', 4326))
>
> FROM srtm_tiled_100x100
>
> WHERE ST_Intersects(rast::geometry, ST_Geomfromtext('Point(-78.1
> 58.1)', 4326)) AND whatever you want.
>
> Basically WKT Raster is the first true SQL interface with which is is
> simple to do such things… It's proven, any-size, cloud-scalable, and
> open source J Maybe not that prooven. But who is?
>
> There is also rasdaman but I don’t think you can use SQL. It would be
> nice if you could compare both… I can’t find time for this. Jorge has
> started comparing PostGIS WKT Raster with Oracle Georaster though.
>
> Pierre
>
> *From:* postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] *On Behalf Of
> *Sebastian E. Ovide
> *Sent:* 20 juillet 2010 10:46
> *To:* PostGIS Users Discussion
> *Subject:* Re: [postgis-users] WKTRaster : gdal2wktraster.py cannot
> read AIG/Arc/Info Binary Grid
>
> yes... with png worked... but it was a different png (a smaller one)...
>
> so I've converted the ESRI into a png and tried to import it... and it
> didn't work neither...
>
> so this is the situation:
> A have huge rusters (from 150kx150k).. In Oracle I would just load it
> (the huge raster) in a single row of a GeoRaster table and then Oracle
> GeoRaster would split it in small tiles and store one tile per line of
> another table (Raster Data Table)... then I can run a query similar to
> this one: SELECT getcellvalue(t.rastercolumn,x,y) from GeoRasterTable
> t where t.id <http://t.id>=1; and GeoRaster will query automatically
> the spatial indexes and the Raster Data Table and it will find the
> right tile etc...
>
> I do not know how WKTRaster works.... If I cannot import a such big
> image, of course I can split it in smaller georeferenced tiles...
> (how?)... but.... My main question is: after that, how will the table
> look like ? how can I do the same query (where id=1 or where name="UK"
> etc...) ?
>
> On Tue, Jul 20, 2010 at 2:31 PM, Pierre Racine
> <Pierre.Racine at sbf.ulaval.ca <mailto:Pierre.Racine at sbf.ulaval.ca>> wrote:
>
> Wait. You first said the png was working. Now it’s not? Did you try
> gdal_translate with the ESRI grid? For sure I haven’t test yet with
> such big rasters. Is this the result of a merge or all your original
> raster are all this size? The point is that with WKT Raster you don’t
> have to merge your raster first into a gigantic raster in order to get
> it store in a unique table like with Oracle Spatial.
>
> Pierre
>
> *From:* postgis-users-bounces at postgis.refractions.net
> <mailto:postgis-users-bounces at postgis.refractions.net>
> [mailto:postgis-users-bounces at postgis.refractions.net
> <mailto:postgis-users-bounces at postgis.refractions.net>] *On Behalf Of
> *Sebastian E. Ovide
> *Sent:* 20 juillet 2010 05:51
> *To:* PostGIS Users Discussion
> *Subject:* Re: [postgis-users] WKTRaster : gdal2wktraster.py cannot
> read AIG/Arc/Info Binary Grid
>
> Hi Pierre,
>
> Does gdal2wktraster.py have any limitation on the maximum number of
> columnsxrows ?
>
> in my case, my raster is 107759 x 168633...
>
> gdal works well:
>
> sebas at SeansPC:~/rasters$ gdal_translate -of PNG raster/ test.png
> Input file size is 107759, 168633
> 0...10...20...30...40...50...60...70...80...90...100 - done.
>
>
> sebas at SeansPC:~/rasters$ python gdal2wktraster.py -r raster/ -t
> sebastable -o ok.sql
> gdal2wktraster.py:695: DeprecationWarning: 'H' format requires 0 <=
> number <= 65535
> hexwkb += wkblify('H', xsize)
> gdal2wktraster.py:696: DeprecationWarning: 'H' format requires 0 <=
> number <= 65535
> hexwkb += wkblify('H', ysize)
> gdal2wktraster.py:727: DeprecationWarning: integer argument expected,
> got float
> hexwkb += wkblify(pt2fmt(pixtype), nodata)
> Traceback (most recent call last):
> File "gdal2wktraster.py", line 1013, in <module>
> main()
> File "gdal2wktraster.py", line 976, in main
> wkblify_raster(opts, filename, i)
> File "gdal2wktraster.py", line 921, in wkblify_raster
> summary = wkblify_raster_level(options, ds,
> options.overview_level, band_range, infile, i)
