Table of Contents
plabort: Error abort
plAlloc2dGrid: Allocate a block of memory
for use as a 2-d grid of type PLFLT.
plClearOpts: Clear internal option table info
structure.
plexit: Error exit
plFree2dGrid: Free the memory associated
with a 2-d grid allocated using plAlloc2dGrid.
plGetCursor: Wait for graphics input event and translate to world coordinates.
plgfile: Get output file handle
plMergeOpts: Merge use option table into
internal info structure.
plMinMax2dGrid: Find the minimum and
maximum of a 2d grid allocated using plAlloc2dGrid.
plOptUsage: Print usage and syntax message.
plMergeOpts: Reset internal option table
info structure.
plsabort: Set abort handler
plSetUsage: Set the strings used in usage
and syntax messages.
plsexit: Set exit handler
plsfile: Set output file handle
pltr0: Identity transformation for grid to world
mapping
pltr1: Linear interpolation for grid to world
mapping using singly dimensioned coordinate arrays
pltr2: Linear interpolation for grid to world
mapping using doubly dimensioned coordinate arrays (column
dominant, as per normal C 2d arrays)
The purpose of this chapter is to document the PLplot C functions that are
currently not part of the common API,
either because they are C/C++ specific utility
functions (e.g. plAlloc2dGrid, plFree2dGrid) or because they are not
easily implemented in other languages (e.g. plGetCursor). Some of these
functions are used in the examples and may be helpful for other users of
plplot.
This chapter also documents some of the data types and structures defined by plplot and used by the functions.
plabort
( | message); |
This routine is to be used when something goes wrong that doesn't
require calling plexit but for which there is no useful recovery.
It calls the abort handler defined via plsabort, does some cleanup
and returns. The user can supply his/her own abort handler and pass it
in via plsabort.
message
(char *, input)
Abort message.
This function is currently available in C, f77, f95 and python.
This function is used in example 20.