Adding a constant value on a Report's TimeSeriesChart with a refresh

[pturmel]

I would replace the range axis with one that dynamically computed its upper/lower range from the data and any auxiliary values whenever it is asked for upper/lower.

I vaguely recall doing this at one point to deal with Vision's classic chart not calling configureChart() after fresh data arrives. But I only found this:

Change background color of vision chart

Sure. I have this in a chart_util library script: from org.jfree.chart.plot import ValueMarker from java.awt import Color, BasicStroke # # Supply a function to obtain the range value to mark with the given # color and stroke. class DynValueMarker(ValueMarker): def __init__(self, callable, clr, stroke): super(ValueMarker, self).__init__(0.0, clr, stroke) self.callable = callable def getValue(self): return self.callable() You apply the above in configureChart with a function that reads …

The technique for delegating range requests to other data instead of constants would be similar to that dynamic range marker.