coordTransform: Coordinate transformation for data frames
In dMod: Dynamic Modeling and Parameter Estimation in ODE Models

Description Usage Arguments Value Examples

Applies a symbolically defined transformation to the value column of a data frame. Additionally, if a sigma column is present, those values are transformed according to Gaussian error propagation.

1	coordTransform(data, transformations)

`data`	data frame with at least columns "name" (character) and "value" (numeric). Can optionally contain a column "sigma" (numeric).
`transformations`	character (the transformation) or named list of characters. In this case, the list names must be a subset of those contained in the "name" column.

The data frame with the transformed values and sigma uncertainties.

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mydata1 <- data.frame(name = c("A", "B"), time = 0:5, value = 0:5, sigma = .1)
coordTransform(mydata1, "log(value)")
coordTransform(mydata1, list(A = "exp(value)", B = "sqrt(value)"))