Hallo,
I am new using sage and I can say, I is great! But now I got the
following problem. I use sage notebook(). I defined a function:
def h(f):
if (f < 10):
return 10
if (f >= 10):
return 0
and now I want to plot it.
G=plot(h(f), 0, 20)
G.show()
I get the error message:
Traceback (click to the left for traceback)
...
TypeError: no way to make fast_float from None
So, sage has a problem with the if statement. When I set
def h(f):
if (f < 10):
return 10
else:
return 0
it plots with
G=plot(h(f), 0, 20)
G.show()
a constant zero graph. When I call the function myself:
h(8)
I get 10 and everything is ok.
Do you know what this is? The evaluation of the if statement seems not
to work in plot().
thank you, steffi
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