09-26-2008
Wooow... Era.... thanks ...the solution you provided is working fine...
:-).... really a great help!
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Please help. Here is my problem. I have 9000 lines in file a and 500,000 lines in file b. For each line in file a I need to search file b and remove that line. I am currently using the grep -v command and loading the output into a new file. However, because of the size of file b this takes an... (4 Replies)
Discussion started by: mjs3221
4 Replies
2. Shell Programming and Scripting
Hi,
I have a file which computes fields number and some column produced "nan"
I would like to convert the "nan" value to 0 basically.
q=`echo $i $j |awk '{printf("%f",($2/($1+$2)))}'
The above is the command which I use for computation. However, I would
like to check if $1 and $2 is 0, it... (1 Reply)
Discussion started by: ahjiefreak
1 Replies
3. UNIX for Dummies Questions & Answers
Hi all,
Would like to know how I could search for a string 'xyz' but have the output show the line plus the line above and/or below all lines found.
eg. search for xyz from file containing:
abc
12345
asdf xyz asdfds
wwwww
kjkjkj
ppppp
kkkxyz
eeee
zzzzz
and the output to... (2 Replies)
Discussion started by: sammac
2 Replies
4. Shell Programming and Scripting
hello,
I have to write a script to run the other script inside it.So iam planning to write like this?
first check the perimissions of the file.
Alogorthim
----------
if(!filepermissions == execute)
then
echo" Permissions denined"
else
execute the script.
file name is : load_mf.sh... (1 Reply)
Discussion started by: rajkumar_g
1 Replies
5. Shell Programming and Scripting
Hi,
i have to insert the content of source.txt into the searched pattern of the file second.txt.
$cat source.txt
One
Two
Three
.
.
$cat second.txt
This is second file
pattern match start here
pattern match end here
end of the file
so the result will be like this (4 Replies)
Discussion started by: posix
4 Replies
6. Programming
Hi,
For a particular set of files, am trying to check if they are writable. i.e., checking whether they are having permissions greater than 755.
Am able to check this using the statement:
"if (os.path.isfile(FILE_PATH) and (os.stat(FILE_PATH).st_mode & 0777) == 0777):"
But the problem here... (0 Replies)
Discussion started by: arjun_arippa
0 Replies
7. Shell Programming and Scripting
Hi,
For a particular set of files, am trying to check if they are writable. i.e., checking whether they are having permissions greater than 755.
Am able to check this using the statement:
"if (os.path.isfile(FILE_PATH) and (os.stat(FILE_PATH).st_mode & 0777) == 0777):"
But the problem... (1 Reply)
Discussion started by: arjun_arippa
1 Replies
8. UNIX for Dummies Questions & Answers
Is there a way to check when the permissions for the file got changed in AIX
IS there some file which logs all these details?
Best regards,
Vishal (4 Replies)
Discussion started by: Vishal_dba
4 Replies
9. Shell Programming and Scripting
Hello All,
While searching for the question, I found some answers but my implementation is not giving expected output.
I have two files; one is sourcefile, other is named template.
What I want to do is to search each line in template, when found all columns, cut the matching line from source... (4 Replies)
Discussion started by: baris35
4 Replies
10. Shell Programming and Scripting
Hello,
I would like to know if it's a good practice to check the file permissions of the contents of a directory before moving them. For example:
mv -- "$directory"/* "$directory"/.* "$directory"/..?* "$destination"The variables $directory and $destination contain the path to an existing... (6 Replies)
Discussion started by: Cacializ
6 Replies
LEARN ABOUT PLAN9
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)