[R] What is cast telling me?

Hi, What is cast telling me when it says the following? Aggregation requires fun.aggregate: length used as default What is 'length'? I've taken a small subset of data and wondered what EnTime vs ExTime might look like. cast is kind enough to give me a table but I don't understand the

Re: [R] What is cast telling me?

That you have non-unique rows in your data (as identified by the identifying variables). - Original message - From: Mark Knecht markkne...@gmail.com To: r-help r-help@r-project.org Date: Wed, 8 Jul 2009 12:41:28 -0700 Subject: [R] What is cast telling me? Hi, What is cast telling

Re: [R] What is cast telling me?

On Wed, Jul 8, 2009 at 12:58 PM, rmail...@justemail.net wrote: That you have non-unique rows in your data (as identified by the identifying variables). Humm...OK - so I cast it with PL_Pos which has (in this data subset) a unique value for each experiment in this set. there are 25