On 2011-12-01 14:30, stm atoc wrote:
With your help, I have a good script from the previous discussion:
**********
from pylab import *
Have you used MATLAB before and are used to its syntax? In general "star
imports" (from xxx import *) are a bad practice and IMHO should be avoided.
import numpy
import matplotlib.pyplot as pyplot
import matplotlib.mlab as mlab
These imports are unnecessary if you use the first line because "pylab"
imports everything from "numpy" and "matplotlib" into a single
namespace. So either use just the first line (not recommended) or the
following line (recommended).
See also
http://matplotlib.sourceforge.net/faq/usage_faq.html#matplotlib-pylab-and-pyplot-how-are-they-related
and
http://matplotlib.sourceforge.net/faq/usage_faq.html#coding-styles
BTW: Why do you import "mlab" when you don't use it?
with open("ourtest_out.list", "r") as f:
z = numpy.array([float(v) for v in f.readline().split()[1:]])
a = numpy.loadtxt("ourtest_out.list", skiprows=3)
N = 100
Conc = a[0:, N+1:]
print len(Conc[0]) == len(z)
This line was just for testing. You can delete it without any consequences.
figure()
pyplot.plot(Conc[0],z,'r-',label='initial')
pyplot.plot(Conc[1],z,'b-',label='after 20s')
show()
Isn't that what you want? You are plotting all your data in one graph.
There is a straight red line on the left side and a falling blue line
from left to right.
*********
I have tried to make subplot for this case as follows:
pyplot.subplot(111)
pyplot.plot(Conc[0],z,'r-',label='initial')
pyplot.plot(Conc[1],z,'b-',label='after 20s')
Here you are creating a subplot with 1 plot each row and 1 plot each
column, in other words you do the same as above (creating just 1 plot).
If you want to have for example 4 plots in the same window with 2 each
row and 2 each column you have to use
pyplot.subplot(221)
After plotting all the data in this first "axes" you have to switch to
the next one:
pyplot.subplot(222)
Have you already read the matplotlib-tutorial:
http://matplotlib.sourceforge.net/users/pyplot_tutorial.html
However, I am not sure how to add new data over this to make a graph
including both new and old data simultaneously.
As I've said before: You are already plotting all data in one graph.
Don't you get two different lines?
Bye, Andreas
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