Logarithmic marks left/right/top/bottom...
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Four of the commands in the Margins menu of the Picture window.
Purpose
To draw a specified number of marks per decade into the margins around the drawing area, along a logarithmic axis.
Settings
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Marks per decade
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the number of marks that will be drawn for every decade.
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Write numbers
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if on, real numbers will be written in the margin, expressed in the domain or range of your latest drawing in the horizontal or vertical direction.
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Draw ticks
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if on, short line pieces will be drawn in the margin.
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Draw dotted lines
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if on, dotted lines will be drawn through your drawing.
Behaviour
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If your vertical logarithmic axis runs from 10 to 100, and Marks per decade is 1, marks will only be drawn at 10 and 100;
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if Marks per decade is 2, marks will be drawn at 10, 30, and 100;
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if it is 3, marks will be drawn at 10, 20, 50, and 100;
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if it is 4, marks will be drawn at 10, 20, 30, 50, and 100;
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if it is 5, marks will be drawn at 10, 20, 30, 50, 70, and 100;
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if it is 6, marks will be drawn at 10, 15, 20, 30, 50, 70, and 100;
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if it is 7 (the maximum), marks will be drawn at 10, 15, 20, 30, 40, 50, 70, and 100.
© ppgb 19970330