plotting problem

[Francesco Potorti`]

>I have a program which is showing the following error message which I
>don't understand. It is not plotting.
>
>Warning: empty x range [0.246581:0.246581], adjusting to [0.244115:0.249046]
>Warning: empty x range [0.246581:0.246581], adjusting to [0.244115:0.249046]
>Warning: empty x range [0.246581:0.246581], adjusting to [0.244115:0.249046]

You should check your data, apparenly the x value is the same for all
points.

If that's not the case, you should post an example of the plotting
instructions that gives the error.

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