Re: Different plot behavior in octave and gnuplot

[Francesco Potortì]

>>Because a plot is made of segments between points.  But if you have a
>>single point you cannot draw a line.  To get a horizontal line at y=5 do
>> plot([5,5])
>
>Thank you Francesco, this makes sense.  I'm curious though, when making this
>plot using gnuplot itself,  plot(y=5) works.  Why is this so if octave is
>ultimately calling calling gnuplot?

Note that this is "plot(y=5)", not "plot(5)".  The former is Gnuplot
syntax (not Octave's) which means "try to plot this function in a
sensible way".

This is similar to Octave's fplot function: look at it in the manual for
an example.

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