[R] Error.bars

Sueli Rodrigues srodrigu at esalq.usp.br
Thu Mar 12 00:49:30 CET 2009

I'm studying the Michael J. Crawley book (Statistics An Introduction using
R)and I'm trying to reproduce one example (page 168) for plot a barplot
with error bars, but when I put the function I receive the following
message. Please, could someone told me what's wrong?

for(i in

Erro: unexpected symbol in

Sueli Rodrigues

Eng. Agrônoma - UNESP
Mestranda - USP/ESALQ
PPG-Solos e Nutrição de Plantas
Fones (19)93442981

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