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Python+Arcpy操作Points(.shp)转换至Polyline(.shp),仔细研读Points To Line (Data Management)说明,参数说明如下:

Input_Features: The point features to be converted into lines.

Output_Feature_Class:The line feature class which will be created from the input points.

以下参数对生成闭合Polyline尤为重要(Optional)

Line_Field: Each feature in the output will be based on unique values in the Line Field.这里指出同一直线的各点应在某一Field下具有相同的数值,见图 1红框之内在Line1字段之下数值均为1,表示各点均在同一条Polyline。

图 1

Sort_Field: By default, points used to create each output line feature will be used in the order they are found. If a different order is desired, specify a Sort Field.

Close_Line: Specifies whether output line features should be closed. True or False.

举一个例子,从含有4points的.shp转换为1条闭合的Polyline(.shp)文件,转换输出如图 2,

图 2

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