Re: 100 rows and 100 columns random matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg123468] Re: 100 rows and 100 columns random matrix
- From: Ulrich Arndt <ulrich.arndt at data2knowledge.de>
- Date: Thu, 8 Dec 2011 05:25:06 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201112071115.GAA04259@smc.vnet.net>
Hi,
in count you need to specify the levelspec if you want to check an element.
Count[mat, element_ /; element <= 0.5, 2]
Count[mat, element_ /; element > 0.5, 2]
Ulrich
Am 07.12.2011 um 12:15 schrieb Sahar Nazemi:
> Hello
> I'm a student of geology who works with
> Mathematica sofware .I'm learning it by myself recently.
> I have a question and will appreciate if you
> help me in this regard.
> I have created a 100 rows and 100 columns random
> matrix which its elements are between 0 to 1(for example it consists of
> 0.687,...).
> Now I want to know how many of these elements
> are in the range of "0 to 0.5" and how many are in the range of
> "0.5 to 1".
> I also use "Count" function as below
> but it doesnt answer:
> Count[a,{0,0.5}]
> ("a" is my random matrix).
> Regards
> Sahar Nazemi
- References:
- 100 rows and 100 columns random matrix
- From: Sahar Nazemi <nazemisahar@yahoo.com>
- 100 rows and 100 columns random matrix