CODEWITHSUNDEEP
haskellchartsplot
Prasadika
Prasadika

Reputation: 927

Haskell Chart package- error in plotting the chart

I have the following Haskell code with me.

import Graphics.Rendering.Chart.Simple

range, data1, data2 :: [Double]
range = [0..10]
data1 = [1,4,2,3,4,5,2,3,4,1]
data2 = [1,2,2,7,4,3,7,1,3,1]

main = plotPDF "chart-example.pdf" range data1 Solid data2 Solid

I get the below error on executing it. anyone who can help me to resolve it.

enter image description here

Upvotes: 1

Views: 197

Answers (2)

timbod
timbod

Reputation: 791

The issue is fixed in the new 1.2 release of the library. The Simple API (which this example requires) is now in it's own package: Chart-simple-1.2.

Upvotes: 1

Sjoerd Visscher
Sjoerd Visscher

Reputation: 12000

Chart-1.1 seems to be broken. The only instance of PlotPDFType is

instance (PlotArg a, PlotPDFType r) => PlotPDFType (a -> r)

This is a recursive instance, but there's no base case!

The IO instance is still there in version 0.17. Maybe you can go back to that version. And you should file a bug here: https://github.com/timbod7/haskell-chart/issues

Upvotes: 2

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