pdl::graphics::pgplotoptions(3) [redhat man page]

PGPLOTOptions(3)					User Contributed Perl Documentation					  PGPLOTOptions(3)

NAME

       PDL::Graphics::PGPLOTOptions - Setting PGPLOT options

SYNOPSIS

       use PGPLOTOptions qw('default_options');

DESCRIPTION

       This package contains one function (at present) which returns PDL::Option objects for default settings for plot windows and plot commands.
       This should be complemented by functions that could affect this such as file reading commands etc.

OPTIONS

       The following is a listing of options that are set in this file and what they do and what their default value is

       Window specfic options

       These options modify the appearance of windows and can also modify the default settings for creation of plot axes etc.

       Device
	   The default PGPLOT device to use. The default value is set to the PGPLOT_DEV environment variable if set, otherwise to '?'.

       AxisColour
	   The colour with which to draw axes. Default value=3 (Green)

       HardLW, HardCH, HardFont, HardAxisColour, HardColour
	   The linewidth, character height, font and axis colour to use on hardcopy devices. The default values are HardLW=4, HardCH=1.4, Hard-
	   Font=2 (Roman), HardAxisColour=1 (Black) and HardColour=1 as well. The latter is the default plot colour to use on hardcopy devices.

       Axis
	   The axis style to use. See the PDL::Graphics::PGPLOT::Window documentation for details. It defaults to 'Normal' which is a labelled
	   box. Valid arguments are 'Empty', 'Box', 'Normal', 'Axes', 'Grid', 'LogX', 'LogY', 'LogXY'.

       AspectRatio
	   The aspect ratio of the output device. The default value is device dependent.

       WindowWidth
	   The width of the output window in inches and defaults to as big as possible.

       WindowXSize and WindowYSize
	   These are alternatives to AspectRatio and WindowWidth.

       WindowName
	   The name of the window - can later be retrieved using name(). It defaults to 'Window'+Window ID.

       NXPanel
	   The number of panels in the X-direction - defaults to 1

       NYPanel
	   The number of panels in the Y-direction - defaults to 1

       Justify
	   A boolean value which, if true, causes both axes to drawn to the same scale; see the PGPLOT "pgenv()" command for more information.

       Border
	   Adjust the spacing around the plot. See the documentation in PDL::Graphics::PGPLOT::Window for details.

       CharSize
	   The default charsize for the plot - used when annotating the axes for instance. It defaults to 1.

       PlotPosition
	   The position of the plot in normalised coordinates.

       Erase
	   Explicitly erase the plotting surface, normally required when making new plots with PlotPosition.

       Plot specific options

       For the moment see the "PDL::Graphics::PGPLOT::Window" documentation for these.

       set_pgplot_options

       This function allows the user to set the default PGPLOT options. It is particularly useful in the ".perldlrc" file since one can do

	 use PDL::Graphics::PGPLOTOptions ('set_pgplot_options');
	 set_pgplot_options('Device' => '/xs', 'HardLW' => 3);

       for instance to set the default values. The main drawback is that the routine is rather unflexible with no synonyms or case-insensitivity.

perl v5.8.0							    2002-08-15							  PGPLOTOptions(3)

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TriD::Contours(3pm)					User Contributed Perl Documentation				       TriD::Contours(3pm)

NAME

	 PDL::Graphics::TriD::Contours - 3D Surface contours for TriD

SYNOPSIS

	   # A simple contour plot in black and white

	   use PDL::Graphics::TriD;
	   use PDL::Graphics::TriD::Contours;
	   $size = 25;
	   $x = (xvals zeroes $size,$size) / $size;
	   $y = (yvals zeroes $size,$size) / $size;
	   $z = (sin($x*6.3) * sin($y*6.3)) ** 3;
	   $data=new PDL::Graphics::TriD::Contours($z,
		      [$z->xvals/$size,$z->yvals/$size,0]);
	   PDL::Graphics::TriD::graph_object($data)

FUNCTIONS

   new()
       Define a new contour plot for TriD.

	 $data=new PDL::Graphics::TriD::Contours($d,[$x,$y,$z],[$r,$g,$b],$options);

       where $d is a 2D pdl of data to be contoured. [$x,$y,$z] define a 3D map of $d into the visualization space [$r,$g,$b] is an optional [3,1]
       piddle specifing the contour color and $options is a hash reference to a list of options documented below.  Contours can also be colored by
       value using the set_color_table function.

	 ContourInt  => 0.7  # explicitly set a contour interval
	 ContourMin  => 0.0  # explicitly set a contour minimum
	 ContourMax  => 10.0 # explicitly set a contour maximum
	 ContourVals => $pdl # explicitly set all contour values
	 Label => [1,5,$myfont] # see addlabels below
	 Font =>  $font      # explicitly set the font for contour labels

	 If ContourVals is specified ContourInt, ContourMin, and ContourMax
	 are ignored.  If no options are specified, the algorthym tries to
	 choose values based on the data supplied.  Font can also be specified or
	 overwritten by the addlabels() function below.

   addlabels()
       Add labels to a contour plot

	 $contour->addlabels($labelint,$segint,$font);

       $labelint is the integer interval between labeled contours.  If you have 8 countour levels and specify $labelint=3 addlabels will attempt
       to label the 1st, 4th, and 7th contours.  $labelint defaults to 1.

       $segint specifies the density of labels on a single contour level.  Each contour level consists of a number of connected line segments,
       $segint defines how many of these segments get labels.  $segint defaults to 5, that is every fifth line segment will be labeled.

   set_colortable($table)
       Sets contour level colors based on the color table.

       $table is passed in as either a piddle of [3,n] colors, where n is the number of contour levels, or as a reference to a function which
       expects the number of contour levels as an argument and returns a [3,n] piddle.	It should be straight forward to use the
       PDL::Graphics::LUT tables in a function which subsets the 256 colors supplied by the look up table into the number of colors needed by
       Contours.

   coldhot_colortable()
       A simple colortable function for use with the set_colortable function.

       coldhot_colortable defines a blue red spectrum of colors where the smallest contour value is blue, the highest is red and the others are
       shades in between.

perl v5.14.2							    2011-03-30						       TriD::Contours(3pm)

Linux and UNIX Man Pages

pdl::graphics::pgplotoptions(3) [redhat man page]

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