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About P1D derivative() method:
05-13-2014, 11:30 AM
Post: #1
About P1D derivative() method:
Hi,
I have a problem when using P1D derivative() method.

I have a filled P1D instance defined as "P1D p1=new P1D(double[],double[]) " without errors added.

And p1 can be plotted accurately,
but the problem happened when excuting"P1D p2=p1.derivative()" .

This is the wrong message:
java.lang.NullPointerException
at jhplot.P1D.getYupper(P1D.java:4824)
at jhplot.P1D.derivative(P1D.java:5245)
at com.sbl.io.video.ScanTest3.main(ScanTest3.java:134)


I'll be very grateful for your help!
Thanks
ColdWind
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About P1D derivative() method: - feilangrenM - 05-13-2014 11:30 AM

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