[pstricks] cspline in pst-plot

[Patrice MÉGRET]

Dear all,

I am using pst-plot with cpsline option to draw smooth curves.

Here are two examples:

The first one is from the documentation and it works well. (spline in red,  curve in blue)
The second one comes from my data and I got a curve (in blue) with a discontinuity (spline in blue, curve in green). Or I was thinking that cubic spline makes the curve without discontinuity up to the second order derivative.

Is there any trouble in the cspline algorithm or do I make a mistake somewhere?

Best regards,
Patrice
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