Thank you very much -- this was very helpful for differentiating among
the aggregating methods!
Matt
On Wed, Jan 14, 2009 at 3:42 PM, Marc Schwartz
wrote:
> on 01/14/2009 02:51 PM Matthew Pettis wrote:
>> I have a specific question and a general question.
>>
>> Specific Question: I want to do an
on 01/14/2009 02:51 PM Matthew Pettis wrote:
> I have a specific question and a general question.
>
> Specific Question: I want to do an analysis on a data frame by 2 or more
> class variables (i.e., use 2 or more columns in a dataframe to do
> statistical classing). Coming from SAS, I'm used to
> General Question: I assume the answer to the specific question is dependent
> on my understanding list objects and accessing their attributes. Can anyone
> point me to a good, throrough treatment of these R topics? Specifically how
> to read and interpret the output of the str(), and attributes
On Jan 14, 2009, at 4:14 PM, David Winsemius wrote:
On Jan 14, 2009, at 3:56 PM, Matthew Pettis wrote:
I have a specific question and a general question.
Specific Question: I want to do an analysis on a data frame by 2 or
more class variables (i.e., use 2 or more columns in a dataframe to
On Jan 14, 2009, at 3:56 PM, Matthew Pettis wrote:
I have a specific question and a general question.
Specific Question: I want to do an analysis on a data frame by 2 or
more class variables (i.e., use 2 or more columns in a dataframe to do
statistical classing). Coming from SAS, I'm used t
I have a specific question and a general question.
Specific Question: I want to do an analysis on a data frame by 2 or
more class variables (i.e., use 2 or more columns in a dataframe to do
statistical classing). Coming from SAS, I'm used to being able to
take a data set and have the output of
I have a specific question and a general question.
Specific Question: I want to do an analysis on a data frame by 2 or more
class variables (i.e., use 2 or more columns in a dataframe to do
statistical classing). Coming from SAS, I'm used to being able to take a
data set and have the output of th
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