ezplot: Easy Function Plot

Description

Easy function plot/wo the need to define x, y coordinates.

Usage

ezplot( f, a, b, n = 101, col = "blue", add = FALSE,
        lty = 1, lwd = 1, marker = 0, pch = 1,
        grid = TRUE, gridcol = "gray", 
        fill = FALSE, fillcol = "lightgray",
        xlab = "x", ylab = "f (x)", main = "Function Plot", ...)

Arguments

Function to be plotted.

a, b

Left and right endpoint for the plot.

Number of points to plot.

col

Color of the function graph.

add

logical; shall the polt be added to an existing plot.

lty

line type; default 1.

lwd

line width; default 1.

marker

no. of markers to be added to the curve; defailt: none.

pch

poimt character; default circle.

grid

Logical; shall a grid be plotted?; default TRUE.

gridcol

Color of grid points.

fill

Logical; shall the area between function and axis be filled?; default: FALSE.

fillcol

Color of fill area.

xlab

Label on the x-axis.

ylab

Label on the y-axis.

main

Title of the plot

...

More parameters to be passed to plot.

Value

Plots the function graph and invisibly returns NULL.

Details

Calculates the x, y coordinates of points to be plotted and calls the plot function.

If fill is TRUE, also calls the polygon function with the x, y coordinates in appropriate order.

If the no. of markers is greater than 2, this number of markers will be added to the curve, with equal distances measured along the curve.

Examples

Run this code

fun <- function(x) x * cos(0.1*exp(x)) * sin(0.1*pi*exp(x))
ezplot(fun, 0, 5, n = 1001, fill = TRUE)