/usr/lib/python3/dist-packages/rasterio/rio/merge.py is in python3-rasterio 0.36.0-2build5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | """Merge command."""
import logging
import click
from cligj import files_inout_arg, format_opt
from .helpers import resolve_inout
from . import options
import rasterio
@click.command(short_help="Merge a stack of raster datasets.")
@files_inout_arg
@options.output_opt
@format_opt
@options.bounds_opt
@options.resolution_opt
@options.nodata_opt
@options.force_overwrite_opt
@click.option('--precision', type=int, default=7,
help="Number of decimal places of precision in alignment of "
"pixels")
@options.creation_options
@click.pass_context
def merge(ctx, files, output, driver, bounds, res, nodata, force_overwrite,
precision, creation_options):
"""Copy valid pixels from input files to an output file.
All files must have the same number of bands, data type, and
coordinate reference system.
Input files are merged in their listed order using the reverse
painter's algorithm. If the output file exists, its values will be
overwritten by input values.
Geospatial bounds and resolution of a new output file in the
units of the input file coordinate reference system may be provided
and are otherwise taken from the first input file.
Note: --res changed from 2 parameters in 0.25.
\b
--res 0.1 0.1 => --res 0.1 (square)
--res 0.1 0.2 => --res 0.1 --res 0.2 (rectangular)
"""
from rasterio.merge import merge as merge_tool
verbosity = (ctx.obj and ctx.obj.get('verbosity')) or 1
output, files = resolve_inout(
files=files, output=output, force_overwrite=force_overwrite)
with rasterio.Env(CPL_DEBUG=verbosity > 2):
sources = [rasterio.open(f) for f in files]
dest, output_transform = merge_tool(sources, bounds=bounds, res=res,
nodata=nodata, precision=precision)
profile = sources[0].profile
profile.pop('affine')
profile['transform'] = output_transform
profile['height'] = dest.shape[1]
profile['width'] = dest.shape[2]
profile['driver'] = driver
profile.update(**creation_options)
with rasterio.open(output, 'w', **profile) as dst:
dst.write(dest)
# uses the colormap in the first input raster.
try:
colormap = sources[0].colormap(1)
dst.write_colormap(1, colormap)
except ValueError:
pass
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