Renders an Apache ECharts pictorial bar chart where bars are drawn using custom symbols.
ECHARTSPICTORIALBAR — 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 = "pictorialBar". The base renderer normalises the type string to "pictorialBar" (camelCase) before passing it to the cartesian option builder. Symbol customisation must be supplied via the echarts_option key in _Options.