[R] time series plots: labels language & tickmarks

[javier garcia - CEBAS]

Hi all;

My native language is spanish and I would need to do two changes in the 
default xlabels in timeseries plots:

a) For timeseries that span more than one year, there are just xlabs and 
tickmarks for the beginning of each year. Could I add extra tick marks for 
each month easily? 

b) The xlabs appear in my language for months and days (spanish) but I need 
them in English, how can I change this setting?

Thanks and best regards,

Javier