plscompression - Set device-compression level
plscompression(compression)
Set device-compression level. Only used for drivers that provide
compression. This function, if used, should be invoked before a call to
plinit(3plplot).
Redacted form: plscompression(compression)
This function is used in example 31.
- compression
(PLINT(3plplot), input)
- The desired compression level. This is a device-dependent value. Currently
only the jpeg and png devices use these values. For jpeg value is the jpeg
quality which should normally be in the range 0-95. Higher values denote
higher quality and hence larger image sizes. For png values are in the
range -1 to 99. Values of 0-9 are taken as the compression level for zlib.
A value of -1 denotes the default zlib compression level. Values in the
range 10-99 are divided by 10 and then used as the zlib compression level.
Higher compression levels correspond to greater compression and small file
sizes at the expense of more computation.
Many developers (who are credited at
http://plplot.org/credits.php) have contributed to PLplot over its long
history.
PLplot documentation at http://plplot.org/documentation.php.