几何对象裁剪

使用说明

几何对象裁剪使用输入的面对象对数据集进行裁剪。返回裁剪后的结果要素数据集（FeatureRDD）。

分布式几何对象裁剪提供普通【几何对象裁剪】、【多几何对象裁剪】和【DSF几何对象裁剪】三种功能，差别在于输入的数据源不同：

【几何对象裁剪】能够输入从多种矢量数据源读取的数据集，如SHP、PostGIS、Oracle等；
【多几何对象裁剪】能够使用多个面对象裁剪要素数据集；
【DSF几何对象裁剪】仅能够输入从SuperMap DSF数据源中读取的数据集。

若使用DSF作为分布式分析数据源，能够提高分析效率，执行分析的数据源需要具有相同的地理分区索引，算子结果输出要素数据集。

裁剪对象

对矢量数据进行裁剪的裁剪对象，必须是面对象，支持以WKT与GeoJson格式进行表述。其中，GeoJson格式只取geometry的值部分。

以下为裁剪多边形参数的填写示例：

格式	值
WKT	MULTIPOLYGON(((119.4568864012999 42.6165414465,119.4946108001999 42.6246252463,119.533682499 42.6246252463,119.5727541978 42.6165414465,119.5875744974 42.5990265471,119.6037420969 42.5842062475,119.634729996 42.5720805479,119.6535921953999 42.55726024829999,119.6657178951 42.5370507489,119.6764962947999 42.4979790501,119.6805381946 42.4791168506,119.6657178951 42.4562127513,119.6441610956999 42.4386978518,119.6306880961 42.4144464525,119.6293407962 42.39558425309999,119.6387718958999 42.365943654,119.6401191957999 42.3524706544,119.6306880961 42.3349557549,119.6252988963 42.30396785579999,119.6118258967 42.28510565639999,119.5687122979999 42.2783691566,119.5606284981999 42.2783691566,119.5323351989999 42.2904948562,119.5161675994999 42.30262055589999,119.5 42.30935705569999,119.4946108001999 42.33091385499999,119.5013473 42.34303955469999,119.5255986992 42.35516525429999,119.5296405991 42.3807639535,119.5282932992 42.39019505329999,119.5013473 42.38750045329999,119.4824851004999 42.3928896532,119.4649702009999 42.3969315531,119.4474553015999 42.4063626528,119.4326350019999 42.42791945209999,119.4056890027999 42.44678165159999,119.3800903035999 42.4642965511,119.3558389042999 42.48181145049999,119.3585335042 42.4966317501,119.3800903035999 42.51549394949999,119.3962579031 42.5545656484,119.3922160032 42.59767924709999,119.4043417027999 42.6111522467,119.4299404020999 42.6111522467,119.4568864012999 42.6165414465)))
GeoJson	{“coordinates”:[[[[119.45688640130,42.61654144650],[119.49461080020,42.62462524630],[119.5336824990,42.62462524630],[119.57275419780,42.61654144650],[119.58757449740,42.59902654710],[119.60374209690,42.58420624750],[119.6347299960,42.57208054790],[119.65359219540,42.55726024830],[119.66571789510,42.53705074890],[119.67649629480,42.49797905010],[119.68053819460,42.47911685060],[119.66571789510,42.45621275130],[119.64416109570,42.43869785180],[119.63068809610,42.41444645250],[119.62934079620,42.39558425310],[119.63877189590,42.3659436540],[119.64011919580,42.35247065440],[119.63068809610,42.33495575490],[119.62529889630,42.30396785580],[119.61182589670,42.28510565640],[119.5687122980,42.27836915660],[119.56062849820,42.27836915660],[119.5323351990,42.29049485620],[119.51616759950,42.30262055590],[119.50,42.30935705570],[119.49461080020,42.3309138550],[119.50134730,42.34303955470],[119.52559869920,42.35516525430],[119.52964059910,42.38076395350],[119.52829329920,42.39019505330],[119.50134730,42.38750045330],[119.48248510050,42.39288965320],[119.4649702010,42.39693155310],[119.44745530160,42.40636265280],[119.4326350020,42.42791945210],[119.40568900280,42.44678165160],[119.38009030360,42.46429655110],[119.35583890430,42.48181145050],[119.35853350420,42.49663175010],[119.38009030360,42.51549394950],[119.39625790310,42.55456564840],[119.39221600320,42.59767924710],[119.40434170280,42.61115224670],[119.42994040210,42.61115224670],[119.45688640130,42.61654144650]]]],“type”:“MultiPolygon”}

