Renders errorbars at various points.
The screen-space width of the endcap bars
endcap_style= Enum("bar", "none", None)¶
The kind of encap to render on error bars
Returns the currently visible screen-space points.
Intended for use with overlays.
data_array can be Nx2 or Nx3. In the former case, each row is treated as (index, value), and this method returns screen X and Y coordinates. In the latter case, each row is treated as (index, value_low, value_high), and the method returns either (x, ylow, yhigh) or (y, xlow, xhigh) depending on self.orientation.
The datasource containing the high values
The datasource containing the low values