x3p_add_hline: Add horizontal line to the mask of an x3p object

In x3ptools: Tools for Working with 3D Surface Measurements

Description

Add horizontal lines to overlay the surface of an x3p object. Lines are added to a mask. In case no mask exists, one is created.

Usage

x3p_add_hline(x3p, yintercept, size = 5, color = "#e6bf98")

Arguments

x3p	x3p object
yintercept	(vector of) numerical values for the position of the lines.
size	width (in pixels) of the line
color	(vector of) character values to describe color of lines

Value

x3p object with added vertical lines in the mask

Examples

## Not run: 
logo <- x3p_read(system.file("csafe-logo.x3p", package = "x3ptools"))
color_logo <- magick::image_read(system.file("csafe-color.png", package = "x3ptools"))
logoplus <- x3p_add_mask(logo, as.raster(color_logo))
# five horizontal lines at equal intervals:
logoplus <- x3p_add_hline(logo, seq(0, 418 * 6.4500e-7, length = 5), size = 3)
x3p_image(logoplus, size = c(741, 419), zoom = 0.5)

## End(Not run)

x3ptools documentation built on Nov. 27, 2021, 1:06 a.m.