> File "gdal2wktraster.py", line 888, in wkblify_raster_level
> hexwkb += wkblify_band(options, band, level, xoff, yoff,
> read_block_size, block_size, infile, b)
> File "gdal2wktraster.py", line 777, in wkblify_band
> target_block_size[0], target_block_size[1])
> File "/usr/lib/python2.6/dist-packages/osgeo/gdal.py", line 895, in
> ReadAsArray
> buf_xsize, buf_ysize, buf_obj )
> File "/usr/lib/python2.6/dist-packages/osgeo/gdal_array.py", line
> 228, in BandReadAsArray
> ar = numpy.empty([buf_ysize,buf_xsize], dtype = typecode)
> MemoryError
>
>
> sebas at SeansPC:~/rasters$ python gdal2wktraster.py -r test.png -t
> sebastable -o ok.sql
> gdal2wktraster.py:695: DeprecationWarning: 'H' format requires 0 <=
> number <= 65535
> hexwkb += wkblify('H', xsize)
> gdal2wktraster.py:696: DeprecationWarning: 'H' format requires 0 <=
> number <= 65535
> hexwkb += wkblify('H', ysize)
> gdal2wktraster.py:727: DeprecationWarning: integer argument expected,
> got float
> hexwkb += wkblify(pt2fmt(pixtype), nodata)
> Traceback (most recent call last):
> File "gdal2wktraster.py", line 1013, in <module>
> main()
> File "gdal2wktraster.py", line 976, in main
> wkblify_raster(opts, filename, i)
> File "gdal2wktraster.py", line 921, in wkblify_raster
> summary = wkblify_raster_level(options, ds,
> options.overview_level, band_range, infile, i)
> File "gdal2wktraster.py", line 888, in wkblify_raster_level
> hexwkb += wkblify_band(options, band, level, xoff, yoff,
> read_block_size, block_size, infile, b)
> File "gdal2wktraster.py", line 777, in wkblify_band
> target_block_size[0], target_block_size[1])
> File "/usr/lib/python2.6/dist-packages/osgeo/gdal.py", line 895, in
> ReadAsArray
> buf_xsize, buf_ysize, buf_obj )
> File "/usr/lib/python2.6/dist-packages/osgeo/gdal_array.py", line
> 228, in BandReadAsArray
> ar = numpy.empty([buf_ysize,buf_xsize], dtype = typecode)
> MemoryError
>
>
>
> On Mon, Jul 19, 2010 at 5:56 PM, Pierre Racine
> <Pierre.Racine at sbf.ulaval.ca <mailto:Pierre.Racine at sbf.ulaval.ca>> wrote:
>
> Hi Sebastian,
>
> I can convert ESRI Grid file to .sql without problem using
> gdal2wktraster.py and the same parameters as you. I can do both
> integer and floating point rasters.
>
> Maybe this is a GDAL problem. Try to convert it using gdal_translate
> (to tiff for example). This would be a better test than just gdalinfo.
>
> Could you provide us with a file sample?
>
> Pierre
>
> *From:* postgis-users-bounces at postgis.refractions.net
> <mailto:postgis-users-bounces at postgis.refractions.net>
> [mailto:postgis-users-bounces at postgis.refractions.net
> <mailto:postgis-users-bounces at postgis.refractions.net>] *On Behalf Of
> *Sebastian E. Ovide
> *Sent:* 19 juillet 2010 12:28
> *To:* PostGIS Users Discussion
> *Subject:* [postgis-users] WKTRaster : gdal2wktraster.py cannot read
> AIG/Arc/Info Binary Grid
>
> Hi All,
>
> trying to create a SQL with gdal2wktraster.py. It works on PNG but it
> doesn't on AIG files...
>
> Note: As Gdal works fine.
>
> C:\Program Files\PostgreSQL\8.4\bin>gdalinfo c:\tmp\raster
> Driver: AIG/Arc/Info Binary Grid
> Files: c:\tmp\raster
> c:\tmp\raster\dblbnd.adf
> c:\tmp\raster\hdr.adf
> c:\tmp\raster\metadata.xml
> c:\tmp\raster\prj.adf
> c:\tmp\raster\sta.adf
> c:\tmp\raster\vat.adf
> c:\tmp\raster\w001000.adf
> c:\tmp\raster\w001000x.adf
> c:\tmp\raster\w001001.adf
> c:\tmp\raster\w001001x.adf
> c:\tmp\raster\z001001.adf
> c:\tmp\raster\z001001x.adf
> c:\tmp\raster\z001002.adf
> c:\tmp\raster\z001002x.adf
> c:\tmp\raster\z001003.adf
> c:\tmp\raster\z001003x.adf
> c:\tmp\raster\z001004.adf
> c:\tmp\raster\z001004x.adf
> c:\tmp\raster\z001005.adf
> c:\tmp\raster\z001005x.adf
> c:\tmp\raster\z001006.adf
> c:\tmp\raster\z001006x.adf
> c:\tmp\raster\z001007.adf
> c:\tmp\raster\z001007x.adf
> c:\tmp\raster\z001008.adf
> c:\tmp\raster\z001008x.adf
> c:\tmp\raster\z001009.adf
> c:\tmp\raster\z001009x.adf
> c:\tmp\raster\z001010.adf
> c:\tmp\raster\z001010x.adf
> c:\tmp\raster\z001011.adf
> c:\tmp\raster\z001011x.adf
> c:\tmp\raster\z001012.adf
