Boundary Flag

The boundary flag property of the spatial index determines how values that fall outside the grid limits are handled.

The following values are recognized:

Value

Symbol

Description

0

DISCARD

Discard values that fall outside the value range.

1

X_LOW_BND

Place values that fall below the lowest x coordinate into the first column.

2

X_UP_BND

Place values that fall above the largest x coordinate into the last column.

3

X_UP_LOW_BND

Place values that fall below the lowest x coordinate into the first column and values that fall above the largest x coordinate into the last column.

4

OVERFLOW_SLOT

Place values that fall outside the value range into an overflow slot.

8

Y_LOW_BND

Place values that fall below the lowest y coordinate into the first column.

16

Y_UP_BND

Place values that fall above the largest y coordinate into the last column.

24

Y_UP_LOW_BND

Place values that fall below the lowest y coordinate into the first column and values that fall above the largest y coordinate into the last column.

9

X_LOW_Y_LOW_BND

Place values that fall below the lowest x coordinate into the first column and values that fall below the lowest y coordinate into the first column.

17

X_LOW_Y_UP_BND

Place values that fall below the lowest x coordinate into the first column and values that fall above the largest y coordinate into the last column.

10

X_UP_Y_LOW_BND

Place values that fall above the largest x coordinate into the last column and values that fall below the lowest y coordinate into the first column.

18

X_UP_Y_UP_BND

Place values that fall above the largest x coordinate into the last column and values that fall above the largest y coordinate into the last column.

11

X_UP_LOW_Y_LOW_BND

Place values that fall below the lowest x coordinate into the first column, values that fall above the largest x coordinate into the last column and values that fall below the lowest y coordinate into the first column.

19

X_UP_LOW_Y_UP_BND

Place values that fall below the lowest x coordinate into the first column, values that fall above the largest x coordinate into the last column and values that fall above the largest y coordinate into the last column.

25

X_LOW_Y_UP_LOW_BND

Place values that fall below the lowest x coordinate into the first column, values that fall below the lowest y coordinate into the first column and values that fall above the largest y coordinate into the last column.

26

X_UP_Y_UP_LOW_BND

Place values that fall above the largest x coordinate into the last column, values that fall below the lowest y coordinate into the first column and values that fall above the largest y coordinate into the last column.

27

X_UP_LOW_Y_UP_LOW_BND

Place values that fall below the lowest x coordinate into the first column, values that fall above the largest x coordinate into the last column, values that fall below the lowest y coordinate into the first column and values that fall above the largest y coordinate into the last column.