Translante IDL script to python

IDL programming language

IDL, short for Interactive Data Language, is a programming language used for data analysis. It is popular in particular areas of science, such as astronomy, atmospheric physics and medical imaging. (https://en.wikipedia.org/wiki/IDL_(programming_language))

IDL to python (numpy) document

• (IDL to Numeric/numarray Mapping)[https://www.johnny-lin.com/cdat_tips/tips_array/idl2num.html]
• (NumPy for IDL users)[http://mathesaurus.sourceforge.net/idl-numpy.html]

idlwrap API

idlwrap helps you port IDL code to python by providing an IDL-like interface to numpy and scipy.

• (API)[https://r4lv.github.io/idlwrap/api.html]

Note

• Array
  • IDL a[i, *] is the same with Python a[:,i]
    There are two different ways of storing a matrix/array in memory: column-major and row-major.
  • IDL array index include the last element:

    IDL> (FLTARR(10))[3:5]
     0.00000      0.00000      0.00000 ; -> three elements
    

    >>> np.zeros(10)[3:5]
    array([0., 0.]) # -> two elements