NAME

Graphics::Grid::Grob::Points - Points grob

VERSION

version 0.0001

SYNOPSIS

    use Graphics::Grid::Grob::Points;
    use Graphics::Grid::GPar;
    my $points = Graphics::Grid::Grob::Points->new(
        x => [ map { rand() } (0 .. 9) ],
        y => [ map { rand() } (0 .. 9) ],
        pch => "A",
        gp => Graphics::Grid::GPar->new());
    
    # or use the function interface
    use Graphics::Grid::Functions qw(:all);
    my $points = points_grob(%params);

DESCRIPTION

This class represents a "points" graphical object.

ATTRIBUTES

x

A Grahpics::Grid::Unit object specifying x-values.

Default to an array ref of 10 numbers from rand().

y

A Grahpics::Grid::Unit object specifying y-values.

Default to an array ref of 10 numbers from rand().

x and y combines to define the points. x and y shall have same length, which is the number of points in the grob object.

pch

Plotting character. A single value to indicate what sort of plotting symbol to use. See points for the interpretation of these values.

Graphics::Grid::Unit object specifying the size of the plotting symbols. Default to unit(1, "char").

vp

A viewport object. When drawing a grob, if the grob has this attribute, the viewport would be temporily pushed onto the global viewport stack before drawing takes place, and be poped after drawing. If the grob does not have this attribute set, it would be drawn on the existing current viewport in the global viewport stack.

elems

Get number of sub-elements in the grob.

Grob classes shall implement a _build_elems() method to support this attribute.

For this module elems returns the number of points.

SEE ALSO

Graphics::Grid::Functions

Graphics::Grid::Grob

AUTHOR

Stephan Loyd <sloyd@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by Stephan Loyd.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.