PointM
A PointM consists of a pair of double-precision coordinates
in the order X, Y, plus a measure M. The following table shows PointM
byte stream contents.
| Position | Field | Value | Type | Number | Byte order |
|---|---|---|---|---|---|
| Byte 0 | Shape Type | 21 | Integer | 1 | Little endian |
| Byte 4 | X | X | Double | 1 | Little endian |
| Byte 12 | Y | Y | Double | 1 | Little endian |
| Byte 20 | M | M | Double | 1 | Little endian |