Hello
I have a dataframe, at least I think I created it by using:
DELTA <- as.data.frame(DELTA)
The dataframe has 2 columns made of numbers("data" and "delta")
If I use DELTA$delta + 12
I get a sequence of NA Warning message:
"+" not meaningful for factors in: Ops.factor(DELTA$deltatemp, 12)
What does this mean? Can you explain me please why I can not make this
simple calculation? And what can I do to the calculation?
further information:
mode(DELTA)
[1] "list"
DELTA$delta
.....
[685] 6.04 7.84 8.01 8.43 6.6 6.33 8.42 8.86 10.25 8.2 9.32 9.77
[697] 7.9 6.42 5.95
474 Levels: -0.02 -0.13 -0.22 -0.46 -0.55 -1.26 -1.83 -1.86 -2.45 -3.2 ...
9.9
What does this last row mean?
Thanks a lot for the answer and on general for the help contaned in the
mailing list
Mike
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