 |
| |||
| polygon In the vector type of GIS internal data organization spatial data are conveniently divided into point, line and polygon types. Some vector GIS store information in the form of points, line segments and point pairs; others maintain close lists of points defining polygon regions | |||
|
polygon : 25 短语, 3 学科 |
| 数学 | 10 |
| 生命科学 | 12 |
| 电子产品 | 3 |