Typing Greek letters etc in Python plots

Question

I need to type Greek letters and the Angstrom symbol in labels of axes in a plot  So for example  fig gca   set xlabel   wavelength    Angstrom     fig gca   set ylabel   lambda      except that I actually want  Angstrom  and  lambda  replaced by actual symbols  How should I do this  Thanks

User · Answer

Python 3 x  small greek letters are coded from 945 to 969 so alpha is chr 945   omega is chr 969  so just type   print chr 945     the list of small greek letters in a list   greek letterz  chr code  for code in range 945 970    print greek letterz    And now  alpha is  greek letterz 0   beta is greek letterz 1   a s o

User · Answer

If you want tho have a normal string infront of the greek letter make sure that you have the right order   plt ylabel r Microstrain    mu  epsilon

User · Answer

You need to make the strings raw and use latex   fig gca   set ylabel r   lambda      As of matplotlib 2 0 the default font supports most western alphabets and can simple do  ax set xlabel        with unicode

User · Answer

Not only can you add raw strings to matplotlib but you can also specify the font in matplotlibrc or locally with   from matplotlib import rc  rc  font       family   serif   serif    Palatino     rc  text   usetex True    This would change your serif latex font  You can also specify the sans-serif Helvetica like so  rc  font      family   sans-serif   sans-serif    Helvetica       Other options are cursive and monospace with their respective font names  Your label would then be  fig gca   set xlabel r wavelength  5000  AA      If the font doesn t supply an Angstrom symbol you can try using  mathring A

User · Answer

Why not just use the literal characters   fig gca   set xlabel  wavelength         fig gca   set ylabel        You might have to add this to the file if you are using python 2     - - coding  utf-8 - - from   future   import unicode literals    or use u unicode strings    It might be easier to define constants for characters that are not easy to type on your keyboard   ANGSTROM  LAMDBA           Then you can reuse them elsewhere   fig gca   set xlabel  wavelength    s     ANGSTROM  fig gca   set ylabel LAMBDA

[python] Typing Greek letters etc. in Python plots

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