GreenBankObservatory/dysh

`ushow` method not working

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Describe the bug
the ushow method is not working.
It seems the key and bintable arguments are swapped when calling udata().

How to Reproduce
This reproduces the error:

from dysh.fits import GBTFITSLoad
from dysh.util import get_project_testdata
filename = get_project_testdata() / "AGBT05B_047_01/AGBT05B_047_01.raw.acs/AGBT05B_047_01.raw.acs.fits"
sdf = GBTFITSLoad(filename)
sdf.ushow("SCAN")

However, this works:

sdf.ushow(0,"SCAN")

Loading using SDFITSLoad results in the same behavior.

Environment

  • Dysh version 0.3.0
  • Python version 3.9
  • OS RedHat7