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Yorick

Basics

A tutorial-like introductory chapter.

Arrays

Using array syntax.

Graphics

How to plot things.

Embedding

Embedding compiled code in a custom Yorick.





All subsections

Basic Ideas

  • Simple Statements
  • Flow control Defining functions, conditionals, and loops.
  • Environment How to use Yorick's interpreted environment.

    Simple Statements

  • Define variable
  • Call procedure
  • Print expression

    Flow Control Statements

  • Define function
  • Define procedure
  • Conditionals Conditionally executing statements.
  • Loops Repeatedly executing statements.
  • Scoping Local and external variables.

    Conditional Execution

  • if-else constructs
  • logical operators

    Loops

  • while and do
  • for
  • goto How to break, continue, and goto from a loop body.

    Variable scope

  • extern
  • local

    The Interpreted Environment

  • Starting Starting, stopping, and interrupting Yorick.
  • Include How to read Yorick statements from a file.
  • Help Using the help command.
  • Info Getting information about a variable.
  • Prompts What Yorick prompts mean.
  • Shell commands Issuing shell commands from within Yorick.
  • Errors What to do when Yorick detects an error.

    Include files

  • Sample include
  • Comments
  • DOCUMENT The help command recognizes special comments.
  • Include path Directories Yorick searches for include files.
  • Customizing How to execute Yorick statements at startup.

    Error Messages

  • Runtime errors
  • Simple debugging

    Using Array Syntax

  • Creating Arrays How to originate arrays.
  • Interpolating Interpolation functions.
  • Indexing How to reference array elements.
  • Sorting How to sort an array.
  • Transposing How to change the order of array dimensions.
  • Broadcasting Making arrays conformable.
  • Dimension Lists

    Indexing

  • Scalar Index Scalar indices and array order.
  • Index Range Selecting a range of indices.
  • Nil Index Nil index refers to an entire dimension.
  • Index List Selecting an arbitrary list of indices.
  • Pseudo-Index Creating a pseudo-index.
  • Negative Index Numbering a dimension from its last element.
  • Rubber-Index Using a rubber index.
  • Matrix Multiply Marking an index for matrix multiplication.
  • Statistical Rank reducing (statistical) range functions.
  • Finite Difference Rank preserving (finite difference) range functions.

    Graphics

  • Plotting primitives The basic drawing functions.
  • Plot limits Setting plot limits, log scaling, etc.
  • Display list The display list model.
  • Hardcopy How to get it.
  • Graphics style How to change it.
  • Query and edit Seeing legends and making minor changes.
  • pldefault Setting (non-default) defaults.
  • Custom plot functions Combining the plotting primitives.
  • Animation Spielberg look out.
  • 3D graphics An experimental interface.

    Primitive plotting functions

  • plg Plot graph.
  • pldj Plot disjoint lines.
  • plm Plot quadrilateral mesh.
  • plc Plot contours.
  • plf Plot filled quadrilateral mesh.
  • pli Plot image.
  • plfp Plot filled polygons.
  • plv Plot vectors.
  • plt Plot text.

    Plot limits and relatives

  • limits Set plot limits.
  • logxy Set log axis scaling.
  • gridxy Set grid lines.
  • palette Set color palette.
  • Color model More about color.

    limits

  • mouse zooming How to zoom by mouse clicks.
  • saving limits Save and restore plot limits.
  • square limits Assure that circles are not ellipses.

    Managing a display list

  • fma Frame advance (begin next picture).
  • multiple windows How to get them.

    Getting hardcopy

  • Color hardcopy Dumping palettes into hardcopy files.
  • CGM hardcopy Caveats about binary CGM format.
  • EPS hardcopy Encapsulated PostScript output.

    Graphics style

  • style keyword Accessing predefined graphics styles.
  • style.i Bypassing predefined graphics styles.
  • plsys Multiple coordinate systems.
  • ticks and labels How to change them.

    Queries, edits, and legends

  • legends Setting plot legends.
  • plq and pledit The plot query and edit functions.

    3D graphics interfaces

  • 3D mapping Changing your viewpoint.
  • 3D lighting The 3D lighting model.
  • 3D gnomon Gnomon indicates axis orientation.
  • plwf The plot wire frame interface.
  • slice3 The slice and isosurface interface.
    • LLNL Disclaimers