get_frame() and get_plane() give different results when specifying a channel other than c=0

[zindy]

Hello,

Could you kindly explain the difference between get_frame() and get_plane()? And moving forward, which one are you going to keep?

I'm asking because on one of my confocal stacks, lif_image.get_frame(z=60, c=1) returns the right plane and channel image, whereas lif_image.get_plane(requested_dims={3:70}, c=1) returns an image for channel 0, no matter which value I pass to c in get_plane()

My image shows this metadata in FIJI:

Name	value
BitsPerPixel	16
DimensionOrder	XYCZT
IsInterleaved	false
IsRGB	false
LittleEndian	true
PixelType	uint16
Series 0 Name	ctrl 1
SizeC	2
SizeT	1
SizeX	2048
SizeY	2048
SizeZ	140

So, I came-up with my own as_array() which I saw is very similar to the one @haesleinhuepf wrote in #42

def as_array(lif_image, t=0, c=0, m=0):
    """Returns a LifImage as a numpy array for a given time-point, channel and mosaic image."""

    frames = [lif_image.get_frame(z,t,c,m) for z in range(lif_image.dims.z)]
    return np.asarray(frames)

Cheers,
Egor