SetErrorBarShape — Select line or tee-style error bars
$plot->SetErrorBarShape($ebs
)
SetErrorBarShape
selects the shape used for error
indicators. Two shapes are available: 'tee' puts a short horizontal line at
the top and bottom of each error bar, and 'line' does not.
The default error bar shape is 'tee'.
This is only used with error plots (data types data-data-error and data-data-yx-error).
All lines in a plot use the same error bar shape.