133 lines
5.2 KiB
Python
133 lines
5.2 KiB
Python
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"""Command access to dataset metadata, stats, and more."""
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import json
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from attr import asdict
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import click
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import rasterio
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from rasterio.rio import options
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from rasterio.transform import from_gcps
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@click.command(short_help="Print information about a data file.")
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@options.file_in_arg
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@click.option('--meta', 'aspect', flag_value='meta', default=True,
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help="Show data file structure (default).")
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@click.option('--tags', 'aspect', flag_value='tags',
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help="Show data file tags.")
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@click.option('--namespace', help="Select a tag namespace.")
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@click.option('--indent', default=None, type=int,
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help="Indentation level for pretty printed output")
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# Options to pick out a single metadata item and print it as
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# a string.
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@click.option('--count', 'meta_member', flag_value='count',
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help="Print the count of bands.")
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@click.option('-t', '--dtype', 'meta_member', flag_value='dtype',
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help="Print the dtype name.")
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@click.option('--nodata', 'meta_member', flag_value='nodata',
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help="Print the nodata value.")
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@click.option('-f', '--format', '--driver', 'meta_member', flag_value='driver',
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help="Print the format driver.")
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@click.option('--shape', 'meta_member', flag_value='shape',
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help="Print the (height, width) shape.")
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@click.option('--height', 'meta_member', flag_value='height',
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help="Print the height (number of rows).")
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@click.option('--width', 'meta_member', flag_value='width',
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help="Print the width (number of columns).")
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@click.option('--crs', 'meta_member', flag_value='crs',
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help="Print the CRS as a PROJ.4 string.")
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@click.option('--bounds', 'meta_member', flag_value='bounds',
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help="Print the boundary coordinates "
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"(left, bottom, right, top).")
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@click.option('-r', '--res', 'meta_member', flag_value='res',
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help="Print pixel width and height.")
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@click.option('--lnglat', 'meta_member', flag_value='lnglat',
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help="Print longitude and latitude at center.")
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@click.option('--stats', 'meta_member', flag_value='stats',
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help="Print statistics (min, max, mean) of a single band "
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"(use --bidx).")
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@click.option('--checksum', 'meta_member', flag_value='checksum',
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help="Print integer checksum of a single band "
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"(use --bidx).")
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@click.option('--subdatasets', 'meta_member', flag_value='subdatasets',
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help="Print subdataset identifiers.")
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@click.option('-v', '--tell-me-more', '--verbose', 'verbose', is_flag=True,
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help="Output extra information.")
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@options.bidx_opt
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@options.masked_opt
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@click.pass_context
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def info(ctx, input, aspect, indent, namespace, meta_member, verbose, bidx,
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masked):
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"""Print metadata about the dataset as JSON.
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Optionally print a single metadata item as a string.
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"""
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with ctx.obj['env'], rasterio.open(input) as src:
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info = dict(src.profile)
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info['shape'] = (info['height'], info['width'])
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info['bounds'] = src.bounds
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if src.crs:
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epsg = src.crs.to_epsg()
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if epsg:
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info["crs"] = f"EPSG:{epsg}"
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else:
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info['crs'] = src.crs.to_string()
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else:
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info['crs'] = None
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info['res'] = src.res
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info['colorinterp'] = [ci.name for ci in src.colorinterp]
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info['units'] = [units or None for units in src.units]
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info['descriptions'] = src.descriptions
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info['indexes'] = src.indexes
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info['mask_flags'] = [[
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flag.name for flag in flags] for flags in src.mask_flag_enums]
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if src.crs:
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info['lnglat'] = src.lnglat()
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gcps, gcps_crs = src.gcps
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if gcps:
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info['gcps'] = {'points': [p.asdict() for p in gcps]}
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if gcps_crs:
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epsg = gcps_crs.to_epsg()
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if epsg:
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info["gcps"]["crs"] = f"EPSG:{epsg}"
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else:
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info['gcps']['crs'] = src.crs.to_string()
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else:
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info['gcps']['crs'] = None
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info['gcps']['transform'] = from_gcps(gcps)
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if verbose:
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stats = [asdict(so) for so in src.stats()]
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info['stats'] = stats
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info['checksum'] = [src.checksum(i) for i in src.indexes]
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if aspect == 'meta':
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if meta_member == 'subdatasets':
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for name in src.subdatasets:
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click.echo(name)
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elif meta_member == 'stats':
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st = src.statistics(bidx)
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click.echo("{st.min} {st.max} {st.mean} {st.std}".format(st=st))
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elif meta_member == 'checksum':
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click.echo(str(src.checksum(bidx)))
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elif meta_member:
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if isinstance(info[meta_member], (list, tuple)):
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click.echo(" ".join(map(str, info[meta_member])))
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else:
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click.echo(info[meta_member])
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else:
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click.echo(json.dumps(info, sort_keys=True, indent=indent))
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elif aspect == 'tags':
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click.echo(
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json.dumps(src.tags(ns=namespace), indent=indent))
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