Visit Our UNIX and Linux User Community

Full Discussion: Shell script - group by
Top Forums Shell Programming and Scripting Shell script - group by Post 302900198 by baladelaware73 on Monday 5th of May 2014 11:32:48 AM
Old 05-05-2014

Thanks, this is a great approach. It worked for me.
Test Your Knowledge in Computers #84
Difficulty: Easy
Windows 3.1, Windows 95, Windows 98, and Windows ME were all based on DOS.
True or False?

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

HELP! Group by in shell script (awk/sed?)

Hello, Could some expert soul please help me with this? I have following file format - task time abc 5 xyz 4 abc 5 xyz 3 ddd 10 ddd 2 I need to generate output as - task ... (5 Replies)
Discussion started by: sncoupons
5 Replies

2. Shell Programming and Scripting

Shell script to rename a group of files

Hello, I am having 1800 files in a directory with a specified format, like amms_850o_prod.000003uNy amms_850o_prod.000003u8x amms_850o_prod.000003taP amms_850o_prod.000003tKy amms_850o_prod.000003si4 amms_850o_prod.000003sTP amms_850o_prod.000003sBg amms_850o_prod.000003rvx... (12 Replies)
Discussion started by: atlantis
12 Replies

3. Shell Programming and Scripting

"group by" using shell script?

not sure if it's called "group by" , but what i'm going to do is like this: i have a file below: then i hope to get the result like this: : 3 : 1... (6 Replies)
Discussion started by: tiger2000
6 Replies

4. Solaris

su: No shell/No directory! if sys is added to a users secondary group

Hi, When I include a user to the secondary group "sys" GID=3 in Solaris 9 OS I'm not able to login. I get these error. The user home directory and the shell exists. Is this because of any security hardening. # su - agent No directory! # su agent su: No shell # grep taddm /etc/passwd... (14 Replies)
Discussion started by: agent001
14 Replies

5. Shell Programming and Scripting

Shell Script to ignore # and take corresponding user and group

Hi, I have a following file: role.IMPACT_USER.user=admin role.IMPACT_USER.user=dd12345 role.IMPACT_USER.user=ss76767 #role.IMPACT_USER.user=root #Description: Allow users to login in to Impact, start and stop service... (5 Replies)
Discussion started by: dbashyam
5 Replies

6. Shell Programming and Scripting

Help Linux Shell Group exists

I am having some problems when writing shell as follows: shell runs but returns no results echo "enter group name: " dir="/home" read group if id -g $group > /dev/null 2>&1 then echo "group exits" else echo... (6 Replies)
Discussion started by: kingkner
6 Replies

7. Shell Programming and Scripting

Help me to perform count & group by operation in shell scripting?

Hi All, I want to display the distinct values in the file and for each distinct value how may occurance or there. Test data: test1.dat 20121105 20121105 20121105 20121105 20121106 20121106 20121106 20121105 I need to display the output like Output (2 Replies)
Discussion started by: bbc17484
2 Replies

8. Shell Programming and Scripting

Shell Script to Group by Based on Multiple Fields in a file

Hi, I want to know if there is any simple approach to SUM a field based on group by of different fields for e.g. file1.txt contains below data 20160622|XXX1||50.00||50.00|MONEY|Plan1| 20160622|XXX1||100.00||100.00|MONEY|Plan1| 20160623|XXX1||25.00||25.00|MONEY|Plan1|... (3 Replies)
Discussion started by: cnu_theprince
3 Replies

9. Shell Programming and Scripting

Emulate group-by in shell script

Hello All, I saw this problem on one of the forum and solved it using group-by in oracle sql, though I am a bit curious to implement it using shell script : There is a file having number of operations : Opeation,Time-Taken operation1,83621 operation2,72321 operation3,13288... (11 Replies)
Discussion started by: mukulverma2408
11 Replies
FITCIRCLE(l)															      FITCIRCLE(l)

fitcircle - find mean position and pole of best-fit great [or small] circle to points on a sphere. SYNOPSIS
fitcircle [ xyfile ] -Lnorm [ -H[nrec] ] [ -S ] [ -V ] [ -: ] [ -bi[s][n] ] DESCRIPTION
fitcircle reads lon,lat [or lat,lon] values from the first two columns on standard input [or xyfile]. These are converted to cartesian three-vectors on the unit sphere. Then two locations are found: the mean of the input positions, and the pole to the great circle which best fits the input positions. The user may choose one or both of two possible solutions to this problem. The first is called -L1 and the second is called -L2. When the data are closely grouped along a great circle both solutions are similar. If the data have large dispersion, the pole to the great circle will be less well determined than the mean. Compare both solutions as a qualitative check. The -L1 solution is so called because it approximates the minimization of the sum of absolute values of cosines of angular distances. This solution finds the mean position as the Fisher average of the data, and the pole position as the Fisher average of the cross-products between the mean and the data. Averaging cross-products gives weight to points in proportion to their distance from the mean, analogous to the "leverage" of distant points in linear regression in the plane. The -L2 solution is so called because it approximates the minimization of the sum of squares of cosines of angular distances. It creates a 3 by 3 matrix of sums of squares of components of the data vectors. The eigenvectors of this matrix give the mean and pole locations. This method may be more subject to roundoff errors when there are thousands of data. The pole is given by the eigenvector corresponding to the smallest eigenvalue; it is the least-well represented factor in the data and is not easily estimated by either method. -L Specify the desired norm as 1 or 2, or use -L or -L3 to see both solutions. OPTIONS
xyfile ASCII [or binary, see -b] file containing lon,lat [lat,lon] values in the first 2 columns. If no file is specified, fitcircle will read from standard input. -H Input file(s) has Header record(s). Number of header records can be changed by editing your .gmtdefaults file. If used, GMT default is 1 header record. -S Attempt to fit a small circle instead of a great circle. The pole will be constrained to lie on the great circle connecting the pole of the best-fit great circle and the mean location of the data. -V Selects verbose mode, which will send progress reports to stderr [Default runs "silently"]. -: Toggles between (longitude,latitude) and (latitude,longitude) input/output. [Default is (longitude,latitude)]. Applies to geo- graphic coordinates only. -bi Selects binary input. Append s for single precision [Default is double]. Append n for the number of columns in the binary file(s). [Default is 2 input columns]. EXAMPLES
Suppose you have lon,lat,grav data along a twisty ship track in the file ship.xyg. You want to project this data onto a great circle and resample it in distance, in order to filter it or check its spectrum. Try: fitcircle ship.xyg -L2 project ship.xyg -Cox/oy -Tpx/py -S -pz | sample1d -S-100 -I1 > Here, ox/oy is the lon/lat of the mean from fitcircle, and px/py is the lon/lat of the pole. The file has distance, gravity data sampled every 1 km along the great circle which best fits ship.xyg SEE ALSO
gmt(1gmt), project(1gmt), sample1d(1gmt) 1 Jan 2004 FITCIRCLE(l)

Featured Tech Videos

All times are GMT -4. The time now is 09:55 AM.
Unix & Linux Forums Content Copyright 1993-2021. All Rights Reserved.
Privacy Policy