Re: [R] efficiently replacing values in a matrix

From: Jim Lemon <jim_at_bitwrit.com.au>
Date: Thu, 17 Apr 2008 20:00:13 +1000

Rolf Turner wrote:
> On 17/04/2008, at 9:33 AM, Charles C. Berry wrote:
>
> <snip>
>

>>I'll lay odds that Matthew's 'matrix' is actually a data.frame, and  
>>I'll not be surprised if the columns are factors.

>
>
> <snip>
>
> I suspect that you're right.
>
> ***Why*** can't people distinguish between data frames and matrices?
> If they were the same <expletive deleted> thing, there wouldn't be two
> different terms for them, would there?
>
Why Rolf, haven't you ever heard of Whorf's hypothesis? Because R users are surrounded by rectangular wads of data, it's surprising that we don't have hundreds of words for the same thing.

Jim



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