A program to toggle between prefixes

[DrD]

Hi Salvomic,

The scientific notation exponent on base 10 of a value could be matched with the corresponding value in an SI prefix list, and append the prefix abbreviation, or name, on returning corresponding value. I haven't coded a routine for this, but you might have some ideas to expand on this theme. Here is an SI prefix list you might find useful, (omitting 1e0, which could be the default case) :

Code:


SI:={ 1e-24,"y","yocto",
      1e-21,"z","zepto",
      1e-18,"a","atto",
      1e-15,"f","femto",
      1e-12,"p","pico",
      1e-9,"n","nano",
      1e-6,"u","micro",
      1e-3,"m","milli",
      1e-2,"c","centi",
      1e-1,"d","deci",
      1e1,"da","deca",
      1e2,"h","hecto",
      1e3,"k","kilo",
      1e6,"M","mega",
      1e9,"G","giga",
      1e12,"T","tera",
      1e15,"P","peta",
      1e18,"E","exa",
      1e21,"Z","zetta",
      1e24,"Y","yotta"
    };

-Dale-