格式

值

WKT

MULTIPOLYGON(((119.4568864012999 42.6165414465,119.4946108001999 42.6246252463,119.533682499 42.6246252463,119.5727541978 42.6165414465,119.5875744974 42.5990265471,119.6037420969 42.5842062475,119.634729996 42.5720805479,119.6535921953999 42.55726024829999,119.6657178951 42.5370507489,119.6764962947999 42.4979790501,119.6805381946 42.4791168506,119.6657178951 42.4562127513,119.6441610956999 42.4386978518,119.6306880961 42.4144464525,119.6293407962 42.39558425309999,119.6387718958999 42.365943654,119.6401191957999 42.3524706544,119.6306880961 42.3349557549,119.6252988963 42.30396785579999,119.6118258967 42.28510565639999,119.5687122979999 42.2783691566,119.5606284981999 42.2783691566,119.5323351989999 42.2904948562,119.5161675994999 42.30262055589999,119.5 42.30935705569999,119.4946108001999 42.33091385499999,119.5013473 42.34303955469999,119.5255986992 42.35516525429999,119.5296405991 42.3807639535,119.5282932992 42.39019505329999,119.5013473 42.38750045329999,119.4824851004999 42.3928896532,119.4649702009999 42.3969315531,119.4474553015999 42.4063626528,119.4326350019999 42.42791945209999,119.4056890027999 42.44678165159999,119.3800903035999 42.4642965511,119.3558389042999 42.48181145049999,119.3585335042 42.4966317501,119.3800903035999 42.51549394949999,119.3962579031 42.5545656484,119.3922160032 42.59767924709999,119.4043417027999 42.6111522467,119.4299404020999 42.6111522467,119.4568864012999 42.6165414465)))

GeoJson

{“coordinates”:[[[[119.45688640130,42.61654144650],[119.49461080020,42.62462524630],[119.5336824990,42.62462524630],[119.57275419780,42.61654144650],[119.58757449740,42.59902654710],[119.60374209690,42.58420624750],[119.6347299960,42.57208054790],[119.65359219540,42.55726024830],[119.66571789510,42.53705074890],[119.67649629480,42.49797905010],[119.68053819460,42.47911685060],[119.66571789510,42.45621275130],[119.64416109570,42.43869785180],[119.63068809610,42.41444645250],[119.62934079620,42.39558425310],[119.63877189590,42.3659436540],[119.64011919580,42.35247065440],[119.63068809610,42.33495575490],[119.62529889630,42.30396785580],[119.61182589670,42.28510565640],[119.5687122980,42.27836915660],[119.56062849820,42.27836915660],[119.5323351990,42.29049485620],[119.51616759950,42.30262055590],[119.50,42.30935705570],[119.49461080020,42.3309138550],[119.50134730,42.34303955470],[119.52559869920,42.35516525430],[119.52964059910,42.38076395350],[119.52829329920,42.39019505330],[119.50134730,42.38750045330],[119.48248510050,42.39288965320],[119.4649702010,42.39693155310],[119.44745530160,42.40636265280],[119.4326350020,42.42791945210],[119.40568900280,42.44678165160],[119.38009030360,42.46429655110],[119.35583890430,42.48181145050],[119.35853350420,42.49663175010],[119.38009030360,42.51549394950],[119.39625790310,42.55456564840],[119.39221600320,42.59767924710],[119.40434170280,42.61115224670],[119.42994040210,42.61115224670],[119.45688640130,42.61654144650]]]],“type”:“MultiPolygon”}

注：在模型的导入和导出过程中，会对裁剪多边形参数进行GeoJson格式化处理，该处理并不影响模型使用，您可以自由选择以WKT或GeoJson格式进行裁剪多边形参数设置。

参数说明

【几何对象裁剪】参数：

参数名	默认值	参数释义	参数类型
要素数据集		要素数据集	FeatureRDD
裁剪对象		裁剪对象，必须是面对象	Geometry

【多几何对象裁剪】参数：

参数名	默认值	参数释义	参数类型
要素数据集		要素数据集	FeatureRDD
裁剪对象数组（可选）		裁剪对象数组，必须是面对象。查询对象，该参数可通过连接【大数据矢量管理-基础处理-获取一个几何对象】算子获取，也可输入 wkt 或者 geojson 格式字符串。	Geometry

【DSF几何对象裁剪】参数：

参数名	默认值	参数释义	参数类型
地理分区要素数据集		地理分区要素数据集	DSFFeatureRDD
裁剪对象		裁剪对象，必须是面对象。该参数可通过连接【大数据矢量管理-基础处理-获取一个几何对象】算子获取，也可输入 wkt 或者 geojson 格式字符串。	Geometry