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
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