Chapter 16: Quickplots

This chapter presents some quickplots that are collections of DISLIN routines for displaying data with one statement. Axis scaling is done automatically by the quickplots. By default, graphical output is sent to the screen.

16.1 Plotting Curves

Q P L O T

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.

16.2 Scatter Plots

Q P L S C A

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.

16.3 Bar Graphs

Q P L B A R

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.

16.4 Pie Charts

Q P L P I E

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.

16.5 3-D Colour Plots

Q P L C L R

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.

16.6 Surface Plots

Q P L S U R

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.

16.7 Contour Plots

Q P L C O N

QPLCON makes a contour plot of a matrix.

The call is: CALL QPLCON (ZMAT, IXDIM, IYDIM, NLV) level 0, 1
or: void qplcon (float *zmat, int ixdim, int iydim, int nlv);

ZMAT is a matrix with the dimension (IXDIM, IYDIM) containing the function values.
IXDIM, IYDIM are the dimensions of ZMAT.
NLV is the number of contour levels that should be generated.

16.8 Setting Parameters for Quickplots

Quickplots can be called in level 0 and in level 1 of DISLIN. If they are called in level 0, the statements CALL METAFL ('CONS') and CALL DISINI are executed by quickplots. If they are called in level 1, these statements will be suppressed. This means that programs can change the output device of quickplots and define axis names and titles if they call quickplots in level 1 after a call to DISINI. The following example defines axis names and a title for QPLOT:


                   CALL METAFL ('CONS')
                   CALL DISINI

                   CALL NAME ('X-axis', 'X')
                   CALL NAME ('Y-axis', 'Y')
                   CALL TITLIN ('This is a Title', 2)
                   CALL QPLOT (XRAY, YRAY, N)
                   END
Next | Previous | Contents