1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
-----------------------------------------------------------------------------
-- |
-- Module : Graphics.Rendering.Chart.Plot.Points
-- Copyright : (c) Tim Docker 2006, 2014
-- License : BSD-style (see chart/COPYRIGHT)
--
-- Functions to plot sets of points, marked in various styles.
{-# LANGUAGE TemplateHaskell #-}
module Graphics.Rendering.Chart.Plot.Points(
PlotPoints(..),
-- * Accessors
-- | These accessors are generated by template haskell
plot_points_title,
plot_points_style,
plot_points_values,
) where
import Control.Lens
import Graphics.Rendering.Chart.Geometry
import Graphics.Rendering.Chart.Drawing
import Graphics.Rendering.Chart.Plot.Types
import Data.Default.Class
-- | Value defining a series of datapoints, and a style in
-- which to render them.
data PlotPoints x y = PlotPoints {
_plot_points_title :: String,
_plot_points_style :: PointStyle,
_plot_points_values :: [(x,y)]
}
instance ToPlot PlotPoints where
toPlot p = Plot {
_plot_render = renderPlotPoints p,
_plot_legend = [(_plot_points_title p, renderPlotLegendPoints p)],
_plot_all_points = (map fst pts, map snd pts)
}
where
pts = _plot_points_values p
renderPlotPoints :: PlotPoints x y -> PointMapFn x y -> ChartBackend ()
renderPlotPoints p pmap =
mapM_ (drawPoint ps . pmap') (_plot_points_values p)
where
pmap' = mapXY pmap
ps = _plot_points_style p
renderPlotLegendPoints :: PlotPoints x y -> Rect -> ChartBackend ()
renderPlotLegendPoints p (Rect p1 p2) = do
drawPoint ps (Point (p_x p1) y)
drawPoint ps (Point ((p_x p1 + p_x p2)/2) y)
drawPoint ps (Point (p_x p2) y)
where
ps = _plot_points_style p
y = (p_y p1 + p_y p2)/2
instance Default (PlotPoints x y) where
def = PlotPoints
{ _plot_points_title = ""
, _plot_points_style = def
, _plot_points_values = []
}
$( makeLenses ''PlotPoints )
|
