Dear List,
I am reading a method and am unsure how to do something similar, so have come
here for advice!
I have a observed value and a expected value generated from a null model. I am
looking to see if observed - expected is significantly different from zero.
So in the method in the paper it
dering if there is a function to do it for you, I am not
sure, but it would be trivial to programme and if you show us the
formula for it (the mean from the CI), we can certainly give you
pointers for how to write your own :)
Cheers,
Josh
On Fri, Jan 28, 2011 at 2:15 PM, Peter Francis wro
Dear List,
I am not sure if A) this is possible or B) the correct place to ask.
I am looking to find the mean - i have n, and the two-tailed confidence
intervals 0.95 & 0.25 with a p-value of 0.05.
Can i find the mean from this data ?
Thanks
Peter
___
Dear list,
I am looking to plot a line on a graph to show the 1:1 relationship, in order
to demonstrate the pattern i have observed is off the line, however i am
unsure. I have tried abline but i can not see a function to plot the 1:1?
Any help would be greatly appreciated
#generate data
y <-
would use ave. If you wanted a new structure (somewhat shorter)
you would use tapply with sum as the function. E. g:
tapply(ecoregion$ED, ecoregion$ECOCODE, sum)
--
David.
On Jan 12, 2011, at 5:38 AM, Peter Francis wrote:
> Dear List,
>
> I have a question of convenience,
>
>
Dear List,
I have a question of convenience,
I am looking to sum the values of one column based on another column - a
example may help explain better!
ED ECOCODE
21.809467 AA0101
36.229566 PA1201
51.861284 PA1201
11.36232PA1201
27.264634 PA12
Dear List,
I am looking to plot error bars on a line using dispersion.
I have values for the upper value and for the lower values, however i am unsure
how to plot different values for the upper CI and the lower CI?
I have been using
dispersion(1:35,sim,simCI,col="red")
Where there are 35 poi
Dear List,
I am relatively new to R and am trying to create more attractive plots than
excel can manage!
I have looked through the various programmes ggplot, lattice, hmisc etc but my
case seems to be not metnioned, maybe it is but i have not noticed - if this is
the case i apologise.
***
Dear List,
I am relatively new to R and am trying to create more attractive plots than
excel can manage!
I have looked through the various programmes ggplot, lattice, hmisc etc but my
case seems to be not metnioned, maybe it is but i have not noticed - if this is
the case i apologise.
***
Dear List,
I am unsure if this is specifically a R question or a stats question? I thought
i would ask here and if i get no replies it will answer that!
I am trying to calculate Gini coefficients in R, based on a slight modification
of the typical equation that i have seen in a paper.
Past
Dear List,
I have a table i have read into R:
NameYes/No
John0
Frank 1
Ann 0
James 1
Alex1
etc - 800 different times.
What i want to do is shuffle yes/no and randomly re-assign them to the name.
I have used sample() and permute(), however there is no way to do thi
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