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examples/bargraphs/stacked.py

 

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# To stack bars on top of each other, you can add

 

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# stackedbarpos styles and and bars to the styles.

 

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# The stackbarpos need to get different column names

 

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# each time to access new stack data. This example

 

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# also adds text styles to the bars, which just

 

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# repeat the value column data here, but they could

 

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# refer to other columns as well.

 

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from pyx import *

 

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g = graph.graphxy(width=8, x=graph.axis.bar())

 

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g.plot(graph.data.file("bar.dat", xname=0, y=2, stack=3),

 

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       [graph.style.bar(),

 

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        graph.style.text("y"),

 

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        graph.style.stackedbarpos("stack"),

 

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        graph.style.bar([color.rgb.green]),

 

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        graph.style.text("stack")])

 

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g.writeEPSfile("stacked")

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