If you do not have a closed form for T(E) you cannot calculate the exact
value of I(V).
Anyway. Assuming T is integrable you can approximate I(V).
1. Way to do:
interpolate T(E) by a polynomial P and integrate P. For this you need
the equation (coefficients and exponents) of P. Integrating is easy
after that.
2. other way:
Use Stair-functions: you can approximate the Value of IV() by the sum
over T(E_i) * (E_{i+1} - E_i) s.t. E_0 = E_F-\frac{eV}{2} and E_n =
E_F+\frac{eV}{2}.
3 one more way:
use a computer algebra system like sage.
bg,
Johannes
On 16.05.2014 10:49, Enlong Liu wrote:
Dear All,
I have a question about the integration with Python. The equation is as
below:
and I want to get values of I with respect of V. E_F is known. But for
T(E), I don't have explicit equation, but a .dat file containing
two columns, the first is E, and the second is T(E). It is also in the
attachment for reference. So is it possible to do integration in Python?
Thanks a lot for your help!
Best regards,
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