Hi,
I use AIX (ksh) and Linux (bash) servers. I'm trying to do scripts to will run in both ksh and bash, and most of the time it works. But this time I don't get it in bash (I'm more familar in ksh).
The goal of my script if to read a "config file" (like "ini" file), and make various report.... (2 Replies)
Hi
I have a bash script where i need to push some values into an array and when finished, run a for loop against that array for example
myfile
sausages|meat
beef| meat
carrot| veg
...
...
for LINE in `cat myfile`; do
FOOD=`echo $LINE | cut -d\| -f1`
TYPE=`echo $LINE | cut... (4 Replies)
Hi,
I have a loop running until a variable L that is read previously in the full script. I'd like to grep some information in an input file at a line that contains the value of the loop parameter $i.
I've tried to use grep, but the problem is nothing is written in the FILE files. It seems grep... (5 Replies)
Hi all! I think someone might be able to solve my problem pretty easily.
I am trying to run a bash loop with 3 variables. I know how to do:
for var1 in `cat list1`; do for var2 in `cat list2`; do for var3 in `cat list3`; command var1 var2 > var3; done; done; done
However, this will run all... (4 Replies)
Dear mentors, I just need little explanation regarding for loop to give input to awk script
for file in `ls *.txt |sort -t"_" -k2n,2`; do
awk script $file
done
which sorts file in order, and will input one after another file in order to awk script
suppose if I have to input 2 or... (4 Replies)
Hello,
I'm trying to read the variable "pause" from a for loop without luck. The function is dependant on the outcome of the test within the loop. If i run this, pause is always 0 within the function. Any ideas?
Thanks.
pause=0
users=1
(for (( ; ; ))
do
speed=`cat speed.log`
... (7 Replies)
Hi,
I'm trying to get the number of files inside same kind of folders on each disks and assigning each values in to a variable named with same folder and disk name so that it'll be easy for me to identify each time.But somehow I'm not able to assign those values in that specific name variable... (1 Reply)
In the below for loop, I extract a variable $d which is an id that will change each time. The bash executes the problem that I am having is that p (after the done) is the path with the extracted $d. However, I can not use it in subsequent loops as it is not reconized. I have been trying to change... (3 Replies)
In the else of the main if condition .
else
set lnk = $(readlink -f <path> | cut -d '/' -f7)
echo "$lnk"
if ]
When I run the above on command line , the execution seems to be fine and I get the desired output. But when I try to assign it to a variable within a loop... (12 Replies)
Cope sample1: test.sh
i=0
echo " Outside loop i = $i "
while
do
i=$(( $i + 1))
echo "Inside loop i = $i "
done
echo " Out of loop i is : $i "
When run output :
Outside loop i = 0
Inside loop i = 1
Inside loop i = 2
Inside loop i = 3
Inside loop i = 4
Inside loop i = 5
Inside... (8 Replies)
Discussion started by: Adarshreddy01
8 Replies
LEARN ABOUT DEBIAN
grdtrend
GRDTREND(l) GRDTREND(l)
NAME
grdtrend - Fit and/or remove a polynomial trend in a grd file
SYNOPSIS
grdtrend grdfile -Nn_model[r] [ -Ddiff.grd ] [ -Ttrend.grd ] [ -V ] [ -Wweight.grd ]
DESCRIPTION
grdtrend reads a 2-D gridded file and fits a low-order polynomial trend to these data by [optionally weighted] least-squares. The trend
surface is defined by:
m1 + m2*x + m3*y + m4*x*y + m5*x*x + m6*y*y + m7*x*x*x + m8*x*x*y + m9*x*y*y + m10*y*y*y.
The user must specify -Nn_model, the number of model parameters to use; thus, -N4 fits a bilinear trend, -N6 a quadratic surface, and so
on. Optionally, append r to the -N option to perform a robust fit. In this case, the program will iteratively reweight the data based on a
robust scale estimate, in order to converge to a solution insensitive to outliers. This may be handy when separating a "regional" field
from a "residual" which should have non-zero mean, such as a local mountain on a regional surface.
If data file has values set to NaN, these will be ignored during fitting; if output files are written, these will also have NaN in the same
locations.
No space between the option flag and the associated arguments.
grdfile
The name of a 2-D binary grd file.
-N [r]n_model sets the number of model parameters to fit. Prepend r for robust fit.
OPTIONS
No space between the option flag and the associated arguments.
-D Write the difference (input data - trend) to the file diff.grd.
-T Write the fitted trend to the file trend.grd.
-V Selects verbose mode, which will send progress reports to stderr [Default runs "silently"].
-W If weight.grd exists, it will be read and used to solve a weighted least-squares problem. [Default: Ordinary least-squares fit.] If
the robust option has been selected, the weights used in the robust fit will be written to weight.grd.
REMARKS
The domain of x and y will be shifted and scaled to [-1, 1] and the basis functions are built from Legendre polynomials. These have a
numerical advantage in the form of the matrix which must be inverted and allow more accurate solutions. NOTE: The model parameters listed
with -V are Legendre polynomial coefficients; they are not numerically equivalent to the m#s in the equation described above. The descrip-
tion above is to allow the user to match -N with the order of the polynomial surface.
EXAMPLES
To remove a planar trend from hawaii_topo.grd and write result in hawaii_residual.grd, try
grdtrend hawaii_topo.grd -N3 -Dhawaii_residual.grd
To do a robust fit of a bicubic surface to hawaii_topo.grd, writing the result in hawaii_trend.grd and the weights used in
hawaii_weight.grd, and reporting the progress, try
grdtrend hawaii_topo.grd -Nr10 -Thawaii_trend.grd -Whawaii_weight.grd -V
SEE ALSO gmt(1gmt), grdfft(1gmt), grdfilter(1gmt)
1 Jan 2004 GRDTREND(l)