oject.org
Cc:
Sent: Thursday, November 1, 2012 11:18 AM
Subject: [R] Select the last rows of when specific conditions are met.
Hello,
As I am new with R I am completely stuck in resolving a, no doubt, easy
problem.
I have a dataset with an enormous amount of rows and 17 columns. I need to
know per trial
I am so sorry for the lack of clarity.
I have a few subjects, every subject has done a number of trials and per
trial there is a measurement per millisecond (represented in the variable
tt), so every unique trial is represented in around 2500 rows.
An example of data would be:
Subj | Trial | t
ijk
To: r-help@r-project.org
Cc:
Sent: Thursday, November 1, 2012 11:18 AM
Subject: [R] Select the last rows of when specific conditions are met.
Hello,
As I am new with R I am completely stuck in resolving a, no doubt, easy
problem.
I have a dataset with an enormous amount of rows and 17 colum
I really don't understand what you want to achieve and how your data presents
itself.
You have several combinations of trial/subject which are unique?
There is a variable for each such combination that you want to test against
(tt)?
In addition you have data on each such combination (several set
Hello,
As I am new with R I am completely stuck in resolving a, no doubt, easy
problem.
I have a dataset with an enormous amount of rows and 17 columns. I need to
know per trial and subject number if another variable (tt) exceeds a
maximum. If this is true than the last 5000 rows of that specific
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