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       plscompression - Set device-compression level




       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, 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 have
       contributed to PLplot over its long history.


       PLplot documentation at

                                          February, 2016                  PLSCOMPRESSION(3plplot)