def tile(
scene: str,
z: int,
x: int,
y: int,
scale: int = 1,
ext: str = "png",
bands: str = None,
percents: str = "",
expr: str = None,
rescale: str = None,
color_formula: str = None,
color_map: str = None,
) -> Tuple[str, str, BinaryIO]:
"""Handle tile requests."""
driver = "jpeg" if ext == "jpg" else ext
if bands and expr:
raise CbersTilerError("Cannot pass bands and expression")
tilesize = scale * 256
if expr is not None:
tile, mask = expression(scene, x, y, z, expr=expr, tilesize=tilesize)
elif bands is not None:
tile, mask = cbers_tile(scene,
x,
y,
z,
bands=tuple(bands.split(",")),
tilesize=tilesize,
percents=percents)
else:
raise CbersTilerError("No bands nor expression given")
if tile is None or mask is None:
return (
"OK",
f"image/png",
b'',
)
rtile, rmask = _postprocess(tile,
mask,
rescale=None,
color_formula=color_formula)
if color_map:
color_map = get_colormap(color_map, format="gdal")
options = img_profiles.get(driver, {})
return (
"OK",
f"image/{ext}",
array_to_image(rtile,
rmask,
img_format=driver,
color_map=color_map,
**options),
)
def tile(
z: int,
x: int,
y: int,
scale: int = 1,
ext: str = None,
url: str = None,
indexes: Union[str, Tuple[int]] = None,
expr: str = None,
nodata: Union[str, int, float] = None,
rescale: str = None,
color_formula: str = None,
color_map: str = None,
) -> Tuple[str, str, BinaryIO]:
"""Handle tile requests."""
driver = "jpeg" if ext == "jpg" else ext
if indexes and expr:
raise TilerError("Cannot pass indexes and expression")
if not url:
raise TilerError("Missing 'url' parameter")
if isinstance(indexes, str):
indexes = tuple(int(s) for s in re.findall(r"\d+", indexes))
if nodata is not None:
nodata = numpy.nan if nodata == "nan" else float(nodata)
tilesize = scale * 256
if expr is not None:
tile, mask = expression(
url, x, y, z, expr=expr, tilesize=tilesize, nodata=nodata
)
else:
tile, mask = main.tile(
url, x, y, z, indexes=indexes, tilesize=tilesize, nodata=nodata
)
rtile, rmask = _postprocess(
tile, mask, rescale=rescale, color_formula=color_formula
)
if color_map:
color_map = get_colormap(color_map, format="gdal")
options = img_profiles.get(driver, {})
return (
"OK",
f"image/{ext}",
array_to_image(rtile, rmask, img_format=driver, color_map=color_map, **options),
)
def s1tile(
scene: str,
z: int,
x: int,
y: int,
scale: int = 1,
ext: str = "png",
bands: str = None,
rescale: str = None,
color_formula: str = None,
color_map: str = None,
) -> Tuple[str, str, BinaryIO]:
"""Handle tile requests."""
if not bands:
raise Exception("bands is required")
tilesize = scale * 256
tile, mask = sentinel1.tile(scene,
x,
y,
z,
bands=tuple(bands.split(",")),
tilesize=tilesize)
rtile, rmask = _postprocess(tile,
mask,
rescale=rescale,
color_formula=color_formula)
if color_map:
color_map = get_colormap(color_map, format="gdal")
driver = "jpeg" if ext == "jpg" else ext
options = img_profiles.get(driver, {})
return (
"OK",
f"image/{ext}",
array_to_image(rtile,
rmask,
img_format=driver,
color_map=color_map,
**options),
)
