RandomFields (version 2.0.45)

userinput: General input function

Description

The function provides a general functionality to read and reply user input by locator and readline

Usage

userinput(fct, info=NULL, prompt, n,  type="n", pch=par()$pch,
          cex=par()$cex, ...)

Arguments

fct

either locator or readline

info

arbitrary object; tracing information that is useful in case the user likes to edit the stored sequence of inputs

prompt

prompt parameter of readline

n

parameter n of locator

type

parameter type of locator

pch

character type used by locator

cex

character size used by locator

...

additional graphics parameters used by locator

Value

• If fct="readline" then a character vector of length one is returned.

  If fct="locator" then the function returns a list containing 'x' and 'y' components which are the coordinates of the identified points in the user coordinate system, i.e., the one specified by 'par("usr")'.

Details

The behaviour of userinput depends on the the value of action set by useraction, see there for more information.

See Also

getactions, Locator, Readline, useraction