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Exponential precision of power engineering format

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Leandro de Oliveira
Leandro de Oliveira on 23 Apr 2018
Answered: Harry Dymond on 31 May 2020
Hello guys! I have the number 143903542.580052, by default matlab prints 1.439035e+08 but I want to print 143.9035e+06, I've tried so many matlab help links but nothing to do. Is there a way?

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Answers (2)

Star Strider
Star Strider on 23 Apr 2018
For Command Window and ‘tooltip’ formatting, use:
format short eng
or:
format long eng
For printed output (using fprintf or sprintf), I wrote a little utility anonymous function for my own use to do that:
engntn = @(x) [x*10.^(-3*floor(log10(abs(x))/3)) 3*floor(log10(abs(x))/3)]; % Engineering Notation Mantissa & Exponent
Result2 = sprintf('%.4fE%+04d', engntn(Q1))
for example:
Q1 =
143903542.580052
Result2 =
'143.9035E+006'

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Leandro de Oliveira
Leandro de Oliveira on 23 Apr 2018
Thank you, I hope Matlab implement some function like yours in the future.
Star Strider
Star Strider on 23 Apr 2018

My pleasure.

If my Answer helped you solve your problem, please Accept it!

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Harry Dymond
Harry Dymond on 31 May 2020
My FEX submission num2eng will do this for printed output. It handles edge cases such as Inf and NaN inputs, has extensive formatting control for the output, and offers the option of SI prefixes instead of engineering notation.

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