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# 1  
Old 04-10-2017
awk spitting columns
if i have +2, i want this to be + 2 as separate columns. Doing this for a large column so I cannot do it manually.
# 2  
Old 04-10-2017
What is the reason for doing this?

Do you want to do this only when + is followed by a single digit 2 in a column; or anytime + is followed by a string whose 1st character is 2.

What have you tried to solve this on your own?

What operating system and shell are you using?

What is the format of your "column" and the file in which it is located?

Please show us a sample input file (in CODE tags) and the corresponding output file (in CODE tags) that you want to produce from that sample input.
# 3  
Old 04-10-2017
Code:
cat maser_neg_test.txt | awk '{print NR, $0}' | awk '{print $1, $2, ((15 * $3) + ((1/4) * $4) + ((1/240) * $5)), (($6)+ ($7/60) + ($8/3600) ,$9}' | awk '{printf "%s %-15s %-10s %-10s %-6s\n", $1, $2, $3, $4 , $5}' > maser_neg_test2.txt

is my code, which transforms

Code:
RXSJ00001+0523   00 00 11.78  +05 23 17.4  11992  2016-02-12   51.3   3  10.9  10631  13365
    KUG2358+330   00 00 58.10  +33 20 38.0  12921  2012-11-17   36.5   8   4.0  11461  14395
0001233+4733537   00 01 23.30  +47 33 53.7   5237  2010-11-02   39.5  10   3.6   3848   6639   3.5   6358   9196
       NGC-7805   00 01 26.76  +31 26 01.4   4850  2006-01-05   43.8   5   6.0   3464   6248   5.6   5968   8799

into

Code:
1 RXSJ00001+0523      0.04908      5.38817    11992 
2 KUG2358+330     	     0.24208     33.3439    12921 
3 0001233+4733537   0.34708      47.5649     5237  
4 NGC-7805        	     0.36150     31.4337     4850

but my research advisor noted that in my conversion of

Code:
dec:
1*(hr) = degree_1
(1/60) * (min) = degree_2
(1/3600) * (sec) = degree_3

Code:
degree_1 + degree_2 + degree_3 = dec (degrees)

which is the data +05 23 17.4 as hr min sec, that just adding them when the sign is negative does not combine these right. So i'm trying to pull out the sign before doing my calculations and then re-apply it
Last edited by Don Cragun; 04-10-2017 at 07:45 PM.. Reason: Add CODE and ICODE tags.
# 4  
Old 04-10-2017
There is no need for cat in this pipeline and there is no need for two of your three invocations of awk.

There is no occurrence of the string +2 in your sample input and there is nothing wrong with your calculation as long as the leading character in hour field in your input file is a plus sign. But, your calculation would be wrong if the leading character in that field was a minus sign (which does not appear in your sample input). If we assume that the 1st character in the hour field will ALWAYS either be a plus sign (+) or a minus sign (-), the following seems to do what I would guess you were trying to do:
Code:
awk '{	printf("%s %-15s %-10s %-10s %-6s\n",
	    NR, $1, $2 * 15 + $3 / 4 + $4 / 240,
	    (substr($5, 1, 1) == "-" ? -1 : 1) * \
		(substr($5, 2) + $6 / 60 + $7 / 3600),
	    $8)
}' maser_neg_test.txt > maser_neg_test2.txt

If we add a couple of timestamps with negative hours to your sample maser_neg_test.txt for testing:
Code:
RXSJ00001+0523   00 00 11.78  +05 23 17.4  11992  2016-02-12   51.3   3  10.9  10631  13365
    KUG2358+330   00 00 58.10  +33 20 38.0  12921  2012-11-17   36.5   8   4.0  11461  14395
0001233+4733537   00 01 23.30  +47 33 53.7   5237  2010-11-02   39.5  10   3.6   3848   6639   3.5   6358   9196
       NGC-7805   00 01 26.76  +31 26 01.4   4850  2006-01-05   43.8   5   6.0   3464   6248   5.6   5968   8799
extra	2 3 4 -05 59 60 8 9 10 11 12 13 14 15 16 17
extra2	2 3 4 -10 30 00 8 9 10 11 12 13 14 15 16 17

the above code produces the following output in maser_neg_test2.txt:
Code:
1 RXSJ00001+0523  0.0490833  5.38817    11992 
2 KUG2358+330     0.242083   33.3439    12921 
3 0001233+4733537 0.347083   47.5649    5237  
4 NGC-7805        0.3615     31.4337    4850  
5 extra           30.7667    -6         8     
6 extra2          30.7667    -10.5      8

which I assume is appropriate output for that input.
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