Lahontan cutthroat trout (Oncorhynchus clarki henshawi) numbers per meter of stream to stream width:depth ratio for n = 71 observations of streams across years in Nevada (Dunham et al. 2002, Cade 2005, Cade and Richards 2006, Cade et al. 2006).
Usage
data(lahontan)
Format
A data frame with 71 observations on the following 6 variables.
lctm
Lahonton cutthroat trout per meter of stream.
widrat
Stream width:depth ratio
lnlctm
Log transformation of lctm.
wt
Weights estimated to account for heterogeneity.
wtwidrat
wt multiplied by widrat.
wtlnlctm
wt multiplied by lnlctm.
Source
Dunham, J.B., B.S. Cade, and J.W. Terrell. 2002. Influences of spatial
and temporal variation on fish-habitat relationships defined by regression quantiles.
Transactions of the American Fisheries Society131, 86–98.
References
Cade, B.S. 2005.Linear models: Permutation methods. Pages 1049–1054 in B. Everitt and D. Howell, eds. Encyclopedia of Statistics in the Behavioral Science. Vol. 2. John Wiley and Sons.
Cade, B.S., J.D. Richards, and P.W. Mielke, Jr. 2006. Rank score and permutation testing alternatives for regression quantile estimates. Journal of Statistical Computation and Simulation76, 331–355.
Cade, B.S., and J.D. Richards. 2006. A permutation test for quantile regression. Journal of Agricultural, Biological, and Environmental Statistics11, 106–126.
Examples
str(lahontan)
plot(lahontan) # come up with a better plot when I understand the data
Results
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
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> library(Blossom)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/Blossom/lahontan.Rd_%03d_medium.png", width=480, height=480)
> ### Name: lahontan
> ### Title: Lahontan cutthroat trout density in streams
> ### Aliases: lahontan
> ### Keywords: datasets
>
> ### ** Examples
>
> str(lahontan)
'data.frame': 71 obs. of 6 variables:
$ lctm : num 0.448 0.232 0.437 0.5 0.091 ...
$ widrat : num 42.2 35.3 26.8 37 44.9 ...
$ lnlctm : num -0.803 -1.459 -0.827 -0.694 -2.397 ...
$ wt : num 1.68 1.4 1.17 1.46 1.82 ...
$ wtwidrat: num 71.1 49.6 31.3 54.1 81.8 ...
$ wtlnlctm: num -1.352 -2.05 -0.967 -1.015 -4.365 ...
> plot(lahontan) # come up with a better plot when I understand the data
>
>
>
>
>
> dev.off()
null device
1
>