35 lines
1.1 KiB
Smalltalk
35 lines
1.1 KiB
Smalltalk
accessing
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exportTweetsHistogramWithBars: aNumberOfBars
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| tweetsByTimeSpan subtotals tweetsHistogram diagram |
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self tweets ifEmpty: [
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tweetsHistogram := RSChart new.
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tweetsHistogram extent: 800@200.
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tweetsHistogram build.
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tweetsHistogram canvas pdfExporter
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zoomToShapes;
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noFixedShapes;
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fileName: (self folder / 'tweets-histogram.pdf')fullName;
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export.
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^ {self. 'self tweets is empty'}
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].
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tweetsByTimeSpan := self collectMessages: [ self tweets] byTimeSpanSplits: aNumberOfBars.
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subtotals := tweetsByTimeSpan values collect: [ :collection | collection size ].
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tweetsHistogram := RSChart new.
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tweetsHistogram extent: 800@200.
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diagram := RSBarPlot new
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y:subtotals.
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diagram color: (Color r:(91/255) g:(131/255) b:(222/255)).
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tweetsHistogram addPlot: diagram.
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tweetsHistogram addDecoration: (RSHorizontalTick new
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fromNames: tweetsByTimeSpan keys;
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labelRotation: 0;
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fontSize: 72 /aNumberOfBars;
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yourself).
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tweetsHistogram addDecoration: (RSVerticalTick new
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integer;
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fontSize: 72 /aNumberOfBars).
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tweetsHistogram build.
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^ tweetsHistogram canvas exportAsFileNamed: 'tweets-histogram' into: self folder |