WKT

 WKT（Well-known Text）可以通过文本来描述几何对象。下面的例子可以比较快速、直观地说明什么是WKT：

地理位置坐标示例：

LINESTRING(119.6672583 29.8074667,119.66730629999999 29.8078267,119.6673963 29.8075837,119.6671803 29.8073937,119.6672103 29.8074557,119.6673503 29.8072187,119.6673383 29.8069837,119.6674353 29.8067657,119.66757129999999 29.8071207,119.6676653 29.807461699999998,119.6675303 29.807233699999998,119.6677763 29.8069387)