Re: Any better way for finding frequencies of list entries?

• To: mathgroup at smc.vnet.net
• Subject: [mg26976] Re: [mg26923] Any better way for finding frequencies of list entries?
• From: Matt.Johnson at autolivasp.com
• Date: Tue, 30 Jan 2001 03:38:25 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

```Needs["Statistics`DataManipulation`"]
Off[General::spell, General::spell1]
list = RealDigits[N[Pi, 60]][[1]];
Transpose[{Range[0, 9], CategoryCounts[list, Range[0, 9]]}]

{{0, 3}, {1, 5}, {2, 6}, {3, 9}, {4, 6}, {5, 6}, {6, 4}, {7, 5}, {8, 6}, {9,
10}}

-matt

Domi <doud25 at caramail.com> on 01/26/2001 09:30:01 PM

cc:
Subject: [mg26976]  [mg26923] Any better way for finding frequencies of list entries?

Hello Mathematica experts out there,

I want to determine the frequencies of the entries in a list of integers

For example, the following piece of code seems to work with Pi:
pi = Join
[ {3}, ToExpression[Characters[StringDrop[ToString[N[Pi, 57]], {1,
2}]]]]
Table[{i, Count[pi, i]}, {i, 0, 9}]

{{0, 3}, {1, 5}, {2, 6}, {3, 9}, {4, 4}, {5, 6}, {6, 4}, {7, 5},
{8, 6}, {9,   9}}

Question: Is there a more elegant way to do that?

Regards from Domi.

```

• Prev by Date: Re: Any better way for finding frequencies of list entries?
• Next by Date: Re: i need help
• Previous by thread: Re: Any better way for finding frequencies of list entries?
• Next by thread: Re: Re: Any better way for finding frequencies of list entries?