Re: 100 rows and 100 columns random matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg123449] Re: 100 rows and 100 columns random matrix
- From: Bob Hanlon <hanlonr357 at gmail.com>
- Date: Thu, 8 Dec 2011 05:21:24 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201112071115.GAA04259@smc.vnet.net>
data = RandomReal[{0, 1}, {100, 100}]; Count[data, _?(# < 0.5 &), {2}] 5054 Count[data, _?(# >= 0.5 &), {2}] 4946 % + %% == 100^2 True Bob Hanlon On Wed, Dec 7, 2011 at 6:15 AM, Sahar Nazemi <nazemisahar at yahoo.com> wrote: > 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