How to manually adjust the decimal point?

2 次查看（过去 30 天）
Enfa White
Enfa White 2012-9-25
I used (5*rand) to generate the random numbers in the range 0 to 5 and got the answers like 4.5693, 3.4211 etc. The default format long and short only can display 5 digits and 15 digits. How to have 7 digits to get the answers like 4.569312, 3.421178 etc? Please help.

请先登录，再回答此问题。

采纳的回答

Wayne King
Wayne King 2012-9-25
编辑：Wayne King 2012-9-25
x = 5*rand;
fprintf('%1.6f\n',x)
Or if you want to keep it as a string:
y = sprintf('%1.6f\n',x);
Note now: y
gives you what you want, but if you convert it back to a number with
str2num(y)
the formatting will change back.

更多回答（1 个）

Daniel Shub
Daniel Shub 2012-9-25
You could also overload display for class double and format short to make it display 7 digits instead of 15. Since double is the default class in MATLAB it seems a little bit buggier to me than when I suggested overloading display for char. Basically create a folder @double and add it to the MATLAB path. inside that folder add the following function called display.m.
function display(x)
if strcmpi(get(0, 'Format'), 'Short')
name = inputname(1);
if isempty(name)
name = 'ans';
end
builtin('disp', sprintf('%s =\n%20.7f\n', name, x));
else
builtin('display', x);
end
end

类别

在 Help Center 和 File Exchange 中查找有关 Entering Commands 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by