a few days back I had asked for help creating an [x,y,z] dims piddle
where every element was a random integer between 0 and 255. A couple
of suggestions set me off to learn dummy(), and I also learned the
correct use of random() (thanks, Daniel and Chris). Today, I figured
out a way to make any dimension piddle filled with random integers
between any two integers <max> and <min>.
$a = (( (zeroes( <dim> [, <dim> ..] ))->random * ( <max> - <min> + 1
)) + <min> )->floor
The thing is, the above works whether I use zeroes or ones, which, I
am guessing is because internally PDL::new_from_specification is being
used to create a template for the piddle.
perldl> $a = (( (zeroes( 5, 5, 3 ))->random * ( 1000 - 500 + 1 ))
+ 500 )->floor
perldl> p $a
perldl> p $a
[
[
[ 759 780 741 581 828]
[1000 521 826 706 904]
[ 583 972 852 812 987]
[ 680 545 512 620 716]
[ 588 737 659 641 919]
]
[
[664 535 829 972 524]
[970 728 859 775 849]
[783 511 909 737 952]
[746 602 817 625 824]
[557 702 735 529 934]
]
[
[839 814 908 984 590]
[518 761 661 877 523]
[904 728 810 528 820]
[530 576 850 639 941]
[831 874 662 965 601]
]
]
Not a big thing for you seasoned pros, but very exciting for a
beginner like me. I have added the above to the cookbook at
http://sourceforge.net/apps/mediawiki/pdl/index.php?title=Create_a_piddle_of_any_dimensions_with_every_element_a_random_integer_between_MAX_and_MIN
--
Puneet Kishor http://www.punkish.org
Carbon Model http://carbonmodel.org
Charter Member, Open Source Geospatial Foundation http://www.osgeo.org
Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor
Nelson Institute, UW-Madison http://www.nelson.wisc.edu
-----------------------------------------------------------------------
Assertions are politics; backing up assertions with evidence is science
=======================================================================
_______________________________________________
Perldl mailing list
[email protected]
http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
