Displaying 2 results from an estimated 2 matches for "graphmodelplin".
2018 Apr 07
0
Obtain gradient at multiple values for exponential decay model
...stion to try it out in this case:
################# reprex (see reprex package)
graphdta <- read.csv( text =
"t,c
0,100
40,78
80,59
120,38
160,25
200,21
240,16
280,12
320,10
360,9
400,7
", header = TRUE )
nd <- c( 100, 250, 300 )
graphmodeld <- lm( log(c) ~ t, data = graphdta )
graphmodelplin <- predict( graphmodeld
, newdata = data.frame( t = nd )
)
graphmodelp <- exp(graphmodelplin)
graphmodelp
#> 1 2 3
#> 46.13085 16.58317 11.79125
# derivative of exp( a + b*t ) is b * exp( a + b*t )
graphmodeldpdt &...
2018 Apr 06
3
Obtain gradient at multiple values for exponential decay model
> On Apr 6, 2018, at 8:03 AM, David Winsemius <dwinsemius at comcast.net> wrote:
>
>
>> On Apr 6, 2018, at 3:43 AM, g l <gnulinux at gmx.com> wrote:
>>
>>> Sent: Friday, April 06, 2018 at 5:55 AM
>>> From: "David Winsemius" <dwinsemius at comcast.net>
>>>
>>>
>>> Not correct. You already have