[R] how to show the number of each axis interval (plot)

[Duncan Murdoch]

  On 20/09/2010 9:44 AM, elaine kuo wrote:
> Dear List,
>
> I am using plot for homework.

You should ask your instructor or teaching assistant for help on homework.

Duncan Murdoch

> The x-axis covered from 0 to 80, with 4 intervals.
> However, the plot only showed 0, 40, 80.
> 20 and 60 disappeared.
>
> Please kindly advise how to show 0, 20, 40, 60, 80 for the axis interval.
>
> Thank you.
>
> Elaine
>
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>
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