plucky (3) plscompression.3plplot.gz

NAME

       plscompression - Set device-compression level

SYNOPSIS

       plscompression(compression)

DESCRIPTION

       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.

ARGUMENTS

       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.

AUTHORS

       Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot  over  its
       long history.

SEE ALSO

       PLplot documentation at http://plplot.org/documentation.php.

                                                 February, 2025                          PLSCOMPRESSION(3plplot)