Hi,
I think that providing the output from str(data array or whatever you
have) would help.
Because, for now, we don't have much idea of what you really have.
Moreover, some sample data is always welcomed (using the function dput
for example)
Ivan
Le 5/18/2010 17:36, Arantzazu Blanco Bernardeau a écrit :
sorry I had a mistake sending my question without a subject. I do resend again.
Please excuse me.
Hello
I have a data array with soil variables (caperf), in which the variable "clay"
is factor (as I see entering str(caperf)) . I need to do a regression model, so I need to
have arcilla (=clay) as a numeric variable. For that I have entered
as.numeric(as.character(arcilla))
and even entering
'as.numeric(levels(arcilla))[arcilla]'the variable is resting as factor, and
the linear model is not valid (for my purposes).
The decimal commas have been converted to decimal points, so I have no idea of
what to do.
Thanks a lot
Arantzazu Blanco Bernardeau
Dpto de Química Agrícola, Geología y Edafología
Universidad de Murcia-Campus de Espinardo
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