>
> This is one data set. I have used linear models, but as these data reflect
> fish consuming energy during a starvation period, there is a lower
> asymptote. I also realize that data is rather scattered and not the
> cleanest. I am interested in looking at how fast the animals reach the
> asy
OK, I am thankful and understand what my mistakes were, but now I look at my
real data and have tried self starting functions and creating my own
functions, resulting in other errors.
This is one data set. I have used linear models, but as these data reflect
fish consuming energy during a starvat
Just a small fix to my solution; inserted below.
On 2010-08-27 3:51, Peter Ehlers wrote:
On 2010-08-26 15:52, Marlin Keith Cox wrote:
I agree. I typically do not use non-linear functions, so am seeing the
"art" in describing functions of non-linear plots. One last thing. I
tried
to use a self-s
On 2010-08-26 15:52, Marlin Keith Cox wrote:
I agree. I typically do not use non-linear functions, so am seeing the
"art" in describing functions of non-linear plots. One last thing. I tried
to use a self-starting Weibull function with the posted data and received
the following error.
model<-
On 26/08/10 19:48, David Winsemius wrote:
On Aug 26, 2010, at 1:35 PM, Marlin Keith Cox wrote:
I need the parameters estimated for a non-linear equation, an example
of the
data is below.
# rm(list=ls()) I really wish people would add comments to destructive
pieces of code.
Time<-c( 0, 0,
I agree. I typically do not use non-linear functions, so am seeing the
"art" in describing functions of non-linear plots. One last thing. I tried
to use a self-starting Weibull function with the posted data and received
the following error.
model<-nls(Level~ SSweibull(Time,Asym,Drop,lrc,pwr))
E
On Aug 26, 2010, at 5:20 PM, Marlin Keith Cox wrote:
> The background you requested are energetic level (joules) in a group
> of starved fish over a time period of 45 days. Weekly, fish (n=5)
> were removed killed and measured for energy. This was done at three
> temperatures. I am compa
Thank you. Could you lastly help me with this error. I was trying to use a
self starting function (Weibull).
model<-nls(Level~ SSweibull(Time,Asym,Drop,lrc,pwr))
Error in qr.default(.swts * attr(rhs, "gradient")) :
NA/NaN/Inf in foreign function call (arg 1)
On Thu, Aug 26, 2010 at 1:42 PM, D
My opinions only below; consume at your own risk.
On Thu, Aug 26, 2010 at 2:20 PM, Marlin Keith Cox wrote:
> The background you requested are energetic level (joules) in a group of
> starved fish over a time period of 45 days. Weekly, fish (n=5) were removed
> killed and measured for energy. Th
The background you requested are energetic level (joules) in a group of
starved fish over a time period of 45 days. Weekly, fish (n=5) were removed
killed and measured for energy. This was done at three temperatures. I am
comparing the rates at which the fish consume stored body energy at each o
On Aug 26, 2010, at 1:48 PM, David Winsemius wrote:
On Aug 26, 2010, at 1:35 PM, Marlin Keith Cox wrote:
I need the parameters estimated for a non-linear equation, an
example of the
data is below.
# rm(list=ls())I really wish people would add comments to
destructive pieces of code.
On Aug 26, 2010, at 1:35 PM, Marlin Keith Cox wrote:
I need the parameters estimated for a non-linear equation, an
example of the
data is below.
# rm(list=ls())I really wish people would add comments to
destructive pieces of code.
Time<-c( 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 3, 3, 3, 3,
I need the parameters estimated for a non-linear equation, an example of the
data is below.
rm(list=ls())
Time<-c( 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4,
4, 4, 5, 5, 5, 5, 5, 8, 8, 8, 8, 8)
Level<-c( 100, 110, 90, 95, 87, 60, 65, 61, 55, 57, 40, 41, 50,
47,
44, 44, 42,
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