getC1: Get the Crown Radius to Tree Diameter Ratio (m/cm) This...
In ecology-rocks/MakeMyForests: SORTIE-ND Preparation From Forest Inventory Data
Description
Usage
Arguments
Details
Value
Description
The generalized equation that these parameters fit is as follows:
Usage
1
getC1(x)
Arguments
x
This is your target dataframe. It must have four columns: DIA, b0,
b1, and b2. If your target species does not use one of the parameters, just
set it to 0 to cancel it out.
Details
CrownRadius = (b0 + b1*DIA + b2*DIA^2)/2
where b0, b1 and b2 are
species-specific parameters. These were calculated extensively for our main
Sierra Nevada study species by Bechtold WA (2004) Largest-Crown-Width
Prediction Models for 53 Species in the Western United States. West J Appl
For 19:245–251.
Value
This function returns a single number, the mean crown ratio for the
values you entered. Use the doFxBySort wrapper to get it for
multiple species, e.g.,
doFxBySort(getC1, "SPCD", c("DIA", "b0", "b1", "b2"), TreesCA)
ecology-rocks/MakeMyForests documentation built on May 15, 2019, 7:57 p.m.
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Description Usage Arguments Details Value
Description
The generalized equation that these parameters fit is as follows:
Usage
1 | getC1(x)
|
Arguments
x |
This is your target dataframe. It must have four columns: DIA, b0, b1, and b2. If your target species does not use one of the parameters, just set it to 0 to cancel it out. |
Details
CrownRadius = (b0 + b1*DIA + b2*DIA^2)/2
where b0, b1 and b2 are species-specific parameters. These were calculated extensively for our main Sierra Nevada study species by Bechtold WA (2004) Largest-Crown-Width Prediction Models for 53 Species in the Western United States. West J Appl For 19:245–251.
Value
This function returns a single number, the mean crown ratio for the
values you entered. Use the doFxBySort wrapper to get it for
multiple species, e.g.,
doFxBySort(getC1, "SPCD", c("DIA", "b0", "b1", "b2"), TreesCA)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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