Python NetCDFFile.variables['permutation'][:]方法代码示例

# 需要导入模块: from anuga.file.netcdf import NetCDFFile [as 别名]
# 或者: from anuga.file.netcdf.NetCDFFile import variables['permutation'][:] [as 别名]

#.........这里部分代码省略.........
    number_of_latitudes = latitudes.shape[0]   # Number latitudes
    number_of_longitudes = longitudes.shape[0] # Number longitudes

    # The permutation vector of contains original indices
    # as given in ordering file or None in which case points
    # are assigned the trivial indices enumerating them from
    # 0 to number_of_points-1
    if permutation is None:
        permutation = num.arange(number_of_points, dtype=num.int)

    # NetCDF file definition
    outfile = NetCDFFile(stsname, netcdf_mode_w)

    description = 'Converted from URS mux2 files: %s' % basename_in

    # Create new file
    sts = Write_sts()
    sts.store_header(outfile,
                     times+starttime,
                     number_of_points,
                     description=description,
                     verbose=verbose,
                     sts_precision=netcdf_float)

    # Store
    from anuga.coordinate_transforms.redfearn import redfearn

    x = num.zeros(number_of_points, num.float)  # Easting
    y = num.zeros(number_of_points, num.float)  # Northing

    # Check zone boundaries
    if zone is None:
        refzone, _, _ = redfearn(latitudes[0], longitudes[0],
                                 central_meridian=central_meridian)
    else:
        refzone = zone

    old_zone = refzone
    old_easting = 0.0
    old_northing = 0.0

    for i in range(number_of_points):
        computed_zone, easting, northing = redfearn(latitudes[i], longitudes[i],
                                                    zone=zone,
                                                    central_meridian=central_meridian)
        x[i] = easting
        y[i] = northing
        if computed_zone != refzone:
            msg = 'All sts gauges need to be in the same zone. \n'
            msg += 'offending gauge:Zone %d,%.4f, %4f\n' \
                   % (computed_zone, easting, northing)
            msg += 'previous gauge:Zone %d,%.4f, %4f' \
                   % (old_zone, old_easting, old_northing)
            raise Exception, msg
        old_zone = computed_zone
        old_easting = easting
        old_northing = northing

    if origin is None:
        origin = Geo_reference(refzone, min(x), min(y))
    geo_ref = write_NetCDF_georeference(origin, outfile)

    elevation = num.resize(elevation, outfile.variables['elevation'][:].shape)
    outfile.variables['permutation'][:] = permutation.astype(num.int32) # Opteron 64
    outfile.variables['x'][:] = x - geo_ref.get_xllcorner()
    outfile.variables['y'][:] = y - geo_ref.get_yllcorner()
    outfile.variables['elevation'][:] = elevation

    stage = outfile.variables['stage']
    xmomentum = outfile.variables['xmomentum']
    ymomentum = outfile.variables['ymomentum']

    if verbose: log.critical('Converting quantities')

    for j in range(len(times)):
        for i in range(number_of_points):
            ha = mux['HA'][i,j]
            ua = mux['UA'][i,j]
            va = mux['VA'][i,j]
            if ha == NODATA:
                if verbose:
                    msg = 'Setting nodata value %d to 0 at time = %f, ' \
                          'point = %d' % (ha, times[j], i)
                    log.critical(msg)
                ha = 0.0
                ua = 0.0
                va = 0.0

            w = zscale*ha + mean_stage
            h = w - elevation[i]
            stage[j,i] = w

            xmomentum[j,i] = ua * h
            ymomentum[j,i] = -va * h # South is positive in mux files


    outfile.close()
    
    if verbose:
        log.critical('Wrote sts file ' + stsname)