> c:\tmp\raster\z001012x.adf
> c:\tmp\raster\z001013.adf
> c:\tmp\raster\z001013x.adf
> c:\tmp\raster\z001014.adf
> c:\tmp\raster\z001014x.adf
> c:\tmp\raster\z001015.adf
> c:\tmp\raster\z001015x.adf
> Size is 107759, 168633
> Coordinate System is:
> PROJCS["unnamed",
> GEOGCS["Unknown datum based upon the Airy 1830 ellipsoid",
> DATUM["Not_specified_based_on_Airy_1830_ellipsoid",
> SPHEROID["Airy 1830",6377563.396,299.3249646,
> AUTHORITY["EPSG","7001"]],
> AUTHORITY["EPSG","6001"]],
> PRIMEM["Greenwich",0,
> AUTHORITY["EPSG","8901"]],
> UNIT["degree",0.01745329251994328,
> AUTHORITY["EPSG","9122"]],
> AUTHORITY["EPSG","4001"]],
> PROJECTION["Transverse_Mercator"],
> PARAMETER["latitude_of_origin",49],
> PARAMETER["central_meridian",-2],
> PARAMETER["scale_factor",0.9996012717],
> PARAMETER["false_easting",400000],
> PARAMETER["false_northing",-100000],
> UNIT["METERS",1]]
> Origin = (128110.000000000000000,813270.000000000000000)
> Pixel Size = (5.000000000000000,-5.000000000000000)
> Corner Coordinates:
> Upper Left ( 128110.000, 813270.000) ( 6d29'37.32"W, 57d 7'47.53"N)
> Lower Left ( 128110.000, -29895.000) ( 5d45'40.00"W, 49d34'10.24"N)
> Upper Right ( 666905.000, 813270.000) ( 2d24'41.72"E, 57d 7'58.04"N)
> Lower Right ( 666905.000, -29895.000) ( 1d41'32.29"E, 49d34'18.23"N)
> Center ( 397507.500, 391687.500) ( 2d 2'15.04"W, 53d25'18.19"N)
> Band 1 Block=256x4 Type=Byte, ColorInterp=Undefined
> Min=1.000 Max=4.000
> NoData Value=255
>
>
> C:\Program Files\PostgreSQL\8.4\bin>python gdal2wktraster.py -r
> c:\tmp\raster -t sebastable -o c:\tmp\sebas.sql
> gdal2wktraster.py:644: DeprecationWarning: 'H' format requires 0 <=
> number <= 65535
> hexstr = binascii.hexlify(struct.pack(fmt_little, data)).upper()
> gdal2wktraster.py:644: DeprecationWarning: integer argument expected,
> got float
> hexstr = binascii.hexlify(struct.pack(fmt_little, data)).upper()
> ERROR 2: Multiplication overflow : 107759 * 168633 * 1
> Traceback (most recent call last):
> File "gdal2wktraster.py", line 1013, in <module>
> main()
> File "gdal2wktraster.py", line 976, in main
> wkblify_raster(opts, filename, i)
> File "gdal2wktraster.py", line 921, in wkblify_raster
> summary = wkblify_raster_level(options, ds,
> options.overview_level, band_range, infile, i)
> File "gdal2wktraster.py", line 888, in wkblify_raster_level
> hexwkb += wkblify_band(options, band, level, xoff, yoff,
> read_block_size, block_size, infile, b)
> File "gdal2wktraster.py", line 777, in wkblify_band
> target_block_size[0], target_block_size[1])
> File "C:\OSGeo4W\apps\gdal-16\pymod\osgeo\gdal.py", line 835, in
> ReadAsArray
> buf_xsize, buf_ysize, buf_obj )
> File "C:\OSGeo4W\apps\gdal-16\pymod\osgeo\gdal_array.py", line 140,
> in BandReadAsArray
> ar = numpy.reshape(ar, [buf_ysize,buf_xsize])
> File
> "C:\OSGeo4W\apps\Python25\lib\site-packages\numpy\core\fromnumeric.py", line
> 116, in reshape
> return reshape(newshape, order=order)
> ValueError: total size of new array must be unchanged
>
> Any ideas ?
> --
> Sebastian E. Ovide
>
>
> _______________________________________________
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>
>
>
>
> --
> Sebastian E. Ovide
>
> skype: sebastian.ovide
>
> +353 (0) 87 6340149
>
>
> _______________________________________________
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>
>
>
>
> --
> Sebastian E. Ovide
>
>
>
--
Dr. Peter Baumann
- Professor of Computer Science, Jacobs University Bremen
www.faculty.jacobs-university.de/pbaumann
mail: p.baumann at jacobs-university.de
tel: +49-421-200-3178, fax: +49-421-200-493178
- Executive Director, rasdaman GmbH Bremen (HRB 147737)
www.rasdaman.com, mail: baumann at rasdaman.com
tel: 0800-rasdaman, fax: 0800-rasdafax, mobile: +49-173-5837882
"Si forte in alienas manus oberraverit hec peregrina epistola incertis ventis dimissa, sed Deo commendata, precamur ut ei reddatur cui soli destinata, nec preripiat quisquam non sibi parata." (mail disclaimer, AD 10xx)
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