When you get galgebra from git in the galgebra/doc directory is galgebra.pdf. In section 1.3 of the document are instructions of how to install galgebra including how to set the python path so that other python programs can find galgebra.
On Wed, Feb 15, 2017 at 5:35 AM, Henri Girard <[email protected]> wrote: > Hi, > I am new to sympy and I wanted to try it on maxwell's equations examples > so I installed galgebra from git but it doesn't work ? the import is not > found... ANy help ? > regards > Henri > > import sys > import sympy.galgebra.GAsympy as GA > import sympy.galgebra.latex_ex as tex > > GA.set_main(sys.modules[__name__]) > > if __name__ == '__main__': > > metric = '1 0 0 0,'+\ > '0 -1 0 0,'+\ > '0 0 -1 0,'+\ > '0 0 0 -1' > > vars = GA.make_symbols('t x y z') > GA.MV.setup('gamma_t gamma_x gamma_y gamma_z',metric,True,vars) > tex.Format() > I = GA.MV(1,'pseudo') > I.convert_to_blades() > print ('$I$ Pseudo-Scalar') > print ('I =',I) > B = GA.MV('B','vector',fct=True) > E = GA.MV('E','vector',fct=True) > B.set_coef(1,0,0) > E.set_coef(1,0,0) > B *= gamma_t > E *= gamma_t > B.convert_to_blades() > E.convert_to_blades() > J = GA.MV('J','vector',fct=True) > print ('$B$ Magnetic Field Bi-Vector') > print ('B = Bvec gamma_0 =',B) > print ('$E$ Electric Field Bi-Vector') > print ('E = Evec gamma_0 =',E) > F = E+I*B > print ('$E+IB$ Electo-Magnetic Field Bi-Vector') > print ('F = E+IB =',F) > print ('$J$ Four Current') > print ('J =',J) > gradF = F.grad() > gradF.convert_to_blades() > print ('Geometric Derivative of EM Bi-Vector') > tex.MV_format(3) > print ('\\nabla F =',gradF) > print ('All Maxwell Equations are') > print ('\\nabla F = J') > print ('Div $E$ and Curl $H$ Equations') > print ('<\\nabla F>_1 -J =',gradF.project(1)-J,' = 0') > print ('Curl $E$ and Div $B$ equations') > print ('<\\nabla F>_3 =',gradF.project(3),' = 0') > tex.xdvi(filename='Maxwell.tex') > > ---------------------------------------------------------------------------ImportError > Traceback (most recent call > last)<ipython-input-1-45c89331d82f> in <module>() 1 import sys----> 2 > import sympy.galgebra.GAsympy as GA 3 import sympy.galgebra.latex_ex as > tex 4 5 GA.set_main(sys.modules[__name__]) > /home/pi/git/sage/local/lib/python2.7/site-packages/sympy/galgebra.py in > <module>()----> 1 raise ImportError("""As of SymPy 1.0 the galgebra module is > maintained separately at https://github.com/brombo/galgebra""";) > ImportError: As of SymPy 1.0 the galgebra module is maintained separately at > https://github.com/brombo/galgebra > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/sympy/6b917548-f055-4ee6-8310-259cd0bb93f1%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/6b917548-f055-4ee6-8310-259cd0bb93f1%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CALOxT-mxTiD5wqToAYBLe9W-MRF-LYkTZ7_kUXsYuHw7%3DE3inw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
