[pstricks] pstricks-add documentation

[Herbert Voss]

cpiateck at univ-orleans.fr schrieb:
> When trying to plot with the algebraic option I find that the
> documentation is not enough precise on the algebraic use of functions as
> Sum, Ceiling...

@Dominique, please provide some examples ...

> Secondly, could the command ArrowInside be used with all type of curve, even
> those plotted with the differential equation command.

yes, but it strongly depends to the dx of two coordinates.
For a plotted curve with 500 values it makes no sense, because
ArrowInside takes two points for the calculation.

> Third, pstricks-add as a parametric plot command. Why not an implicit one.
> Of course, pst-func as such a function but we cannot use the algebraic
> parameters.

feel free to copy and paste the code ...

Herbert