11-03-2008
sorry for that..
assume that we have sampled value in different time:
file1: router1.dat
t load
60 10.26
120 11.52
180 11.52
240 12.00
where t(1)=60, y(1)=10.26, t(2)=120, y(2)=11.52, etc.
file2: sender1.dat
t estimated value
100 18.18
200 8.33
300 9.21
400 6.99
where t(1)=100, y(1)=18.18, t(2)=200, y(2)=8.33, etc.
in this case, i need to calculate the interpolation value, which is
y = y(i) + {(y(i+1) - y(i)) (t - t(i))} / {t(i+1) - t(i)}
as shown below
y = 10.26 + ({(11.52 - 10.69)}30)/60...
I hope, it doesn't give you any misunderstanding this time. I know, I should make it put an example at the first time...
Quote:
Originally Posted by
otheus
Terribly sorry, but I don't get it. I don't know what you mean by y(i) or t(i). Maybe you can give an example. Again, we'll have to change this formula to i and i-1 instead of i+1 and i.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello Guys,
I am refering to this great forum once again for help.
After various attempts at this, I am still failing to obtain the desire effect.
I have to write a perl script which:
1- reads two values from the user (e.g name & passwd)
2- check each value against a file containing the... (7 Replies)
Discussion started by: bionicfysh
7 Replies
2. Shell Programming and Scripting
Dear Collegue
Do anybody help me to convert this AWK script to Perl script
{
for (i = 2; i <= length ($0); i++) {
x = substr($0, i , 1)
if (c > 0) {
b = b x
if (x == "(") c++
... (2 Replies)
Discussion started by: jaganadh
2 Replies
3. Shell Programming and Scripting
Hi All,
My Input file looks like below:
Input:
100,200,300
$fw=`head -1 test.csv | awk -F, '{print \$1}'`;
$fw="'$fw"
$fw="$fw'"
print $fw
Output:'100'
I want the first field to be printed in single quotes ('') like above.
I could get the ouptput but the problem is single... (6 Replies)
Discussion started by: kmkbuddy_1983
6 Replies
4. Shell Programming and Scripting
I have a script to get server information i wrote in perl because i would like to learn it (and I use it for work). It works great, however i would like to know if there is a good way to reduce the following line.
Sean (6 Replies)
Discussion started by: insania
6 Replies
5. Shell Programming and Scripting
awk -F "|" '{print $2$3$4 upto $30}' file1 > file2
Same logic, i want to write it in perl
I tried
#!/bin/usr/perl
my $line;
open FH, "<file1" or die " Can't open file $!";
open FH1, ">file2" or die "Can't open file ";
while (<FH1>){
$line = (split /\|/,$_);
print FH2 $line;... (3 Replies)
Discussion started by: pritish.sas
3 Replies
6. Shell Programming and Scripting
DEAR ALL,
i am using following command to fetch some records from more then 50000 files... command is taking more time ....
can i have perl command for the same...( i am New to perl )
awk -F "|" '{ if($4==3244898 && $5==5000185) print $66}' *.DATA (2 Replies)
Discussion started by: arvindng
2 Replies
7. Shell Programming and Scripting
Hi Everyone,
cat 1.txt
a <abc
b vfff
c 000>
d 4444
the output is:
<abcvfff000>
by using perl or awk, can get the value betwee "<abc" and ">", assume 1.txt has lots of those tags, so the output can filter out all those values.
Please advice.
Thanks (4 Replies)
Discussion started by: jimmy_y
4 Replies
8. Shell Programming and Scripting
Hello folks.
After awk, i have decided to start to learn perl, and i need some help.
I have following output :
1 a
1 b
2 k
2 f
3 s
3 p
Now with awk i get desired output by issuing :
awk ' { a = a FS $2 } END { for ( i in a) print i,a }' input
1 a b
2 k f
3 s p
Can... (1 Reply)
Discussion started by: Peasant
1 Replies
9. Shell Programming and Scripting
Hello,
I searched online; it seems that perl use $NR as NR in awk; however it does not work for me. For example, how to re-write the following awk using perl:
awk '{ print NR}' inputfile---------- Post updated at 01:55 PM ---------- Previous update was at 12:49 PM ----------
I found... (2 Replies)
Discussion started by: littlewenwen
2 Replies
10. UNIX for Beginners Questions & Answers
Hello. I'm trying to convert an awk script I wrote to perl (which I just started self-teaching). I tried the a2p command but I couldn't make sense of most of it.
Here was the awk code:
BEGIN{
FS = ","
print "NAME\tLOW\tHIGH\tAVERAGE"
a=0
}
{
if(a==0){
a+=1 (1 Reply)
Discussion started by: Eric7giants
1 Replies
IGAWK(1) Utility Commands IGAWK(1)
NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO
gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)