Renders an Apache ECharts scatter chart on a standard Cartesian axis.
ECHARTSSCATTER — set as ReportType in def_report.
def Render(self, Param1="", Param2="", Param3="") -> str:
Inherited from ObjReportEchartsbase. Param1, Param2, and Param3 are forwarded in the RPC payload for SQL token substitution. Returns an HTML string containing a styled panel and an ECharts initialisation script.
Uses the Apache ECharts JS library. Sets self.Type = "scatter". The first column of the SQL result provides X-axis categories; subsequent numeric columns are rendered as scatter series. Option building is handled by ObjReportEchartsbase._build_cartesian_option.