Hi all --
I have written some code for a group of statistics students who, until now,
have relied only on the GUI for their exercises and assignments. In order
to make the code as simple as possible for them to adapt to their needs for
the next assignment I start by assigning the data set to a new data frame:
data.to.use <- original.data.set
This way I assume they could just change "original.data.set" at the
beginning of the code so they need not worry about changing the data frame
from which variables are extracted throughout the code. When they run the
code it produces all the desired plots, tables, and outputs but when they
type "data.to.use" at the command prompt most (but not all) seem to get
various errors and S-PLUS goes on to freeze or shut down in many
cases. Some examples are below.
Problem: internal error: trying to set internal exit action in frame 0,
must be between 1 and 6
Error during wrapup: Invalid frame number (0) in set_frame
Engine connection failure - shutting down S-PLUS recommended
They are working in 6.2 or 7.0. Of course, the script works perfectly on
my machine on 2000, 6.2 and 7.0. Can anyone shed any light on this
problem? Me and 30 bewildered students would appreciate any insight.
Thanks as always,
Sarah
|