WalleyeGerowLW: Raw length-weight data that can be used to compute the Ws for...

In droglenc/FSAWs: Construct and Validate Standard Weight (Ws) Equations for Fish

Raw length-weight data that can be used to compute the Ws for Walleye as performed in Gerow (2005).

Description

Raw length-weight data from a variety of populations used for computing the standard weight (Ws) equation for Walleye (Sander vitreus vitreus).

Format

A data frame with 34734 observations on the following 3 variables:

popn

A unique numeric identifier for each separate regression.

len

Total length (mm) of fish.

wt

Weight (g) of fish.

Source

Directly from Ken Gerow. Summarized in Gerow, K.G., R.C. Anderson-Sprecher, and W.A. Hubert. 2005. A new method to compute standard-weight equations that reduces length-related bias. North American Journal of Fisheries Management 25:1288-1300.

See Also

rlp, emp, and wsValidate.

Examples

str(WalleyeGerowLW)
head(WalleyeGerowLW)

## two of many examples
op <- par(mfrow=c(1,2),pch=19)
plot(wt~len,data=WalleyeGerowLW,subset=popn==1,main="Population #1")
plot(wt~len,data=WalleyeGerowLW,subset=popn==10,main="Population #10")
par(op)

droglenc/FSAWs documentation built on Feb. 3, 2023, 8:48 a.m.