Coordinates in plot axis. How can I modify number of digits

[José Luis García Pallero]

Hello,
If I plot, for example, the data

x=[450000 460000 470000];
y=[4810000 4820000 4830000];
plot(x,y);

The coordinate tags in Y axis are 4.81e+06, 4.82e+06, etc.
How can I call to plot for obtains axis with tags as 4810000.000,
4820000.000, etc.? Is possible to control the number of decimal places
too?

Thanks

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