03-14-2009
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi all!
Well, you might have guessed it, I am looking for a way to control the return key under Solaris 8 and using telnet connections.
I notice a difference between Solaris and System V but I don't know exactly where to look for changes. The stty params are slightly different but as far as I... (2 Replies)
Discussion started by: nulnul7
2 Replies
2. Solaris
All,
After a power loss I went to power on our sun fire v120 that is running solaris 10 and now it will not boot. I tried power cycling it from the lom and pulling the cord but nothing works. All it does is after a power cycle it will start to boot and then start to spit out a bunch of hex... (2 Replies)
Discussion started by: jsandova
2 Replies
3. Shell Programming and Scripting
I met a problem in using grep -P.
There is a text file, temp.txt, whose content is:
dddd
abc
I ran the command:
grep -P "\s*abc" temp.txt
The result I expected is:
abc
But, the actual result is:
dddd
abc
Could anyone tell me what is wrong?
Thanks. (2 Replies)
Discussion started by: pankai
2 Replies
4. OS X (Apple)
I use rsync to keep a directory in synchronization betwen a Linux box with the hostname brutal and a Mac running OS X 10.5 (Leopard) with the hostname cooper. When I run the following command on my Linux machine:
rsync -avz --delete myuserid@cooper:/Library/WebServer/Documents... (2 Replies)
Discussion started by: scotbuff
2 Replies
5. UNIX for Dummies Questions & Answers
ok, there's a script i'm working on written in shell programming. #!/bin/sh
this script is written to spit out the contents of certain variables inside of it so the output looks something like this:
server01=89 server02=69 server03=89 server04=76
now, when i run this script from the... (4 Replies)
Discussion started by: SkySmart
4 Replies
6. Shell Programming and Scripting
Hi Experts
I am facing a weird issue while using print statement in awk. I have a text file with 3 fields shown below:
# cat f1
234,abc,1000
235,efg,2000
236,jih,3000
#
When I print the third column alone, I dont face any issue as shown below:
# awk '{print $3 }' FS=, f1
1000
2000... (5 Replies)
Discussion started by: guruprasadpr
5 Replies
7. UNIX for Dummies Questions & Answers
Hi I am getting absurd behavior of escape character in echos as followed:oinlcso003{arsadm} #: echo "\as shdd"
\as shdd
oinlcso003{arsadm} #: echo "Well, isn't that \"special\"?"
Well, isn't that "special"?
oinlcso003{arsadm} #: echo "Well, isn't that \special\?"
Well, isn't that \special\?... (3 Replies)
Discussion started by: nixhead
3 Replies
8. UNIX and Linux Applications
Why could whatprovides not lookup this info for over 10 minutes, but install could install that package in less than a minute?
$ yum whatprovides */lsb_release
Loaded plugins: langpacks, presto, refresh-packagekit, versionlock
^Cupdates/group 18% 3.1 kB/s | 360 kB 08:28 ETA ... (0 Replies)
Discussion started by: cokedude
0 Replies
9. UNIX for Advanced & Expert Users
Can someone please explain what's wrong with the command i use below?
tr -c '\11\12\40-\176' ' '< $TEMP_FILE > $TEMP_FILE2
The invalid character/s is replaced with two spaces, the string2 only have 1 space in it. Please help.
Sample output:
333243,333244c333243,333244
< ... (1 Reply)
Discussion started by: Jin_
1 Replies
10. UNIX for Dummies Questions & Answers
Hi there,
I am a bit puzzled by a weird behavior of Vi. I very simply would like to add increased numbers in some files. Since I have many thousands entries per file and many files, I would like to macro it in vi.
To do this, I enter the first number ("0001") on the first line and then yank... (4 Replies)
Discussion started by: hypsis
4 Replies
LEARN ABOUT OPENDARWIN
fitcircle
FITCIRCLE(l) FITCIRCLE(l)
NAME
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 > output.pg
Here, ox/oy is the lon/lat of the mean from fitcircle, and px/py is the lon/lat of the pole. The file output.pg 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)