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HI Raaga,
Thanks for your help, Here the meaning of 3 angstrom is that I have to rebin the data in a step of 3 like 1, 4, 7, 10,.....and so on

Dear Sir,
I am new to awk. I have started learning it and I don't have deep knowledge of it. I am so sorry to say that I haven't try any thing as I m new to it.

Dear friends,
I have the data in the following format with 4 columns

1.000000000000000E+01 -8.8867E+01 -8.8867E+01 -8.8867E+01
1.100000000000000E+01 -8.8867E+01 ...

Dear Friends,
I have a data file in the following format having two columns($1 is wavelength , $2 is Flux) and more then 5000 rows. I want to find the maximum value of flux in...

Dear all,
I want to find the spectral Index from the reduced spectra of various molecular bands like TiO (band width 7042 angstrom-7046 angstrom) in the in IRAF. I have reduced the...

Dear all,
I have the data in the following format. I want to do average of each NR= 5 (rows) for all the 3 ($1,$2, $3) columns and want to print average result in another file in the same...