error bars on xy plots and barplots and histograms

Dear all

I have yet to find code for making and showing error bars. Is there some
idea that the simple presentation of confidence intervals is not " good
statistics"?

Any leads appreciated.

Chris Buddenhagen, Botany Department, Charles Darwin Research Station, Santa
Cruz,Galapagos. Mail: Charles Darwin Foundation, Casilla 17-01-3891 Avenida
6 de Diciembre N36-109 y Pasaje California Quito, ECUADOR
 






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