The GPLOT Procedure

Example 6: Generating an Overlay Plot

Procedure features:

PLOT statement options:

	LEGEND=
	OVERLAY

Other features:

LEGEND statement

SYMBOL statement

Data set:

REFLIB.STOCKS

Sample library member:

GR21N06

[IMAGE]

In this example, one PLOT statement plots both the HIGH and LOW variables against the variable YEAR using two plot requests. The OVERLAY option on the PLOT statement determines that both plot lines appear on the same graph. The other PLOT options scale the vertical axis, add a reference line to the plot, and specify the number of minor tick marks on the axes. The SYMBOL, AXIS,and LEGEND statements modify the plot symbols, axes, and legend.

Note: If the OVERLAY option were not specified, each plot request would generate a separate graph. [cautionend]

libname reflib 'SAS-data-library'; goptions reset=global gunit=pct border cback=white colors=(black blue green red) ftitle=swissb ftext=swiss htitle=6 htext=4;

title1 'Dow Jones Yearly Highs and Lows'; footnote1 h=3 j=l ' Source: 1997 World Almanac' j=r 'GR21N06 ';

symbol1 color=red interpol=join value=dot height=3; symbol2 font=marker value=C color=blue interpol=join height=2;

axis1 order=(1955 to 1995 by 5) offset=(2,2) label=none major=(height=2) minor=(height=1) width=3; axis2 order=(0 to 6000 by 1000) offset=(0,0) label=none major=(height=2) minor=(height=1) width=3;

legend1 label=none shape=symbol(4,2) position=(top center inside) mode=share;

proc gplot data=reflib.stocks; plot high*year low*year / overlay legend=legend1 vref=1000 to 5000 by 1000 lvref=2 haxis=axis1 hminor=4 vaxis=axis2 vminor=1; run; quit;

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