GINSIDE Procedure
PROC GINSIDE Statement
The GINSIDE procedure compares a data set of X and
Y coordinates to a map data set containing map polygons and determines
whether the X and Y points fall inside or outside of the map polygons.
| Requirement: | Three data sets are required: a data set containing points, a map data set, and an output data set. |
Syntax
PROC GINSIDE
DATA=points-data-set
MAP=map-data-set
OUT=output-data-set
< INSIDEONLY>
<INCLUDEBORDER>;
DATA=points-data-set
MAP=map-data-set
OUT=output-data-set
< INSIDEONLY>
<INCLUDEBORDER>;
Summary of Optional Arguments
includes points that are on the border of a polygon
in the output data set.
causes the output data set to contain only points
that are inside the map polygons.
Required Arguments
- DATA=points-data-set
-
specifies an input data set that contains the X and Y coordinates of the individual points that are being compared to the map polygons.Note:If this data set contains the same ID variable (or variables) as does the map, the value should be set to MISSING so that the points are not considered to be part of the boundary of the polygon.
- MAP=map-data-set
-
specifies the map data set that contains the polygons that you want to compare the points in the input data set to. This data must conform to the rules for a map data set and contain variables X and Y and one or more ID variables. The ID statement should name that variable or variables.Restriction:The X and Y values in the input data set must be in the same projection system and units as the X and Y in the map data set. So, if the map data set has unprojected X and Y values in radians, then the point data set X and Y variable values must also be unprojected and in radians.