Hola Eva,

Mira "par()" y en particular:

*xaxs*
The style of axis interval calculation to be used for the x-axis. Possible
values are "r", "i", "e", "s", "d". The styles are generally controlled by
the range of data or xlim, if given.
Style "r" (regular) first extends the data range by 4 percent at each end
and then finds an axis with pretty labels that fits within the extended
range.
Style "i" (internal) just finds an axis with pretty labels that fits within
the original data range.
Style "s" (standard) finds an axis with pretty labels within which the
original data range fits.
Style "e" (extended) is like style "s", except that it is also ensures that
there is room for plotting symbols within the bounding box.
Style "d" (direct) specifies that the current axis should be used on
subsequent plots.
(Only "r" and "i" styles have been implemented in R.)

Saludos,
Carlos Ortega
www.qualityexcellence.es

El 26 de septiembre de 2012 14:04, Eva Prieto Castro
<evapcastro@yahoo.es>escribió:

>
> Hola:
>
> Manipulando el xlim del plot no consigo lograr el efecto deseado, ya que
> si xlim es range(t), el eje x no abarca desde t[1] hasta t[length(t)], sino
> que abarca un poco más, tanto a la izquierda como a la derecha. ¿Cómo
> consigo que el eje X abarque exactamente desde tmin hasta tmax, y no más?.
>
> Gracias.
>
> Eva
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>
>
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-- 
Saludos,
Carlos Ortega
www.qualityexcellence.es

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