The GMAP Procedure

Example 2: Specifying Response Levels in a Block Map

Procedure features:

BLOCK statement options:

	LEGEND=
	LEVELS=
	SHAPE=
	XVIEW=
	ZVIEW=

Other features:

LEGEND statement

PATTERN statement

Data set:

REFLIB.SITES

Sample library member:

GR19N02

[IMAGE]

This example uses LEVELS= to specify the number of response levels for the blocks. LEVELS= tells GMAP how many response levels and GMAP calculates the midpoints. Eight PATTERN statements explicitly define a color for each of these response levels.

A single PATTERN statement uses the REPEAT= option to define an empty map/plot pattern outlined in black for all the map areas.

The example also changes the viewpoint by rotating the map to provide a better view of the northeast states. As a result, the blocks appear shorter.

libname reflib 'SAS-data-library'; libname maps 'SAS-data-library'; goptions reset=global gunit=pct border cback=white colors=(black blue green red) ctext=black ftext=swiss htitle=6 htext=3;

title1 'Hazardous Waste Site Installations (1997)'; footnote1 j=r 'GR19N02 ';

pattern1 value=solid color=lime; pattern2 value=solid color=cyan; pattern3 value=solid color=green; pattern4 value=solid color=blue; pattern5 value=solid color=lipk; pattern6 value=solid color=red; pattern7 value=solid color=gray; pattern8 value=solid color=black;

pattern9 value=mempty color=black repeat=50;

legend1 value=(justify=left) label=('Number' justify=left 'of Sites:' position=(middle left)) frame;

proc gmap map=maps.us data=reflib.sites; id state; block sites / levels=8 shape=cylinder xview=0.75 zview=5 legend=legend1; run; quit;

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