看看下面的类(单向@OneToMany) @Entity
public class Team {
private Integer id = -1;
@Id
@GeneratedValue
public Integer getId() {
return this.id;
}
private List<Player> pl
使用O'Reilly's Data Mashups in R作为灵感,我试图在Salt Lake County的一个shapefile上绘制少量地址,犹他州发现here。 我有数据帧geoTable: > geoTable
address Y X EID
1 130 E 300 S 40.76271 -111.8872 1
2 875 E 900 S 40.74992 -11