[R] problem with max in a function

[David Winsemius]

On Sep 7, 2010, at 9:37 PM, stephen sefick wrote:

> Here is a striped down example that is not working

That dreadful phrase... "is not working". When the ESP package comes  
to fruition, life will be so easy. Until then ... the English language  
is necessary. Where am we supposed to be looking. Did I miss you  
saying which of those (unprinted) objects we should be fixing.

> because of the 1.00
> to 1.  Any help would be greatly appreciated.
>
> measure_bkf <- (structure(list(measurment_num = c(0, 0.2, 0.4, 0.6,
> 0.8, 1, 1.2,
> 1.4, 1.6, 1.8, 2, 2.2, 2.2, 2.4, 2.6, 2.8), bankfull_depths_m =  
> c(-0.15,
> -0.09, -0.00999999999999998, 0.06, 0.13, 0.26, 0.36, 0.46, 0.56,
> 0.61, 0.85, 0.93, 0.93, 0.97, 1, 1)), .Names = c("measurment_num",
> "bankfull_depths_m"), row.names = c(32L, 1L, 2L, 3L, 4L, 5L,
> 6L, 7L, 8L, 9L, 10L, 11L, 29L, 12L, 13L, 14L), class = "data.frame"))
>
>
>
> measure_bkf_not_zero <- measure_bkf[grep("[^0]",
> measure_bkf[,"bankfull_depths_m"]),]
>
> bkf_min <- grep(min(measure_bkf_not_zero[,"bankfull_depths_m"]),
> measure_bkf_not_zero[,"bankfull_depths_m"])
>
> bkf_max <- grep(max(measure_bkf_not_zero[,"bankfull_depths_m"]),
> measure_bkf_not_zero[,"bankfull_depths_m"])
>
> bkf_min <- ifelse(length(bkf_min)>1, bkf_min[1], bkf_min)
> bkf_max <- ifelse(length(bkf_max)>1, bkf_max[1], bkf_max)
>
> #s <- with(measure_bkf_not_zero, approx(measurment_num,
> bankfull_depths_m,
> xout=seq(measure_bkf_not_zero[bkf_min,"measurment_num"],
> measure_bkf_not_zero[bkf_max,"measurment_num"], length=2000)))
> #int_bkf <- with(s, x[which.min(y[y>0])])
>
> s <- with(measure_bkf_not_zero[bkf_min:bkf_max,],
> approxfun(bankfull_depths_m, measurment_num), ties=mean)
>
> int_bkf <- s(0)
>
>
>
> On Tue, Sep 7, 2010 at 8:28 PM, David Winsemius <dwinsemius at comcast.net 
> > wrote:
>>
>> On Sep 7, 2010, at 9:06 PM, stephen sefick wrote:
>>
>>> s <- 1.00
>>> max(s)
>>
>>> sprintf("%.2f", max(s))
>> [1] "1.00"     @ as a string/character object
>>>
>>> returns 1
>>>
>>> is there anyway that I can get it to return 1.00.  I am using the
>>> results of this max statement in a grep statement and it returns the
>>> wrong numbers,  I will provide more information and code if it would
>>> make more sense in context.
>>>
>>> -- Stephen Sefick
>>> ____________________________________
>>> | Auburn University                                   |
>>> | Department of Biological Sciences           |
>>> | 331 Funchess Hall                                  |
>>> | Auburn, Alabama                                   |
>>> | 36849                                                    |
>>> |___________________________________|
>>> | sas0025 at auburn.edu                             |
>>> | http://www.auburn.edu/~sas0025             |
>>> |___________________________________|
>>>
>>> Let's not spend our time and resources thinking about things that  
>>> are
>>> so little or so large that all they really do for us is puff us up  
>>> and
>>> make us feel like gods.  We are mammals, and have not exhausted the
>>> annoying little problems of being mammals.
>>>
>>>                                -K. Mullis
>>>
>>> "A big computer, a complex algorithm and a long time does not equal
>>> science."
>>>
>>>                              -Robert Gentleman
>>> ______________________________________________
>>> 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
>>
>>
>
>
>
> -- 
> Stephen Sefick
> ____________________________________
> | Auburn University                                   |
> | Department of Biological Sciences           |
> | 331 Funchess Hall                                  |
> | Auburn, Alabama                                   |
> | 36849                                                    |
> |___________________________________|
> | sas0025 at auburn.edu                             |
> | http://www.auburn.edu/~sas0025             |
> |___________________________________|
>
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
>                                 -K. Mullis
>
> "A big computer, a complex algorithm and a long time does not equal  
> science."
>
>                               -Robert Gentleman

David Winsemius, MD
West Hartford, CT