Grokbase Groups R r-help June 2012
FAQ
How would I find the Percent of FuelTypeNum within the Band given
AvailableMW?

example:
type 1 is 1% of PB0
type 2 is 54% of PB0
type 4 is 4% of PB0
type 5 is 42% of PB0


Note: the Bands and fuel types are not always constant.

Data:
FuelTypeNum Bands AvailableMW AvailableMWNewFormat
1 PB0 185319 185.319
2 PB0 18352000 18352
4 PB0 1338785 1338.785
5 PB0 14189756 14189.756
2 PB1 48229 48.229
5 PB1 792433 792.433
2 PB2 7034959 7034.959
4 PB2 796 0.796
5 PB2 1652519 1652.519
1 PB3 16 0.016
2 PB3 11633 11.633
4 PB3 8076 8.076
5 PB3 97410 97.41
1 PB4 4610 4.61
2 PB4 3048 3.048
4 PB4 1117 1.117
5 PB4 28097 28.097
1 PB5 1155 1.155
2 PB5 5331 5.331
4 PB5 2491 2.491
5 PB5 12887 12.887
1 PB6 4 0.004
2 PB6 5774 5.774
4 PB6 2643 2.643
5 PB6 25475 25.475
1 PB7 133 0.133
2 PB7 3787 3.787
4 PB7 750 0.75
5 PB7 10682 10.682
http://r.789695.n4.nabble.com/file/n4632857/Rdata.xlsx Rdata.xlsx

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  • Rolf Turner at Jun 9, 2012 at 2:07 am
    There are almost surely a brazillion ways. Here's one:

    Call your data frame "X". Do:

    XT <- xtabs(AvailableMW~Bands+FuelTypeNum,data=X)
    PXT <- 100*XT/apply(XT,1,sum)
    print(round(PXT,2))

    This gives percent of fuel type 1 in band PB0 as

    0.54 53.87 3.93 41.65

    to two decimal places --- which corresponds with the values
    you gave (assuming that you were rather cavalier about rounding).

    cheers,

    Rolf Turner
    On 09/06/12 10:15, jcrosbie wrote:
    How would I find the Percent of FuelTypeNum within the Band given
    AvailableMW?

    example:
    type 1 is 1% of PB0
    type 2 is 54% of PB0
    type 4 is 4% of PB0
    type 5 is 42% of PB0


    Note: the Bands and fuel types are not always constant.

    Data:
    FuelTypeNum Bands AvailableMW AvailableMWNewFormat
    1 PB0 185319 185.319
    2 PB0 18352000 18352
    4 PB0 1338785 1338.785
    5 PB0 14189756 14189.756
    2 PB1 48229 48.229
    5 PB1 792433 792.433
    2 PB2 7034959 7034.959
    4 PB2 796 0.796
    5 PB2 1652519 1652.519
    1 PB3 16 0.016
    2 PB3 11633 11.633
    4 PB3 8076 8.076
    5 PB3 97410 97.41
    1 PB4 4610 4.61
    2 PB4 3048 3.048
    4 PB4 1117 1.117
    5 PB4 28097 28.097
    1 PB5 1155 1.155
    2 PB5 5331 5.331
    4 PB5 2491 2.491
    5 PB5 12887 12.887
    1 PB6 4 0.004
    2 PB6 5774 5.774
    4 PB6 2643 2.643
    5 PB6 25475 25.475
    1 PB7 133 0.133
    2 PB7 3787 3.787
    4 PB7 750 0.75
    5 PB7 10682 10.682
    http://r.789695.n4.nabble.com/file/n4632857/Rdata.xlsx Rdata.xlsx

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    View this message in context: http://r.789695.n4.nabble.com/Percent-of-a-given-subset-tp4632857.html
    Sent from the R help mailing list archive at Nabble.com.

    ______________________________________________
    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.
  • David Winsemius at Jun 9, 2012 at 2:46 am

    On Jun 8, 2012, at 6:15 PM, jcrosbie wrote:
    How would I find the Percent of FuelTypeNum within the Band given
    AvailableMW?

    example:
    type 1 is 1% of PB0
    type 2 is 54% of PB0
    type 4 is 4% of PB0
    type 5 is 42% of PB0
    format( 100*prop.table(table(dfrm$FuelTypeNum)), 0 )

    ... should do it.


    Note: the Bands and fuel types are not always constant.

    Data:
    FuelTypeNum Bands AvailableMW AvailableMWNewFormat
    1 PB0 185319 185.319
    2 PB0 18352000 18352
    4 PB0 1338785 1338.785
    5 PB0 14189756 14189.756
    2 PB1 48229 48.229
    5 PB1 792433 792.433
    2 PB2 7034959 7034.959
    4 PB2 796 0.796
    5 PB2 1652519 1652.519
    1 PB3 16 0.016
    2 PB3 11633 11.633
    4 PB3 8076 8.076
    5 PB3 97410 97.41
    1 PB4 4610 4.61
    2 PB4 3048 3.048
    4 PB4 1117 1.117
    5 PB4 28097 28.097
    1 PB5 1155 1.155
    2 PB5 5331 5.331
    4 PB5 2491 2.491
    5 PB5 12887 12.887
    1 PB6 4 0.004
    2 PB6 5774 5.774
    4 PB6 2643 2.643
    5 PB6 25475 25.475
    1 PB7 133 0.133
    2 PB7 3787 3.787
    4 PB7 750 0.75
    5 PB7 10682 10.682
    http://r.789695.n4.nabble.com/file/n4632857/Rdata.xlsx Rdata.xlsx

    --
    View this message in context: http://r.789695.n4.nabble.com/Percent-of-a-given-subset-tp4632857.html
    Sent from the R help mailing list archive at Nabble.com.

    ______________________________________________
    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.
    David Winsemius, MD
    West Hartford, CT

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