Name: QPLOT   30
QPLOT connects data points with lines.
The call is:  CALL QPLOT (XRAY, YRAY, N)              level 0, 1
         or:  void qplot (float *xray, float *yray, int n);
XRAY, YRAY    are arrays that contain X- and Y-coordinates.
N             is the number of data points.
Name: QPLSCA  30
QPLSCA marks data points with symbols.
The call is:  CALL QPLSCA (XRAY, YRAY, N)             level 0, 1
         or:  void qplsca (float *xray, float *yray, int n);
XRAY, YRAY    are arrays that contain X- and Y-coordinates.
N             is the number of data points.
Name: QPLBAR  30
QPLBAR plots a bar graph.
The call is:  CALL QPLBAR (XRAY, N)                   level 0, 1
         or:  void qplbar (float *xray, int n);
XRAY          is an  array containing data points.
N             is the number of data points.
Name: QPLPIE  30
QPLPIE plots a pie chart.
The call is:  CALL QPLPIE (XRAY, N)                   level 0, 1
         or:  void qplpie (float *xray, int n);
XRAY          is an  array containing data points.
N             is the number of data points.
Name: QPLCLR  30
QPLCLR makes a 3-D colour plot of a matrix.
The call is:  CALL QPLCLR (ZMAT, IXDIM, IYDIM)        level 0, 1
         or:  void qplclr (float *zmat, int ixdim, int iydim);
ZMAT          is a matrix  with the dimension  (IXDIM, IYDIM)
              containing the function values.
IXDIM, IYDIM  are the dimensions of ZMAT.
Name: QPLSUR  30
QPLSUR makes a surface plot of a matrix.
The call is:  CALL QPLSUR (ZMAT, IXDIM, IYDIM)        level 0, 1
         or:  void qplsur (float *zmat, int ixdim, int iydim);
ZMAT          is a matrix  with the dimension  (IXDIM, IYDIM)
              containing the function values.
IXDIM, IYDIM  are the dimensions of ZMAT.
Name: QPLCON  30
QPLCON makes a contour plot of a matrix.
The call is:  CALL QPLCON (ZMAT, IXDIM, IYDIM, NLEV) 
                                                   level 0, 1
         or:  void qplcon (float *zmat, int ixdim, int iydim,
                                                   int nlev);
ZMAT          is a matrix  with the dimension  (IXDIM, IYDIM)
              containing the function values.
IXDIM, IYDIM  are the dimensions of ZMAT.
NLEV          is the number of contour levels  that should be
              generated.