Question: Why is there no ToPlot PlotBars

[petercoppensdatylon]

Hello,

I am new to Haskell in general and certainly to the Haskell Chart package.

While learning I was trying to change example 1 to render a barchart. But I run into the fact that there seems not be an instance of ToPlot for PlotBars.

E.g. code below gives a compile error: No instance for (ToPlot PlotBars) arising from a use of ‘plot’

`
bvals :: [(String, [Double])]
bvals = [ ("b1", [61]),("b2", [22]),("b3", [42]),("b4", [32]),("b5", [1])]

pb3 :: EC (Layout PlotIndex Double) ()
pb3 = do
let dd = addIndexes (bvals ^.. traverse . _2)
let xx = bars [ "Title"] dd
plot xx

`

I can create a barchart in other ways following other examples, but I was wondering whether there is a reason for this missing instance or just something that was not implemented (yet)

Tx!

Peter