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Full Discussion: Selecting array values
Top Forums Programming Selecting array values Post 302495411 by kristinu on Thursday 10th of February 2011 06:38:42 AM
Old 02-10-2011
Selecting array values
I have two arrays DIST(1:NCOF) and X(1:NX)

Code:
Let NCOF = 5 and NX = 15, with

DIST = [10 20 30 40 50] and
X = [ 30.3 40.4 50.3 60.6 70.4 80.5 90.3 100.7 110.4 120.7 130.6 140.5 150.5 160.2 170.4]

I want to create an array that puts a zero if DIST is outside the region in X, otherwise putting 1.

In this example I should get

Code:
RES =  [0 0 0 1 1]
Using DIST = [150 160 170 180 190] would give RES = [1 1 1 0 0]

The values in DIST will be consecutive and they will get out of range from only one side, either to the right or to the left side of DIST.
This can help to doing the check more efficiently, than checking every value.
Last edited by kristinu; 02-10-2011 at 07:58 AM..
 

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LEARN ABOUT SUSE

gsl-randist

GSL-RANDIST(1)						      General Commands Manual						    GSL-RANDIST(1)

NAME

       gsl-randist - generate random samples from various distributions

SYNOPSYS

       gsl-randist seed n DIST param1 param2 [..]

DESCRIPTION

       gsl-randist  is a demonstration program for the GNU Scientific Library.	It generates n random samples from the distribution DIST using the
       distribution parameters param1, param2, ...

EXAMPLE

       Here is an example.  We generate 10000 random samples from a Cauchy distribution with a width of 30 and histogram them over the range  -100
       to 100, using 200 bins.

	    gsl-randist 0 10000 cauchy 30 | gsl-histogram -100 100 200 > histogram.dat

       A  plot	of  the  resulting histogram will show the familiar shape of the Cauchy distribution with fluctuations caused by the finite sample
       size.

	    awk '{print $1, $3 ; print $2, $3}' histogram.dat | graph -T X

SEE ALSO

       gsl(3), gsl-histogram(1).

AUTHOR

       gsl-randist was written by James Theiler and Brian Gough.  Copyright 1996-2000; for copying conditions see the GNU General Public Licence.

       This manual page was added by the Dirk Eddelbuettel <edd@debian.org>, the Debian GNU/Linux maintainer for GSL.

GNU
																    GSL-RANDIST(1)
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