02-09-2010
Thank you so much for the reply Franklin52!
I've tested out the script, and it seems I've not explained the problem quite right. I'm sorry that I haven't described the problem well enough. Let me try it again.
Firstly, I think I confused people with the last "code" bit in my initial post. I don't want the values separated by a " | " line, just spaces will do. I suppose I got carried away in my explanation, they were just meant as dividers so people knew that I wanted the values separated. So, that being said, the first column of the output.dat file should be exactly like the first column of all the input files.
Ultimately, what I would like to do is put the output.dat file in gnuplot and tell it to "plot 'output.dat' u 1:2 w l" and then replot 'output.dat' u 1:3 w l", and so on (just to give you an idea of what I want to do with the data).
So I would like the first column of the output.dat to be an exact copy of the first column of any of my input files (the first column is always the same). The second column of output.dat is the difference between the 4th column of a_r01.dat and a_r02.dat, the third column is the difference between a_r02 and a_r03, fourth is a_r04 - a_r03, etc and so on until I run out of .dat files.
I hope I'm not coming off as too whiny, that's not my intent at all. I really do appreciate everyone's help around here, most of those that frequent these boards have coding skills I could only dream of!
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HISTO(1) General Commands Manual HISTO(1)
NAME
histo - compute 1-dimensional histogram of N data columns
SYNOPSIS
histo [-c][-p] xmin xmax nbins
histo [-c][-p] imin imax
DESCRIPTION
Histo bins columnular data on the standard input between the given minimum and maximum values. If three command line arguments are given,
the third is taken as the number of data bins between the first two real numbers. If only two arguments are given, they are both assumed
to be integers, and the number of data bins will be equal to their difference plus one. The bins are always of equal size.
The output is N+1 columns of data (for N columns input), where the first column is the centroid of each division, and each row corresponds
to the frequencies for each column around that value.
If the -c option is present, then histo computes the cumulative histogram for each column instead of the straight frequencies. The upper
value of each bin is printed also instead of the centroid. This may be useful in computing percentiles, for example. Values below the
minimum specified are still counted in the cumulative total.
The -p option tells histo to report the percentage of the total number of input lines rather than the absolute counts. In the case of a
cumulative total, this yields the percentile values directly. Values above the maximum are counted as well as values below in this case.
All input data is interpreted as real values, and columns must be white-space separated. If any value is less than the minimum or greater
than the maximum, it will be ignored unless the -c option is specified.
EXAMPLE
To count data values between -1 and 1 in 50 bins:
histo -1 1 50 < input.dat
To count frequencies of integers between 0 and 255:
histo 0 255 < input.dat
AUTHOR
Greg Ward
SEE ALSO
cnt(1), neaten(1), rcalc(1), rlam(1), tabfunc(1), total(1)
RADIANCE
9/6/96 HISTO(1)