2010-07-11 02:12, Ritchy lelis skrev:
On 7 jul, 08:38, Johan Grönqvist<johan.gronqv...@gmail.com> wrote:
About the plot draw it's a curve that it's a set of points wich it's
the result of the comput of the Vref and Vi together. I don't know if
i had to make a break instruction (like in other's languages) after
the "If" instructions if i want the else-condition to be executed? ...
(do you have some sujestions?)
I would have expected a code structure similar to this:
(NOTE: This is a very inefficient solution, and not the one suggested
earlier, but it is closer to the code snippet you posted originally, and
it does produce a plot.)
----------------------
import numpy as np
import matplotlib.pyplot as plt
Vref = np.linspace(1,20, 100)
Vi = np.linspace(1,10,100)
for ref in Vref: # Loop over Vref and Vi
for i in Vi:
if i > ref/4: # Compute V0
V0 = 2*i-ref
elif (-ref/4) <= ref and ref <= ref/4:
V0 = 2*i
elif i < -ref/4:
V0 = 2*i+ref
plt.plot(i, V0, ".") # Plot one single point at x = i, y = V0
plt.show() # Display the plot in a window
----------------------
Anyway i have a picture of a tuturial that i found but in this forum i
can't post it. That pic would show what a really want...
Can you give a link?
Relatively to the axis, the Vi takes the x-axis and the Vref takes the
y-axis.
To me this sound like you want to make a 3D-plot, as there is the
x-axis, the y-axis, and V0. Is this correct? Is V0 on a z-axis?
As i said, i have a good 2 pic of a doc that has the information about
this ADC that i'm developing.
I looked on wikipedia
<http://en.wikipedia.org/wiki/Analog-to-digital_converter>, and saw some
figures. Is any of those similar to what you look for?
I see that they have (Vi - Vref) on the x-axis, and the computed value
on the y-axis.
Regards
Johan
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