jiayuasu commented on a change in pull request #514:
URL: https://github.com/apache/incubator-sedona/pull/514#discussion_r592738688
##########
File path:
sql/src/main/scala/org/apache/spark/sql/sedona_sql/expressions/Functions.scala
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@@ -727,6 +728,88 @@ case class ST_MinimumBoundingCircle(inputExpressions:
Seq[Expression])
}
+/**
+ * Return a linestring being a substring of the input one starting and ending
at the given fractions of total 2d length.
+ * Second and third arguments are Double values between 0 and 1. This only
works with LINESTRINGs.
+ *
+ * @param inputExpressions
+ */
+case class ST_LineSubString(inputExpressions: Seq[Expression])
Review comment:
Thank you for your contribution! Not sure whether or not Spark function
name is case sensitive or not. So would you please change the name to
'ST_LineSubstring' to make it consistent with PostGIS?
https://postgis.net/docs/ST_LineSubstring.html
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