adapt code to handle files from multiple datasets

[rfinn]

Filenames

• currently, pyappss_reduce requires the filename to be AGCXXXXX*.fits

pyapps_reduce 1993

• ALFALFA files are ALFALFA_XXX_spectra.fits
  • we could change the filenames, but we are thinking it's better to adapt the code to work with the files as is
• springob data - will have AGCXXXX*.fits, consistent with what convert generates
  • there is nothing that needs to be done for springbob data

Column names

• The syntax on the column names for the three datasets are different
• right now we are selecting columns based on position (assumes col 0 is flux e.g.)
• we want to figure out a way to handle the different column names
• we should change program that generates the springob fits files to match the filenames of the GBT data.

Survey	frequency	velocity	flux	baseline	weight
GBT	Frequency	Velocity	Flux	Baseline	Weight
ALFALFA	FREQUENCY	VHELIO	FLUX	BASELINE	WEIGHT
Springob	frequency	vhelio	fluxdensity	baseline	NA

[rfinn]

• change convert to make velocity -> vhelio
• katie will update her program to rename columns to match the GBT naming conventions and add a column 'weight'