notes_on_using_libermate.txt

Install clips from source

==============
try
    chkinputdatatype(x,p);
catch ME
    throwAsCaller(ME);
end


Not parseable, gives:

  File "/home/sam/workspace/libermate-0.4/translate_new.py", line 190, in do_try
    b=self.write_node(node.children[1], "")
IndexError: list index out of range


Solution: Comment it out, throwAsCaller is what fails here.
Later on change the function behaviour to throw a python error as desired.
==============

if any( w(:)<0 ) && realFlag

Not parseable, gives:


  File "./libermate.py", line 236, in bop
    if(python_priority[ptoken]>python_priority[op]):
KeyError: 'np.any((w.flatten(1)<0.))'


Solution: Comment it out, && realFlag fails here because in MATLAB is bool
and in the translation becomes a float (1.0) which can't be '&&'-ed.
Later on correct that flag to a bool value by hand.

==============

if any( (w>pi) | (w<0) ) && realFlag 

Not parseable, gives:

  File "./libermate.py", line 236, in bop
    if(python_priority[ptoken]>python_priority[op]):
KeyError: 'np.any(np.logical_or(w > np.pi, w<0.))'

Solution: Comment it out, && realFlag fails because the evaluation of
realFlag as it's parsed as a float in python and it's originally intended
to be a boolean. Later correct by hand this value to a boolean.

=============

a = [1; -H2\h1].';

Not parseable, gives:

  File "./libermate.py", line 251, in preop
    if(python_priority[ptoken]>python_priority[op]):
KeyError: ', '

Solution: Make H2 negative before, i.e.:
H2_minus = -H2
a = [1; H2_minus\h1].';
Then it will work.

=============

c = T(:,2:p+q+2)\(T_minus(:,1));

Not parseable, gives:

  File "/home/sam/workspace/libermate-0.4/translate_new.py", line 265, in do_BACKDIV
    b=self.write_node(node.children[1], ", ")
IndexError: list index out of range

Solution: This is too complicated for the parser, try to divide it in parts, i.e.:
   T_minus = -T;
   T_left = T(:,2:p+q+2);
   T_right = (T_minus(:,1));
   c = T_left \ T_right;


============


  File "/home/sam/workspace/libermate-0.4/translate_new.py", line 271, in do_COLON
    sstr=self.colonop(ptoken, cc)
  File "./libermate.py", line 269, in colonop
    a=cc[0]
IndexError: list index out of range



==========
After work:

1) Correct identations of ifs
2) Correct the matcompat.max found in the code, you can safely change them to just max
3) Correct other import issues:
linalg.solve -> from scipy.linalg import solve
toeplitz not found
from scipy.linalg import toeplitz
etc... I google them to know where they are in scipy
4) matdiv not found
change it to a division "/"
5) some np.zeros(1,K) should be np.zeros(K)
6) length -> len can be safely changed usually
7) Indices are floats sometimes, change them to ints (remove the "." from "1.")
8) Indices are wrong lots of times


Info about libermate
https://groups.google.com/forum/#!topic/scipy-user/6tx6ORxOr_I
Official website:
http://libermate.sourceforge.net/

Useful info:
http://wiki.scipy.org/NumPy_for_Matlab_Users
Alternatives:
https://github.com/ocefpaf/python-mlabwrap