Help rendering a pylab plot

[scidam]

Just vectorize your function and plot it:

from pylab import *
 
# Returns the summer tterature of seawater (in degrees Celsius) according to Mackenzie’s model.
@np.vectorize
def some_function(ff, dd):
    if dd >=0 and dd <=200:
        tt = (22/-90)*ff+24
    elif dd >=200 and dd <=1000:
        st = (22/-90)*(ff)+24
        gg = (st-2)/-800
        tt = gg*dd+(gg*-1000+2)
    else:
        tt = 2.0
    return tt
 
ff = float(25)
dd = np.arange(0, 1200, 100)
tt1 = some_function(ff, dd)
plot(dd,tt1)
title("Something")
xlabel("x label")
ylabel("y label")
show()