recipes.checknan Namespace Reference

Functions
def	CheckUVWForNan
def	CheckColsForNan

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Function Documentation

def recipes.checknan.CheckColsForNan	(		msname = '',
			fix = False,
			colnames = [],
			timeinterval = 1000
	)

Check for NaNs in specified columns of the MS.
ms : Name of MS. 
fix : False/True : If True, 
                         For data/corrected_data, set the corresponding value to zero and
                                   flag to True in the FLAG column
                         For weight, weight_spectrum, set the corresponding value to zero
                         For all other columns, do not fix/change anything.
colnames : ['data','weight'] :  MS Column names on which to check for NaNs
timeinterval : 1000 : timerange in seconds, to decide chunk sizes while iterating 
                               through the MS (remember, chunks of this size are read 
                               into python).
Alternate (recommended) way to flag NaNs from data columns :
    tflagdata(vis=ms, mode='clip')    

Definition at line 28 of file checknan.py.

def recipes.checknan.CheckUVWForNan	(		ms = '',
			fix = False
	)

script to check for NaN in uvw
if fix is true it will flag the row with nan data
and replace the uvw with 0
you can see how to do that to other columns too

Definition at line 4 of file checknan.py.