In Response To 'Re: normalization of a function'
Thank you for the reply.
The command worked fine for small set of data but the the mathemetica kept running for a long time ( 3 hr ) without any error message for my test file with 5000 data sets; the data were in two columns.So, I have not got output in this case.
I also used the command "FilePrint" to check whether the file was corrupted or not; but the 5000 data set looked fine.
Interestingly, if the condition ( A + B + F + G + H + J == 1) was not set, the command worked.But, I need that condition.
Thank you for your help,