Change X axis units

26 次查看（过去 30 天）
Laura Ferrer Pascual
评论： Steven Lord 2020-11-6
Hi!
I was given some data where Y axis is in uV and X axis in seconds. I want to change both units to mV and to hours.
My problem is that the data is "loaded" to my matlab code, for instance:
s1=load('data.txt');
So I don't know how to change the units.

请先登录，再回答此问题。

采纳的回答

Ameer Hamza
Ameer Hamza 2020-11-6
In the following example, I assumed that 1st column in data.txt is x-values and 2nd column is y-values
s1 = load('data.txt');
t = s1(:,1);
uV = s1(:,2);
t_hour = t/3600;
mV = uV/1000;
plot(t_hour, mV)
  8 个评论
显示 6更早的评论
Laura Ferrer Pascual
Laura Ferrer Pascual 2020-11-6
Yes! First column is s and second column is uV
Ameer Hamza
Ameer Hamza 2020-11-6
In that case, the unit of RE and TE are also uV. Consequently, the unit of O is also uV. The last code in my comment should work.

请先登录，再进行评论。

更多回答（1 个）

KSSV
KSSV 2020-11-6
To convert seconds to hours multiply t by
t_in_hours = t_in_seconds*1/(60*60) ;
To convert uV to mV, multiply v by
V_in_mV = V_in_uV*1/1000 ;
  1 个评论
Steven Lord
Steven Lord 2020-11-6
To make the time conversion a bit more self-explanatory in the code you can use the seconds and hours functions.
>> s = 7200;
>> h = hours(seconds(s))
h =
2
Another example: a million minutes is a little under 2 years.
>> years(minutes(1e6))
ans =
1.90132431040869
There's also a days function you can use for this purpose.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Discrete Data Plots 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by