A TDA plot

Opens a plot session. Drawing commands are added to it and it is run when the plot is drawn or its file is asked for, which mirrors how TDA works: a PostScript file is opened, a coordinate system set up, commands issued, and the file closed.

Usage

tda_ps(
  data = NULL,
  width = 100,
  height = 70,
  xlim = NULL,
  ylim = NULL,
  file = "plot.ps",
  origin = NULL,
  log = NULL,
  ...
)

Arguments

data

optional data frame the drawing commands may refer to.

width, height

size of the plotting area in millimetres.

xlim, ylim

ranges of the coordinate system.

file

name for the PostScript file.

origin

the session's physical position on the page, c(x, y) in mm from the page origin (TDA's psorg=). Only useful together with tda_pl_panel, since it fixes a known starting point that panel's origin= (relative to the previous panel) is added onto; omit it for an ordinary, single-panel session, where TDA's default page position is used.

log

which axes are logarithmic (TDA's pxa(log=1)/ pya(log=1), a per-axis option nested inside pxa=/ pya= rather than an ordinary psetup option): any of "x", "y", "xy", or ""/NULL (the default) for neither.

...

further options for psetup.

Value

A tda_ps session.

See also

Other plotting: plot.tda_ple(), tda_check_ps(), tda_pl(), tda_pl_arc(), tda_pl_axis(), tda_pl_graph(), tda_pl_hist, tda_pl_panel(), tda_pl_regression(), tda_pl_scatter(), tda_plot_ps(), tda_ps3(), tda_read_ps()

Examples

d <- data.frame(x = 1:5, y = c(2, 4, 5, 8, 9))
p <- tda_ps(d, xlim = c(0, 6), ylim = c(0, 10))
p <- tda_pl_axes(p)
p <- tda_pl_lines(p, "x", "y")
p
#> TDA plot session (plot.ps), 100 x 70 mm, x: [0,6], y: [0,10]
#> Data: 5 rows, x, y 
#> 3 drawing commands:
#>   plxa( );
#>   plya( );
#>   plot( ) = Vx,Vy;
#> (not yet rendered -- plot() or tda_ps_file() runs it)