How to display text in a plot as scientific number

26 次查看（过去 30 天）
Ziv Kassner
Ziv Kassner 2020-8-30
评论： Ziv Kassner 2020-8-30
How do I display a very small/large number in text command as a number with 2 digits after the decimel point?
e.g. 5.42e-6 rather than 0.00000542 or 5.4200e-06
thanks,
Ziv

请先登录，再回答此问题。

采纳的回答

dpb
dpb 2020-8-30
Use a format string to create specific format desired...
>> sprintf('%.2e',pi*1E6)
ans =
'3.14e+06'
ergo, use
text(x,y,sprintf('%.2e',valueToPrint))
There's also num2str, compose that have some additional flexibility for specific uses...

更多回答（1 个）

Adam Danz
Adam Danz 2020-8-30
编辑：Adam Danz 2020-8-30
n = 0.00000542;
nStr = num2str(n, '%.2e');
cla()
text(.1, .1, nStr)
% alternatively,
text(.5, .1, sprintf('%.2e', n))

类别

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

标签

产品


版本

R2018b

Community Treasure Hunt

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

Start Hunting!

Translated by