error: value centroid is not a member of com.esri.core.geometry.Polygon

从报告中所示的 com.esri.core.geometry.Polygon 的 Spark shell imports 和 OperatorImportFromWkt.local().execute 调用开始。检查 Polygon API 和 poly 的推断类型，然后对照 centroid 的文档化入口点或相关测试；完成的标准是确定这是 API 问题还是 Scala 使用问题，并记录受支持的调用方式。

Hi i am trying to use your library in spark shell environement but i have this error message:

:36: error: value centroid is not a member of com.esri.core.geometry.Polygon

My code :

spark-shell --master yarn --packages com.esri.geometry:esri-geometry-api:2.1.0

**import com.esri.core.geometry.Geometry
import com.esri.core.geometry.Polygon

val polygone = "POLYGON((4.745655459623948 46.03524426717903,4.745474046571832 46.035518174904055,4.74063090530349 46.04295685260622,4.739925882208126 46.044547519914246,4.739483609776077 46.04626745631142,4.739525128019815 46.047211663812355,4.739825175736136 46.048150103132244,4.740250385460172 46.04899654987392,4.741872451093781 46.05062714796118,4.743407686504395 46.05171953368259,4.747262145106063 46.053369755378974,4.751383858596383 46.055239098889565,4.753175276721485 46.05628146390567,4.755169011518056 46.05749901172311,4.75661821455738 46.05884025314148,4.757293283105074 46.05947830843228,4.758004296858232 46.06022839197492,4.758948494130379 46.061108160671,4.759081962267134 46.061195261252315,4.760737772227097 46.06061922955403,4.761719663784567 46.0601707369959,4.765096689865299 46.05832039797115,4.767379341111917 46.05732648395931,4.771955501771072 46.0555626231788,4.774437468314938 46.05469875488001,4.777836928008835 46.054085261406435,4.779689110155892 46.05215478789901,4.779868950123478 46.051835812485,4.780103563084089 46.05129079690939,4.781085536976064 46.04865878444159,4.781551741322944 46.04464325432172,4.775383402380884 46.04401133253986,4.774671046394766 46.04398195310052,4.77298489972034 46.043838098435366,4.7690157048809 46.04324888213076,4.768949645555281 46.04320577772445,4.768861191503296 46.04266762819899,4.767707575895149 46.040700441166436,4.765270854408862 46.03772010926994,4.759771208178281 46.03588709341677,4.755999294025783 46.035337603929165,4.750472322601267 46.03604097592636,4.745655459623948 46.03524426717903))"

val poly = OperatorImportFromWkt.local().execute(2,Geometry.Type.Polygon,polygone,null)**

// this last execution produce my error

poly.centroid

// do you think that librairy is not compatible with scala ?
// thank you for help