xfplot

Section: User Commands (1)
Updated: 10 Sep 2001
Index

NAME

xfplot - create (control) surface plots for xfl-based fuzzy systems

SYNOPSIS

xfplot [ -O opsfile ] [ -o outprefix ] [ -r ] [ -s samples ] [ -v var:value ] [ -w ] -x variable -y variable -z variable xflfile

DESCRIPTION

xfplot creates a (control) surface plot from the behavior of an xfl-defined fuzzy system using two inputs (defined by -x and -y) and one output (defined by -z), with the rest of the inputs fixed to a user-configurable value.

The actual building of the surface data is done by means of a C program derived from the xfl definition of the system. xfplot automatically compiles and executes the program.

Data is generated in a format suitable for parametric surfaces as defined by gnuplot(1) and xfplot can be directed to automatically start the surface viewer (which is the default) or simply generate the data file.

By default, the C source file, the executable and the data file are generated in a temporary directory, defined by the environment variable FSTMPDIR ("/tmp" if not set). This behavior can be modified to store source, executable and data files using an user configurable prefix

OPTIONS

-O opsfile: Use opsfile as the fuzzy operations file (see xfc(1) for more details).
-o outprefix: Use outprefix as the prefix for the output file. This prefix is prepended to the strings "Splot.c", "Splot" and ".splot" to form the file names corresponding to C source, executable and data file, respectively. By default, a temporary directory and a system-generated temporary prefix are used.
-r: Do not start the surface viewer automatically when data have been generated. This option cannot be used if files are going to be stored in a temporary directory (i.e., -o is not used).
-s samples: Use samples as the number of values of the inputs which will define the parametric surface. If not specified, 20 values per variable are employed.
-v var:value: Set value as the fixed value for input var, instead of the center of the universe of discourse defined for the variable in the xfl source file (which is the default).
-w: Suppresses the printing of warning messages on stderr.

ENVIRONMENT

FSCCOMPILER: Defines the C compiler to be used for building the program that creates the surface plot. Defaults to "cc" if not set.
FSTMPDIR: Defines the directory to be used for temporary files, if the -o option is not used. Defaults to "/tmp" if not set.

FILES

libfrt.a: Runtime library used by the surface data generation code.