[R] Changing the order of months within a year

[Clint Bowman]

I'm sure the OP has reasons to reorder the months as shown but his data 
seems to argue that he shouldn't split the wet season (Oct - Apr) but 
should, instead, tack the 1972 months (Jan - Aug after the 1971 months 
(Sep - Dec).

Clint

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On Tue, 12 Feb 2013, David Winsemius wrote:

>
> On Feb 11, 2013, at 10:09 PM, nick pardikes wrote:
>
>> I have data that looks like below and I would like to re-order the values within the "date" column. I would like to have each year organized like so:
>>
>> Sep-71
>> Oct-71
>> Nov-71
>> Dec-71
>> Jan-71
>> Feb-71
>> Mar-71
>> Apr-71
>> May-71
>> Jun-71
>> Jul-71
>> Aug-71
>> Sep-72
>> Oct-72
>> etc...
>>
>
> dat1[ order(dat1$year, match(substr(dat1$date, 1,3),  month.abb[c(9:12,1:8)] ) ) , ]
>
>
> -- 
> David.
>
>> Is there any way I can order the column in my own fashion and just move Sep-Dec to the beginning of each year? I am planning on doing some time series analysis with this data and think that the order of months is very important for the time series. I appreciate any suggestions and thank you in advance.
>>
>>
>>
>>        site           date year precipitation temp_max temp_min
>> 1  castlepeak Jan-71 1971    26.2903226 38.29032 18.06452
>> 2  castlepeak Feb-71 1971     9.1071429 39.60714 17.50000
>> 3  castlepeak Mar-71 1971    36.3548387 38.87097 17.77419
>> 4  castlepeak Apr-71 1971    14.8333333 44.06667 22.56667
>> 5  castlepeak May-71 1971    11.0967742 47.87097 29.22581
>> 6  castlepeak Jun-71 1971     7.9000000 62.20000 34.16667
>> 7  castlepeak Jul-71 1971     0.4516129 75.45161 44.93548
>> 8  castlepeak Aug-71 1971     1.1612903 76.54839 45.96774
>> 9  castlepeak Sep-71 1971     0.9333333 68.30000 36.86667
>> 10 castlepeak Oct-71 1971    10.1612903 56.22581 31.74194
>> 11 castlepeak Nov-71 1971    58.1000000 43.13333 28.43333
>> 12 castlepeak Dec-71 1971    56.0645161 30.87097 16.29032
>> 13 castlepeak Jan-72 1972    16.7741935 33.90323 15.41935
>> 14 castlepeak Feb-72 1972    30.4137931 37.62069 19.82759
>> 15 castlepeak Mar-72 1972    12.5161290 46.45161 24.06452
>> 16 castlepeak Apr-72 1972    20.9333333 41.23333 22.10000
>> 17 castlepeak May-72 1972     3.3870968 53.06452 28.77419
>> 18 castlepeak Jun-72 1972     3.7666667 65.60000 37.93333
>> 19 castlepeak Jul-72 1972     0.0000000 74.25806 43.45161
>> 20 castlepeak Aug-72 1972     0.2258065 73.35484 43.03226
>> 21 castlepeak Sep-72 1972     5.4000000 65.66667 37.90000
>> 22 castlepeak Oct-72 1972     5.1612903 51.00000 27.38710
>> 23 castlepeak Nov-72 1972    23.0666667 40.10000 23.43333
>> 24 castlepeak Dec-72 1972    50.7096774 27.00000 10.16129
>>
>> Nick Pardikes
>> PhD Student
>> Program in Ecology, Evolution and Conservation Biology
>> University of Nevada, Reno
>> 303-550-1072
>> http://wolfweb.unr.edu/homepage/npardikes/MySite/Welcome.html
>>
>> 	[[alternative HTML version deleted]]
>>
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>> and provide commented, minimal, self-contained, reproducible code.
>
> David Winsemius
> Alameda, CA, USA
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>