Stop exponential answers
901 views (last 30 days)
I have two values representing the max and min of a data vector.
max_val = 0.9855;
min_val = 0.9851;
Both are of type 'double'. However, when I try to subtract the min from the max:
diff = max_val - min_val;
the answer 3.6023e-04 is returned instead of 0.0004. How can I ensure that this answer is expressed without the exponentiation?
Titus Edelhofer on 7 Jun 2011
there is no type in format that generally tells MATLAB to use such a format. Nevertheless you can always use sprintf to make a string in the format you like, in this case it would be
More Answers (2)
John D'Errico on 7 Jun 2011
I tend to work normally with the display format set as
format short g
for most work. This gives me numbers in a format that I like as often as possible, only going into scientific notation when necessary. Thus
>> format short g
>> X = 3.6023e-04
"short g" is more compact than the alternative of "long g", and most of the time I don't need to see 15 decimal digits in my results.
Robert Cumming on 7 Jun 2011
to make it write the number you could do:
format long g
to actually round your number to the correct number of decimal places you could make an inline function, e.g.:
dcp = inline ( 'round(input.*10.^number)./10.^number' )
dcp(diff,4) % this will round to 4 decimal places
p.s. its not an exponential its engineering format that your answer is expressed as.