pdbzerofill - fills a columns with zeros (or other value) when blank

pdbzerofill fills a row that is missing in a series of rows with a numerical increasing (frequently a timestamp) index This is a sister program to pdbensure which removes rows with missing data instead of creating them.

Example input (myblanks.fsdb):

#fsdb -F t col1:l two:a andthree:d
2	key1	42.0
6	key2	
10	    90.2

Example command usage

$ pdbzerofill -c two andthree -v xxx -b 2 -t col1

Example output

#fsdb -F t col1:l two andthree:d
2	key1	42.0
4	xxx	xxx
6	key2	
8	xxx	xxx
10		90.2