prettychart

This library contains:

• A chart server, for use in conjunction with ghci, or other live coding situations. (See Chartpretty.Server & prettychart-watch)
• anyChart, which attempts to convert text (of numbers) to a chart. (See Chartpretty.Any)
• Some useful chart patterns that didn’t make the cut in chart-svg (See Chartpretty.Charts)

Usage

live

The server can be used to view and develop chart-svg charts.

(display, quit) <- startChartServer Nothing
display lineExample

Setting phasers to stun... (port 9160) g(hcctir>l -c to Tqruuiet
)

file serving

prettychart-watch can watch a directory and serve new or modified charts.

prettychart-watch --watch --filepath other --port 3566

writeChartOptions "other/test.svg" (lineExample)

ghci integration

Add this to your .ghci.conf file to automatically go into :prettychart mode.

-- :set -package prettychart
:{
:def! prettychart \_ -> pure $ unlines [
  "import Prettychart",
  "(sendChart, quitChartServer) <- startChartServer Nothing",
  "printc=printChart False sendChart",
  ":set -interactive-print printc"
  ]
:}

:{
:def! noprettychart \_ -> pure $ unlines [
  "quitChartServer",
  ":set -interactive-print print"
  ]
:}

:prettychart

ghci| ghci| ghci| ghci| ghci| ghci| ghci|
> ghci| ghci| ghci| ghci| ghci|
> Setting phasers to stun... (port 9160) (ctrl-c to quit)

[1..200]

:noprettychart

Development

:r
:set -Wno-type-defaults
:set -Wno-name-shadowing
:set -XOverloadedStrings
:set -XTupleSections
:set -XOverloadedLabels
import Chart
import Chart.Examples
import Optics.Core
import Prettychart.Charts
import Prettychart.Any
import Prettychart.Server
import Data.Time.Calendar
import qualified Data.Map as Map
import Data.Text (Text,pack)
import qualified Data.Text as Text
import qualified Data.Text.IO as Text
import Data.Time
import qualified Data.List as List
import Control.Category ((>>>))
print "ok"
(display, quit) <- startChartServer Nothing
display lineExample

[4 of 4] Compiling Prettychart      ( src/Prettychart.hs, interpreted ) [Flags changed]
Ok, four modules reloaded.
"ok"

Prettychart.Any Examples

single list

10 or less elements => bar chart

xs = [0..9]

either Text.putStrLn (writeChartOptions "other/list1a.svg") $ anyChart (pack . show $ xs)

either Text.putStrLn (writeChartOptions "other/list1a.svg") $ anyChart (pack . show $ xs)

>1000 elements => histogram

xs = sin <$> [0..2000]

either Text.putStrLn (writeChartOptions "other/list1b.svg") $ anyChart (pack . show $ xs)

< 1000 && > 10 => line chart

In between goes for a line chartIn between goes for a line chart.

xs = sin . (/100) <$> [0..500]

either Text.putStrLn (writeChartOptions "other/list1c.svg") $ anyChart (pack . show $ xs)

double list

< 4 lists && < 10 values per list => bar chart

xs = [(1+) . sin <$> [0..8], (1+) . cos <$> [0..8]]
xs

[[1.0,1.8414709848078965,1.9092974268256817,1.1411200080598671,0.2431975046920718,4.1075725336861546e-2,0.7205845018010741,1.656986598718789,1.989358246623382],[2.0,1.5403023058681398,0.5838531634528576,1.0007503399554585e-2,0.34635637913638806,1.2836621854632262,1.960170286650366,1.7539022543433047,0.8544999661913865]]

either Text.putStrLn (writeChartOptions "other/dlista.svg") $ anyChart (pack . show $ xs)

square => surface chart

iter2 f xs ys = f <$> xs <&> flip fmap ys -- or (\a -> f a <$> ys) <$> xs
xs = iter2 (*) (fmap sin [1..20]) (fmap cos [1..20]) :: [[Double]]
:t xs
length xs
fmap length xs

xs :: [[Double]]
20
[20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20]

either Text.putStrLn (writeChartOptions "other/dlistb.svg") $ anyChart (pack . show $ xs)

tuple list [(Double, Double)] => scatter

xs = zip (fmap (sin . (0.06*)) [1..100]) (fmap (cos . (0.06*)) [1..100])
:t xs

xs
  :: (TrigField b1, TrigField b2, Fractional b1, Fractional b2,
      Enum b1, Enum b2) =>
     [(b1, b2)]

either Text.putStrLn (writeChartOptions "other/dtuple.svg") $ anyChart (pack . show $ xs)

double tuple list [(Double, Double)] => scatter

iter2 f xs ys = f <$> xs <&> flip fmap ys -- or (\a -> f a <$> ys) <$> xs


xs = iter2 (\s (x,y) -> (s*x, s*y)) ((0.1*) <$> [1..10]) (zip (fmap (sin . (0.06*)) [1..100]) (fmap (cos . (0.06*)) [1..100]))
:t xs

> >
xs :: (Fractional b, Enum b, TrigField b) => [[(b, b)]]

either Text.putStrLn (writeChartOptions "other/dtupleb.svg") $ anyChart (pack . show $ xs)

(Text, Double) tuple list

xs = (\x -> (show x, x)) <$> [0..9]

either Text.putStrLn (writeChartOptions "other/tdtuple.svg") $ anyChart (pack . show $ xs)