make_sql_addrastercolumn()

def raster2pgsql.make_sql_addrastercolumn	(		options,
			pixeltypes,
			nodata,
			pixelsize,
			blocksize,
			extent
	)

Definition at line 383 of file raster2pgsql.py.

def make_sql_addrastercolumn(options, pixeltypes, nodata, pixelsize, blocksize, extent):
    assert len(pixeltypes) > 0, "No pixel types given"
    ts = make_sql_schema_table_names(options.table)
    pt = make_sql_value_array(pixeltypes)
 
    nd = 'null'
    if nodata is not None and len(nodata) > 0:
        nd = make_sql_value_array(nodata)
 
    odb = 'false'
    if options.register:
        odb = 'true'
 
    rb = 'false'
    extgeom = 'null'
    bs = ( 'null', 'null' )
    # Check if regular blocking mode requested
    if options.block_size is not None:
        assert pixelsize is not None, "Pixel size is none, but regular blocking requested"
        assert blocksize is not None, "Block size is none, but regular blocking requested"
        assert extent is not None, "Extent is none, but regular blocking requested"
        assert len(pixelsize) == 2, "Invalid pixel size, two values expected"
        assert len(blocksize) == 2, "Invalid block size, two values expected"
        assert len(extent) == 4, "Invalid extent, four coordinates expected"
        assert len(extent[0]) == len(extent[3]) == 2, "Invalid extent, pair of X and Y pair expected"
        rb = 'true'
        bs = ( blocksize[0], blocksize[1] )
        extgeom = "ST_Envelope(ST_SetSRID('POLYGON((%.15f %.15f,%.15f %.15f,%.15f %.15f,%.15f %.15f,%.15f %.15f))'::geometry, %d))" % \
                  (extent[0][0], extent[0][1], extent[1][0], extent[1][1],
                   extent[2][0], extent[2][1], extent[3][0], extent[3][1],
                   extent[0][0], extent[0][1], options.srid)
 
    sql = "SELECT AddRasterColumn('%s','%s','%s',%d, %s, %s, %s, %s, %.15f, %.15f, %s, %s, %s);\n" % \
           (ts[0], ts[1], options.column, options.srid, pt, odb, rb, nd,
            pixelsize[0], pixelsize[1], bs[0], bs[1], extgeom)
 
    logit("SQL: %s" % sql)
    return sql
 

References logit(), make_sql_schema_table_names(), and make_sql_value_array().

Referenced by wkblify_raster_level().

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