Distance and Direction Processing

There are a variety of ways to express a search based on a combination of distance and direction. This section describes by example valid formats which can be used. Leave the field blank if there is no distance qualifier.

Distance Formats

The layout for the ten (10) characters is:

Distance (Three Characters) - Number of miles or kilometers. Always left fill with zeros (0)
Unit of Measure (One Character) - M = miles, K = kilometers
Direction (Two Characters) - N, S, E, W, NE, NW, SE, SW, blanks
Action Code (One Character) - Greater than (Y), Less Than (-), or blank
Distance (Three Characters) - Number of Miles or Kilometers (Upper limit of a range)

Examples
Retrieve locations less than or equal to 9 miles from the reference point.
Distance value = 000
Unit of measure = M
Direction = blanks
Action code = -
Distance value = 009

Retrieve locations between 10 and 25 miles from the reference point.
Distance value = 010
Unit of measure = M
Direction = blanks
Action code = -
Distance value = 025

Retrieve locations between 1 and 15 miles East of the reference point.
Distance value = 001
Unit of measure = M
Direction = Eb (E followed by a blank)
Action code = -
Distance value = 015

Retrieve locations greater than or equal to 20 miles from the reference point.
Distance value = 020
Unit of measure = M
Direction = blanks
Action code = Y
Distance value = 000

Retrieve locations within 10% of 100 kilometers of the reference point.
Distance value = 100
Unit of measure = K
Direction = blanks
Action code = blank
Distance value = 000

Retrieve all locations North of the reference point.
Distance value = 000
Unit of measure = M
Direction = Nb (N followed by a blank)
Action code = Y
Distance value = 000

Distance and Direction Processing

Distance Formats

Examples

Retrieve locations less than or equal to 9 miles from the reference point.

Unit of measure = M

Direction = blanks

Action code = -

Distance value = 009

Retrieve locations between 10 and 25 miles from the reference point.

Distance value = 010

Unit of measure = M

Direction = blanks

Action code = -

Distance value = 025

Retrieve locations between 1 and 15 miles East of the reference point.

Distance value = 001

Unit of measure = M

Direction = Eb (E followed by a blank)

Action code = -

Distance value = 015

Retrieve locations greater than or equal to 20 miles from the reference point.

Distance value = 020

Unit of measure = M

Direction = blanks

Action code = Y

Distance value = 000

Retrieve locations within 10% of 100 kilometers of the reference point.

Distance value = 100

Unit of measure = K

Direction = blanks

Action code = blank

Distance value = 000

Retrieve all locations North of the reference point.

Distance value = 000

Unit of measure = M

Direction = Nb (N followed by a blank)

Action code = Y

Distance value = 000

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