PGPLOT

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lib/PDL/Demos/PGPLOT.pm  view on Meta::CPAN

    # Now a simple plot with points
    points $x, $y;
|],

[act => q|
    # Here is the same with lines
    line $x, $y;
|],

[act => q|
    # If you want to overlay one plot you can use the command
    # 'hold' to put the graphics on hold and 'release' to
    # revert the effect

    points $x, $y, {SYMBOL=>4};  # The last argument sets symboltype
    hold;
    # Now draw lines between the points
    line $x, $y;
    # Plot errorbars over the points
    $yerr=sqrt($y);
    errb $x, $y, $yerr;

lib/PDL/Demos/PGPLOT.pm  view on Meta::CPAN

[act => q|
    # 2D data can also easily be accommodated:

    # First make a simple image
    $gradient=sequence(40,40);

    # Then display it.
    imag $gradient;

    # And overlay a contour plot over it:
    hold;
    cont $gradient;
    release;
|],

[act => q|
  # PDL::Graphics::PGPLOT contains several colour tables,
  # a more extensive collection can be found in
  # PDL::Graphics::LUT
  #

lib/PDL/Graphics/PGPLOT.pm  view on Meta::CPAN

 poly       -  Draw a polygon
 text       -  Write text in the plot area
 label_axes -  Print axis titles
 legend     -  Create a legend with different texts, linestyles etc.
 cursor     -  Interactively read cursor positions.
 circle     -  Draw a circle
 ellipse    -  Draw an ellipse.

Device manipulation commands:

 hold         -  Hold current plot window range - allows overlays etc.
 release      -  Release back to autoscaling of new plot window for each
                 command
 rel          -  short alias for 'release'
 env          -  Define a plot window, put on 'hold'
 dev          -  Explicitly set a new PGPLOT graphics device
 new_window   -  Create a new plot window (use of dev is recommended)
 focus_window -  Change focus to a new window
 window_list  -  Get a list of currently existing plot windows
 close_window -  Close an open window

lib/PDL/Graphics/PGPLOT/Window.pm  view on Meta::CPAN

 text       -  Write text in the plot area
 cursor     -  Interactively read cursor positions.
 circle     -  Draw a circle
 ellipse    -  Draw an ellipse.

Device manipulation commands:

 new           -  Construct a new output device
 pgwin         -  Exported hook to new()
 close         -  Close a PGPLOT output device.
 hold          -  Hold current plot window range - allows overlays etc.
 release       -  Release back to freshly autoscaling for each command.
 held          -  Indicates whether the current window is held.
 focus         -  Set focus to the given device.
 erase         -  Erase the current window (or panel).
 options       -  Get the options set for the present output device.
 id            -  The ID for the device.
 device        -  The device type.
 name          -  The window name.

Notes: C<$transform> for image/cont etc. is used in the same way as the