Thanks Jim and S Ellison for your help
> This should do what you want.
>
> #--x <- read.table('clipboard', header=TRUE,
> as.is=TRUE)
> # convert dates
> x$date <- as.POSIXct(strptime(x$SampleDate,
> "%m/%d/%Y"))
> # put ForkLength into bins
> x$bins <- cut(x$ForkLength, breaks=c(32, 34, 37, 40),
> include.lowest=TRUE)
> # count the bins
> tapply(x$Count, x$bins, sum)
> # plot the data
> plot(x$date, x$ForkLength, col=c('green',
> 'red', 'orange')[x$bins])
>
> > Dear List:
> > I have a dataset with over 5000 records and I would
> like to put the Count in bins
> > based on the ForkLength. e.g.
> > Forklength Count
> > 32-34 ?
> > 35-37 ?
> > 38-40 ?
> > and so on...
> > and lastly I would like to plot (scatterplot)
> including the SampleDate
> > along the X axis and ForkLength along the Y axis.
> I recently saw an
> > example similar to this one here but I don't
> want a histogram I just want to see the ForkLength
> ranges with different colors. For example:
> > ForkLength 32-34---green
> > ForkLength 35-37---red
> > ForkLength 38-40--Orange
> > Thanks in advance
> >
> > SampleDate ForkLength Count
> > 1 12/4/2007 32 2
> > 2 12/6/2007 33 1
> > 3 12/7/2007 33 2
> > 4 12/7/2007 33 2
> > 5 12/7/2007 34 1
> > 6 12/9/2007 31 1
> > 7 12/9/2007 33 2
> > 8 12/10/2007 33 5
> > 9 12/10/2007 34 1
> > 10 12/11/2007 33 2
> > 11 12/15/2007 34 1
> > 12 12/16/2007 33 2
> > 13 12/17/2007 35 1
> > 14 12/19/2007 33 1
> > 15 12/19/2007 35 1
> > 16 12/20/2007 31 1
> > 17 12/20/2007 32 1
> > 18 12/20/2007 33 1
> > 19 12/20/2007 34 3
> > 20 12/21/2007 31 1
> > 21 12/21/2007 32 3
> > 22 12/21/2007 33 4
> > 23 12/21/2007 34 11
> > 24 12/21/2007 35 16
> > 25 12/21/2007 36 3
> > 26 12/21/2007 37 1
> > 27 12/22/2007 32 1
> > 28 12/22/2007 33 3
> > 29 12/22/2007 34 1
> > 30 12/22/2007 35 2
> > 31 12/23/2007 32 1
> > 32 12/23/2007 35 1
> > 33 12/25/2007 32 1
> > 34 12/25/2007 36 1
> > 35 12/26/2007 34 1
> > 36 12/26/2007 35 2
> > 37 12/26/2007 36 1
> > 38 12/27/2007 34 4
> > 39 12/27/2007 35 2
> > 40 12/27/2007 36 2
> > 41 12/28/2007 32 1
> > 42 12/28/2007 33 1
> > 43 12/28/2007 34 1
> > 44 12/28/2007 35 3
> > 45 12/28/2007 36 4
> > 46 12/28/2007 37 6
> > 47 12/28/2007 38 2
> > 48 12/28/2007 39 2
> > 49 12/29/2007 34 1
> > 50 12/29/2007 35 5
> > 51 12/29/2007 36 2
> > 52 12/29/2007 37 1
> > 53 12/30/2007 33 3
> > 54 12/30/2007 34 10
> > 55 12/30/2007 35 10
> > 56 12/30/2007 36 6
> > 57 12/30/2007 37 15
> > 58 12/30/2007 38 3
> > 59 12/31/2007 33 3
> > 60 12/31/2007 34 8
> > 61 12/31/2007 35 9
> > 62 12/31/2007 36 6
> > 63 12/31/2007 37 3
> > 64 12/31/2007 38 1
> > 65 1/1/2008 34 6
> > 66 1/1/2008 35 6
> > 67 1/1/2008 35 1
> > 68 1/1/2008 36 6
> > 69 1/1/2008 37 9
> > 70 1/1/2008 38 1
> > 71 1/2/2008 34 2
> > 72 1/2/2008 34 1
> > 73 1/2/2008 35 2
> > 74 1/2/2008 36 2
> > 75 1/2/2008 37 2
> > 76 1/2/2008 39 1
> > 77 1/3/2008 34 3
> > 78 1/3/2008 35 3
> > 79 1/3/2008 36 2
> > 80 1/3/2008 37 3
> > 81 1/8/2008 32 1
> > 82 1/8/2008 33 7
> > 83 1/8/2008 34 6
> > 84 1/8/2008 35 10
> > 85 1/8/2008 36 16
> > 86 1/8/2008 37 7
> > 87 1/8/2008 38 1
> > 88 1/8/2008 39 1
> > 89 1/9/2008 33 1
> > 90 1/9/2008 34 20
> > 91 1/9/2008 35 49
> > 92 1/9/2008 36 49
> > 93 1/9/2008 37 39
> > 94 1/9/2008 37 1
> > 95 1/9/2008 38 18
> > 96 1/9/2008 39 1
> > 97 1/9/2008 40 1
> > 98 1/10/2008 32 3
> > 99 1/10/2008 33 13
> > 100 1/10/2008 34 56
> > 101 1/10/2008 35 33
> > 102 1/10/2008 36 24
> > 103 1/10/2008 37 18
> > 104 1/10/2008 39 1
> > 105 1/11/2008 33 7
> > 106 1/11/2008 34 46
> > 107 1/11/2008 35 41
> > 108 1/11/2008 36 28
> > 109 1/11/2008 37 29
> >
> > Felipe D. Carrillo
> > Supervisory Fishery Biologist
> > Department of the Interior
> > US Fish & Wildlife Service
> > California, USA
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