Bar charts in Igor Pro

A bar chart is a trace in a different mode, against a text wave for the categories.

Function BarChart(WAVE counts, WAVE/T names)
    DoWindow/K BarView
    Display/N=BarView counts vs names

    ModifyGraph mode=5, hbFill=2, rgb=(20000, 40000, 60000)
    ModifyGraph toMode=0, barGap=0.2, useBarStrokeRGB=1
    ModifyGraph barStrokeRGB=(0, 0, 0)

    ModifyGraph tkLblRot(bottom)=45, tick(bottom)=3
    Label left, "Count"
    SetAxis/A/E=1 left
End

How it works

1. mode=5 draws bars; hbFill picks the fill pattern.
2. Plotting against a text wave makes the bottom axis categorical.
3. toMode decides whether bars sit on zero or on the previous trace.

Keywords and builtins used here

• Display
• DoWindow
• End
• Function
• Label
• ModifyGraph
• SetAxis
• WAVE

The run, in numbers

Lines

12

Characters to type

333

Tokens

85

Three-star pace

80 tpm

At the three-star pace of 80 tokens a minute, this run takes about 64 seconds.

Type this snippet

Step 4 of 5 in Making a graph, step 4 of 19 in Graphs & presentation.

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Bar charts in other languages

• Python
• R