plenv

Switch between multiple versions of Perl.

TLDR

Show the currently selected Perl version and how it was selected

$ plenv version

List all available installed Perl versions

$ plenv versions

Set the global Perl version (used unless a local or shell version takes priority)

$ plenv global [version]

Set the local application-specific Perl version (used in the current directory and all directories below it)

$ plenv local [version]

Set the shell-specific Perl version (used for the current session only)

$ plenv shell [version]

Display help

$ plenv

Display help for a command

$ plenv help [command]

SYNOPSIS

plenv(xmin, xmax, ymin, ymax, just, axis)

Sets up plotter environment for simple graphs by calling pladv(3plplot) and setting up viewport and window to sensible default values. plenv(3plplot) leaves a standard margin (left-hand margin of eight character heights, and a margin around the other three sides of five character heights) around most graphs for axis labels and a title. When these defaults are not suitable, use the individual routines plvpas(3plplot), plvpor(3plplot), or plvasp(3plplot) for setting up the viewport, plwind(3plplot) for defining the window, and plbox(3plplot) for drawing the box.

Redacted form: plenv(xmin, xmax, ymin, ymax, just, axis)

This function is used in example 1,3,9,13,14,19-22,29.

ARGUMENTS

xmin (PLFLT(3plplot), input): Value of x at left-hand edge of window (in world coordinates).
xmax (PLFLT(3plplot), input): Value of x at right-hand edge of window (in world coordinates).
ymin (PLFLT(3plplot), input): Value of y at bottom edge of window (in world coordinates).
ymax (PLFLT(3plplot), input): Value of y at top edge of window (in world coordinates).
just (PLINT(3plplot), input): Controls how the axes will be scaled: -1: the scales will not be set, the user must set up the scale before calling plenv(3plplot) using plsvpa(3plplot), plvasp(3plplot) or other. 0: the x and y axes are scaled independently to use as much of the screen as possible. 1: the scales of the x and y axes are made equal. 2: the axis of the x and y axes are made equal, and the plot box will be square.
axis (PLINT(3plplot), input): Controls drawing of the box around the plot: -2: draw no box, no tick marks, no numeric tick labels, no axes. -1: draw box only. 0: draw box, ticks, and numeric tick labels. 1: also draw coordinate axes at x=0 and y=0. 2: also draw a grid at major tick positions in both coordinates. 3: also draw a grid at minor tick positions in both coordinates. 10: same as 0 except logarithmic x tick marks. (The x data have to be converted to logarithms separately.) 11: same as 1 except logarithmic x tick marks. (The x data have to be converted to logarithms separately.) 12: same as 2 except logarithmic x tick marks. (The x data have to be converted to logarithms separately.) 13: same as 3 except logarithmic x tick marks. (The x data have to be converted to logarithms separately.) 20: same as 0 except logarithmic y tick marks. (The y data have to be converted to logarithms separately.) 21: same as 1 except logarithmic y tick marks. (The y data have to be converted to logarithms separately.) 22: same as 2 except logarithmic y tick marks. (The y data have to be converted to logarithms separately.) 23: same as 3 except logarithmic y tick marks. (The y data have to be converted to logarithms separately.) 30: same as 0 except logarithmic x and y tick marks. (The x and y data have to be converted to logarithms separately.) 31: same as 1 except logarithmic x and y tick marks. (The x and y data have to be converted to logarithms separately.) 32: same as 2 except logarithmic x and y tick marks. (The x and y data have to be converted to logarithms separately.) 33: same as 3 except logarithmic x and y tick marks. (The x and y data have to be converted to logarithms separately.) 40: same as 0 except date / time x labels. 41: same as 1 except date / time x labels. 42: same as 2 except date / time x labels. 43: same as 3 except date / time x labels. 50: same as 0 except date / time y labels. 51: same as 1 except date / time y labels. 52: same as 2 except date / time y labels. 53: same as 3 except date / time y labels. 60: same as 0 except date / time x and y labels. 61: same as 1 except date / time x and y labels. 62: same as 2 except date / time x and y labels. 63: same as 3 except date / time x and y labels. 70: same as 0 except custom x and y labels. 71: same as 1 except custom x and y labels. 72: same as 2 except custom x and y labels. 73: same as 3 except custom x and y labels.

AUTHORS

Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot over its long history.