Merge pull request #2405 from ales-erjavec/fixes/calibration-plot-dtype-error

owcalibrationplot: Specify output type for the smoother

Author: astaric

Orange/widgets/evaluate/owcalibrationplot.py

@@ -220,7 +220,7 @@ def smoother(xs):
         W = a * numpy.exp(-gamma * ((xs - x) ** 2))
         return numpy.average(y, weights=W)
 
-    return numpy.frompyfunc(smoother, 1, 1)
+    return numpy.vectorize(smoother, otypes=[numpy.float])
 
 
 def main():