I'm sure there is a clever way to do the following, but I've been unable to
find it on this forum or by writing my own functions. I have 8 years worth
of weekly data but would like to restrict the labels on the x-axis to months
only. I've included the first year's worth of data below.
My line of thought has been along these lines
x<-seq(as.Date("1999-04-01"),as.Date("2007-10-25"),by="1 month")
y<-as.POSIXlt(x)$mon+1
months<-month.name
month.names<-months[as.numeric(y)]
month.names<-substr(month.names,1,3)
plot(cropped.cast1$date,cropped.cast1$Frac_ET_Satsfd_mean,xaxt='n')
mtext(text=month.names,side=1,at=???
I'm not sure how to tie "month.names" back to their true location on the
x-axis?
I appreciate any insights, Eric
Also,
>class(cropped.cast1$date)
[1] "POSIXt" "POSIXct"
>cropped.cast1
date Frac_ET_Satsfd_mean Frac_ET_Satsfd_sd
1999-04-08 0.8344885 0.13545515
1999-04-15 0.8355466 0.12810387
1999-04-22 0.8595579 0.11259251
1999-04-29 0.8997225 0.09611060
1999-05-06 0.8714364 0.09527164
1999-05-13 0.8530203 0.11088544
1999-05-20 0.8437866 0.12689882
1999-05-27 0.8310003 0.13985307
1999-06-03 0.8031203 0.15851422
1999-06-10 0.8288505 0.12827027
1999-06-17 0.8251130 0.13051783
1999-06-24 0.8227639 0.14227501
1999-07-01 0.7914689 0.15892716
1999-07-08 0.8050929 0.14465413
1999-07-15 0.8370141 0.11843615
1999-07-22 0.8448697 0.10823010
1999-07-29 0.8561925 0.10694348
1999-08-05 0.8520790 0.09953065
1999-08-12 0.8429925 0.10545427
1999-08-19 0.8397966 0.11629002
1999-08-26 0.8367953 0.12363411
1999-09-02 0.8219479 0.13870596
1999-09-09 0.8218193 0.13617427
1999-09-16 0.8217584 0.13346997
1999-09-23 0.8216834 0.13304117
1999-09-30 0.8111005 0.14367143
1999-10-07 0.8090813 0.14967750
1999-10-14 0.8265188 0.13484263
1999-10-21 0.8391333 0.11873929
1999-10-28 0.8426102 0.11215439
1999-11-04 0.8431813 0.11007485
1999-11-11 0.8394140 0.11206864
1999-11-18 0.8350650 0.11042384
1999-11-25 0.8360082 0.11011926
1999-12-02 0.8362129 0.10834491
1999-12-09 0.8377512 0.10519698
1999-12-16 0.8367339 0.10176535
1999-12-23 0.8338621 0.10273662
1999-12-30 0.8317094 0.10470654
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