Could someone assist me on how to display a graph in python?
I have downloaded and installed the canopy enthought environment for my python code.
However, when I use the plot command from pylab, it does not display the graph even though no error is generated. I am quite new to python. Kindly tell me how to display the graph.
Below is the sample code:
import numpy
import pylab
pylab.interactive(True)
y=numpy.array([2,3,4,5,6,6])
print y
x=pylab.linspace(-1, 1, 20)
pylab.plot(x, x**2, 'o-')
pylab.show()
is missing at the end to display the graph.
Have a look at the following link giving you a very general workable plot program
http://www.daniweb.com/software-development/python/code/216915/plotting-with-pylab
or with tinyurl
http://tinyurl.com/l5ton82
Now, the next problem is I want divide my code into different files, I have imported it, but I do not know how to make a variable declared in one file visible to every other file.
if you have one file named file2.py with a variable named myvar, and wish to import the variable (or function or class or ...) into another file named file1.py, the easiest way to do this is use this line in file1.py:
from file2 import myvar
This only works if both files are next to each other in the same directory.
If you wish to create a proper module, place file2.py in a subdirectory named mymodule. Then add an empty file named __init__.py in this same subdirectory, and call it like this:
from mymodule.file2 import myvar
Ofcourse you can choose the directory and filenames yourself.
Again this only works out of the box if the subdirectory is located in the same directory as file1.py.
Accessing files or modules on different paths is perfectly possible as well, but will require using default locations or setting environment variables to let python know where to look.
For more details please read the python documentation as well.
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