How to get a smooth curve using plot in matlab

E and QPM are vectors

xValues = linspace(min(E),max(E));
yValues = interp1(E,QPM,xValues,'spline');

plot(E,QPM,xValues,yValues);

when i use the above code,the curve in the graph is not smooth.How to get a smooth curve

Answer 1

[dpb]

'spline' goes through the points given and uses a spline to fill in between.

Perhaps you're looking for "smoothing spline". In the Curve Fitting TB is

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