Formatting of complex numbers

[Leo]

Hello DyalogAPL'er,
How to write Format Commands for Complex Numbers for an Output Log?

Example:
Instead of
2.500000000E000J4.330127019
should in the result list appear
2.5000J4.330
or
2.50E0J4.33E1

Many thanks in advance for your help!

Leo

[Roger|Dyalog]

One way: format the real and imaginary parts separately, then combine. For example:

      y←2.5j4.330127019

      ¯3{1↓∊⍺{'J',1↓⍺⍕⍵}¨9 11○⍵}y
2.50E0J4.33E0
      3{1↓∊⍺{'J',1↓⍺⍕⍵}¨9 11○⍵}y
2.500J4.330

[Leo]

Hello Roger,
thank you for the quick help!
Leo