Error messages

[kevin carter]

i have created a graph
this graph needs to show the values of a very wide range
i dont want the scale to become unreadable, so what i have done is select
the Logarithmic scale
this shows the two lines(values) clearly, however i get an error message
telling me i cant use zero values
if i input zero values they are accepted and plotted correctly

Is it Possible to stop an error message box showing ?


thanks in advance


kevin