regress.loglog: Performs regression and graphs in a convenient way.
In forestgeo/ctfs: Tools for the Analysis of Forest Dynamics

Description Usage Arguments See Also

Performs regression and graphs in a convenient way: with or without log-transforming x and y variables (the option addone can be included to handle zeros for log-transformation), with or without manual point labelling, without or without the best-fit line added, and with many options for colors and points. add can be a vector of length 2, a constant to be added to every value of x, y to remove zeroes.

regress.loglog(x, y, xlog = TRUE, ylog = TRUE, addone = NULL,
  graphit = TRUE, xrange = NULL, yrange = NULL, add = FALSE,
  pts = 16, lwidth = 1, drawline = "solid", title = "",
  xtitle = NULL, ytitle = NULL, ptnames = NULL, ptsize = 1,
  clr = "blue", lineclr = "red", includeaxis = TRUE)

`x, y`	Variables on which to perform regression and graph.
`xlog, ylog`	Logical. Set to `TRUE` to log-transform x and y variables.
`addone`	Use to handle zeros for log-transformation
`graphit`	Logical; if `TRUE` adds plot output.
`add`	Logical. Whether to add elements such as points or line to an existing graph. if TRUE, there must be an appropriate existing graph, otherwise, a new graph is drawn.
`pts`	See argument `pch` in `graphics::par()`.
`lwidth`	Line width; see `width` in ?`graphics::par()`.
`ptsize`	Passed to argument `cex` in `graphics::par()`.
`clr`	A string indicating colour. See argument col in `graphics::par()`.
`ltype`	Line type; see `ltype` in ?`graphics::par()`.