ERROR 4: /gdata/lu75i1.tif: No such file or directory
gdalinfo failed - unable to open '/gdata/lu75i1.tif'.

/opt/conda/lib/python3.12/site-packages/osgeo/gdal.py:311: FutureWarning: Neither gdal.UseExceptions() nor gdal.DontUseExceptions() has been explicitly called. In GDAL 4.0, exceptions will be enabled by default.
  warnings.warn(

246:(0, 0, 0, 255)
247:(0, 0, 0, 255)
248:(0, 0, 0, 255)
249:(0, 0, 0, 255)
250:(0, 0, 0, 255)
251:(0, 0, 0, 255)
252:(0, 0, 0, 255)
253:(0, 0, 0, 255)
254:(0, 0, 0, 255)
255:(0, 0, 0, 0)

Help on method ReadAsArray in module osgeo.gdal:

ReadAsArray(xoff=0, yoff=0, win_xsize=None, win_ysize=None, buf_xsize=None, buf_ysize=None, buf_type=None, buf_obj=None, resample_alg=0, callback=None, callback_data=None) method of osgeo.gdal.Band instance
    Read a window of this raster band into a NumPy array.

    Parameters
    ----------
    xoff : float, default=0
       The pixel offset to left side of the region of the band to
       be read. This would be zero to start from the left side.
    yoff : float, default=0
       The line offset to top side of the region of the band to
       be read. This would be zero to start from the top side.
    win_xsize : float, optional
         The number of pixels to read in the x direction. By default,
         equal to the number of columns in the raster.
    win_ysize : float, optional
         The number of rows to read in the y direction. By default,
         equal to the number of bands in the raster.
    buf_xsize : int, optional
         The number of columns in the returned array. If not equal
         to ``win_xsize``, the returned values will be determined
         by ``resample_alg``.
    buf_ysize : int, optional
         The number of rows in the returned array. If not equal
         to ``win_ysize``, the returned values will be determined
         by ``resample_alg``.
    buf_type : int, optional
         The data type of the returned array
    buf_obj : np.ndarray, optional
         Optional buffer into which values will be read. If ``buf_obj``
         is specified, then ``buf_xsize``/``buf_ysize``/``buf_type``
         should generally not be specified.
    resample_alg : int, default = :py:const:`gdal.GRIORA_NearestNeighbour`.
         Specifies the resampling algorithm to use when the size of
         the read window and the buffer are not equal.
    callback : function, optional
        A progress callback function
    callback_data: optional
        Optional data to be passed to callback function

    Returns
    -------
    np.ndarray

    Examples
    --------
    >>> import numpy as np
    >>> ds = gdal.GetDriverByName("GTiff").Create("test.tif", 4, 4, eType=gdal.GDT_Float32)
    >>> ds.WriteArray(np.arange(16).reshape(4, 4))
    0
    >>> band = ds.GetRasterBand(1)
    >>> # Reading an entire band
    >>> band.ReadAsArray()
    array([[ 0.,  1.,  2.,  3.],
           [ 4.,  5.,  6.,  7.],
           [ 8.,  9., 10., 11.],
           [12., 13., 14., 15.]], dtype=float32)
    >>> # Reading a window of a band
    >>> band.ReadAsArray(xoff=2, yoff=2, win_xsize=2, win_ysize=2)
    array([[10., 11.],
           [14., 15.]], dtype=float32)
    >>> # Reading a band into a new buffer at higher resolution
    >>> band.ReadAsArray(xoff=0.5, yoff=0.5, win_xsize=2.5, win_ysize=2.5, buf_xsize=5, buf_ysize=5)
    array([[ 0.,  1.,  1.,  2.,  2.],
           [ 4.,  5.,  5.,  6.,  6.],
           [ 4.,  5.,  5.,  6.,  6.],
           [ 8.,  9.,  9., 10., 10.],
           [ 8.,  9.,  9., 10., 10.]], dtype=float32)
    >>> # Reading a band into an existing buffer at lower resolution
    >>> band.ReadAsArray(buf_xsize=2, buf_ysize=2, buf_type=gdal.GDT_Float64, resample_alg=gdal.GRIORA_Average)
    array([[ 2.5,  4.5],
           [10.5, 12.5]])
    >>> buf = np.zeros((2,2))
    >>> band.ReadAsArray(buf_obj=buf)
    array([[ 5.,  7.],
           [13., 15.]])

Help on method ReadRaster in module osgeo.gdal:

ReadRaster(xoff=0, yoff=0, xsize=None, ysize=None, buf_xsize=None, buf_ysize=None, buf_type=None, buf_pixel_space=None, buf_line_space=None, resample_alg=0, callback=None, callback_data=None, buf_obj=None) method of osgeo.gdal.Band instance