rounding the imaginary part of the number

Z1 =

0.0000e+00 + 7.8765e-04i

I would like the result to appear as 0.0008i in the imaginary part, how to do this?

Answer 1

[Alan Stevens]

Z = 0.0000e+00 + 7.8765e-04*1i;
format shortG
round(Z,4)

ans = 
            0 +     0.0008i