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Hola Eric Puedes combinar criterios con los operadores lógicos "&" y "|" Lo que quieres hacer serÃa datos20-30 <- datos[ datos$gpodeedad=="20a30" & datos$sexo =="hombre", 10] Un saludo El 13/12/2011, a las 06:28, Jorge I Velez escribió...
Hello, I've allways had some problems compiling R (R-62.x and R-63.x) on a AIX 4.2.1 System to the end: make produces following output: ... ... mkdir ../../../library/eda/R ld: 0711-327 WARNING: Entry point...
Hola a todos. En el artÃculo de la wikipedia tienes muchos libros recomendados a diferentes niveles: http://en.wikipedia.org/wiki/Linear_algebra De todos ellos: yo te recomendarÃa: 1. Nivel introducción: Lay, David C. (August 22, 2005...
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