noufalasharaf's profile - activity

Thank you slelievre. I too get out of the issue...

I couldn't draw the picture I want in a LaTeX document using SageTeX.

Here is my code.

\begin{sagesilent} import numpy as np from scipy.fftpack import fft,ifft N1 = 16 n1 = np.linspace(0.0,16,N1) y = np.array([np.cos(((2.0 * np.pi*i))/N1) for i in range (0,N1)]) yf = fft(y) import matplotlib import matplotlib.pyplot as plt fig = plt.figure(2) ax = fig.add_subplot(221) plt.plot(n1,y) ay = fig.add_subplot(222) p = plt.plot(n1,yf) g = plt.savefig("test.svg", format="svg") plt.close(fig) \end{sagesilent}

passing an array of values or a matrix to a user defined function, also expected the array or the matrix as output...How can we do this?

you can do it by \includegraphics {name.png}

thanks for the answer. understood from the example.

I have used this code to draw a picture using matplotlib.pyplot sagenb plots this nicely but i couldn't get this in my latex document when i use sagetex.

\begin{sagesilent} import matplotlib.pyplot as plt plt.plot([1,2,3,4],[1, 3, 2, 4]) plt.savefig('test.png') \end{sagesilent}

i get this error message:

** Error in Sage code on line 53 of sagetextest.tex! Traceback follows. Traceback (most recent call last): File "sagetextest.py", line 69, in <module> sagetex.plot(_sage_const_3 , plt.printfig('test.png'), format='notprovided', epsmagick=False) AttributeError: 'module' object has no attribute 'printfig'

** Running Sage on sagetextest.sage failed! Fix sagetextest.tex and try again.

thanks for your answers

Dear friend,

Sagetex works fine for me! Try to copy the file sagetex.sty and paste it in your tex working directory. That may resolve your problem. Myself using it with Kile editor latest version.

Good Luck

You could use graphics_array to achieve this. If say, p1 and p2 are the plots you want to display, then the following command can achieve what you want.

sage: graphics_array((p1,p2))

Here is a link to the manual for more details.

Is it possible to plot two functions parallel more clearly i want to plot the function and its Fourier transform to the right of the previous figure

ya, i got the problem solved. The error was missing the file sagetex.py in the path Thanks to god for giving me that observation.

Traceback (most recent call last): File "chapter5.py", line 5, in <module> sagetex.openout('chapter5') AttributeError: 'module' object has no attribute 'openout'

thanks for correcting this error getting for me while trying to compile .tex file using sagetex

now i understood Niles thanks for your kindhearted help

i defined unit step my own using def in this way def h(x): if (x>0): return 1 if (x<=0): return 0 and then plot(h(sin(x)), (x, -10, 10))

When i was trying to plot the function U(sin(x)) where U is the unit step function it leaves error message, but U(exp(x)) worked nicely

the error message was

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "_sage_input_68.py", line 10, in <module>
    exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n" + _support_.preparse_worksheet_cell(base64.b64decode("cGxvdChoKHNpbih4KSksICh4LCAtMTAsIDEwKSk="),globals())+"\\n"); execfile(os.path.abspath("___code___.py"))
  File "", line 1, in <module>

  File "/tmp/tmpeAn7w2/___code___.py", line 3, in <module>
    exec compile(u'plot(h(sin(x)), (x, -_sage_const_10 , _sage_const_10 ))
  File "", line 1, in <module>

  File "/sage/local/lib/python2.6/site-packages/sage/misc/decorators.py", line 657, in wrapper
    return func(*args, **kwds)
  File "/sage/local/lib/python2.6/site-packages/sage/misc/decorators.py", line 504, in wrapper
    return func(*args, **options)
  File "/sage/local/lib/python2.6/site-packages/sage/plot/plot.py", line 3071, in plot
    G = _plot(funcs, *args, **kwds)
  File "/sage/local/lib/python2.6/site-packages/sage/plot/plot.py", line 3105, in _plot
    funcs, ranges = setup_for_eval_on_grid(funcs, [xrange], options['plot_points'])
  File "/sage/local/lib/python2.6/site-packages/sage/plot/misc.py", line 138, in setup_for_eval_on_grid
    return fast_float(funcs, *vars,**options), [tuple(range+[range_step]) for range,range_step in zip(ranges, range_steps)]
  File "fast_eval.pyx", line 1388, in sage.ext.fast_eval.fast_float (sage/ext/fast_eval.c:8901)
TypeError: no way to make fast_float from None