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<title>Graphics/Rendering/Chart/Easy.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE ScopedTypeVariables, TemplateHaskell, TypeSynonymInstances, FlexibleInstances #-}</span>
<a name="line-2"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Graphics.Rendering.Chart.Easy</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Tim Docker 2014</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style (see chart/COPYRIGHT)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Importing the Easy module brings into scope all core functions and types required</span>
<a name="line-9"></a><span class='hs-comment'>-- for working with the chart library. This includes key external dependencies such as</span>
<a name="line-10"></a><span class='hs-comment'>-- Control.Len and Data.Colour. The module also provides several helper functions for</span>
<a name="line-11"></a><span class='hs-comment'>-- quickly generating common plots.</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- Note that chart backends must still be explicitly imported, as some backends cannot</span>
<a name="line-14"></a><span class='hs-comment'>-- be built on all platforms.</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Easy</span><span class='hs-layout'>(</span>
<a name="line-17"></a>
<a name="line-18"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-layout'>,</span>
<a name="line-19"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Default</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span><span class='hs-varop'>.</span><span class='hs-conid'>Names</span><span class='hs-layout'>,</span>
<a name="line-22"></a>
<a name="line-23"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>State</span><span class='hs-layout'>,</span>
<a name="line-25"></a>
<a name="line-26"></a> <span class='hs-varid'>line</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>points</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>bars</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <span class='hs-varid'>setColors</span><span class='hs-layout'>,</span>
<a name="line-30"></a>
<a name="line-31"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Default</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>over</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- overlaps with lens over function</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span><span class='hs-varop'>.</span><span class='hs-conid'>Names</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>State</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="setColors"></a><span class='hs-comment'>-- | Set the contents of the colour source, for</span>
<a name="line-41"></a><span class='hs-comment'>-- subsequent plots</span>
<a name="line-42"></a><span class='hs-definition'>setColors</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EC</span> <span class='hs-varid'>l</span> <span class='hs-conid'>()</span>
<a name="line-43"></a><span class='hs-definition'>setColors</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftCState</span> <span class='hs-varop'>$</span> <span class='hs-varid'>colors</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>cycle</span> <span class='hs-varid'>cs</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="line"></a><span class='hs-comment'>-- | Constuct a line plot with the given title and</span>
<a name="line-46"></a><span class='hs-comment'>-- data, using the next available color.</span>
<a name="line-47"></a><span class='hs-definition'>line</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EC</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotLines</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-48"></a><span class='hs-definition'>line</span> <span class='hs-varid'>title</span> <span class='hs-varid'>values</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftEC</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-49"></a> <span class='hs-varid'>color</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>takeColor</span>
<a name="line-50"></a> <span class='hs-varid'>plot_lines_title</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>title</span>
<a name="line-51"></a> <span class='hs-varid'>plot_lines_values</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>values</span>
<a name="line-52"></a> <span class='hs-varid'>plot_lines_style</span> <span class='hs-varop'>.</span> <span class='hs-varid'>line_color</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>color</span>
<a name="line-53"></a>
<a name="line-54"></a><a name="points"></a><span class='hs-comment'>-- | Construct a scatter plot with the given title and data, using the</span>
<a name="line-55"></a><span class='hs-comment'>-- next available color and point shape.</span>
<a name="line-56"></a><span class='hs-definition'>points</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EC</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotPoints</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-57"></a><span class='hs-definition'>points</span> <span class='hs-varid'>title</span> <span class='hs-varid'>values</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftEC</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-58"></a> <span class='hs-varid'>color</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>takeColor</span>
<a name="line-59"></a> <span class='hs-varid'>shape</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>takeShape</span>
<a name="line-60"></a> <span class='hs-varid'>plot_points_values</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>values</span>
<a name="line-61"></a> <span class='hs-varid'>plot_points_title</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>title</span>
<a name="line-62"></a> <span class='hs-varid'>plot_points_style</span> <span class='hs-varop'>.</span> <span class='hs-varid'>point_color</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>color</span>
<a name="line-63"></a> <span class='hs-varid'>plot_points_style</span> <span class='hs-varop'>.</span> <span class='hs-varid'>point_shape</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>shape</span>
<a name="line-64"></a> <span class='hs-varid'>plot_points_style</span> <span class='hs-varop'>.</span> <span class='hs-varid'>point_radius</span> <span class='hs-varop'>.=</span> <span class='hs-num'>2</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="bars"></a><span class='hs-comment'>-- | Construct a bar chart with the given titles and data, using the</span>
<a name="line-67"></a><span class='hs-comment'>-- next available colors </span>
<a name="line-68"></a><span class='hs-definition'>bars</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotValue</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-conid'>BarsPlotValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EC</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-conid'>PlotBars</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-69"></a><span class='hs-definition'>bars</span> <span class='hs-varid'>titles</span> <span class='hs-varid'>vals</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftEC</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-70"></a> <span class='hs-varid'>styles</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sequence</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>mkStyle</span> <span class='hs-varid'>takeColor</span> <span class='hs-keyglyph'>|</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>titles</span><span class='hs-keyglyph'>]</span>
<a name="line-71"></a> <span class='hs-varid'>plot_bars_titles</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>titles</span>
<a name="line-72"></a> <span class='hs-varid'>plot_bars_values</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>vals</span>
<a name="line-73"></a> <span class='hs-varid'>plot_bars_style</span> <span class='hs-varop'>.=</span> <span class='hs-conid'>BarsClustered</span>
<a name="line-74"></a> <span class='hs-varid'>plot_bars_spacing</span> <span class='hs-varop'>.=</span> <span class='hs-conid'>BarsFixGap</span> <span class='hs-num'>30</span> <span class='hs-num'>5</span>
<a name="line-75"></a> <span class='hs-varid'>plot_bars_item_styles</span> <span class='hs-varop'>.=</span> <span class='hs-varid'>styles</span>
<a name="line-76"></a> <span class='hs-keyword'>where</span>
<a name="line-77"></a> <span class='hs-varid'>mkStyle</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>solidFillStyle</span> <span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>solidLine</span> <span class='hs-num'>1.0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>opaque</span> <span class='hs-varid'>black</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
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