How to create a Line Plot from gauge Data?

2022 2 28
1 个回答
更新时间：2022 2 28
1 次查看（30 天）

0 个投票

Hey! I am very new to Matlab so I apologise for the simple questions.
I am trying to create a simple line figure with Time on the x-axis and wave amplitude on the y-axis. My data is currently in a string variable and a table variable.
>>plot(RightHead2(:,1),RightHead2(:,2))
Unrecognized function or variable 'Plot'.
>> plot(RightHead(:,1),RightHead(:,2))
Error using plot
Not enough input arguments.
>> plot(RightHead2)
Error using plot
Invalid data argument.
Thank you!

请先登录，再回答此问题。

回答（1 个）

Arif Hoq
Arif Hoq 2022-2-28
编辑：Arif Hoq 2022-2-28

0 个投票

try this:
time=table2array(RightHead2(2:end,1));
waveAmp=table2array(RightHead2(2:end,2));
plot(time,waveAmp)
or simply
waveAmp=table2array(RightHead2(2:end,2));
plot(waveAmp)

7 个评论
显示 5更早的评论 隐藏 5更早的评论

Elise Buller
Elise Buller 2022-2-28
Thanks Arif! I was able to get a plot (see attached) however how can I change the x-axis to displaye the data instead of row numbers?
*There are 5175 rows of data in the table.
Thank you!
Arif Hoq
Arif Hoq 2022-2-28
please attach your data.
Arif Hoq
Arif Hoq 2022-2-28
As you have 5175 data, you can not adjust the whole cell array in x axis. you can try with this
A=readtable('RightHead_2.csv','ReadVariableNames',true);
time=table2array(A(:,1));
waveAmp=table2array(A(:,2));
% take a range of value
% time1=time(1000:1030);
% C=categorical(time1);
% waveAmp1=waveAmp(1000:1030);
% plot(C,waveAmp1)
C=categorical(time);
plot(C,waveAmp)
xtickangle(90)
Arif Hoq
Arif Hoq 2022-2-28
Ran in:
Ran in:
but if you consider a range of values you can have your plot. see here
A=readtable('RightHead_2.csv','ReadVariableNames',true);
Warning: Column headers from the file were modified to make them valid MATLAB identifiers before creating variable names for the table. The original column headers are saved in the VariableDescriptions property.
Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names.
time=table2array(A(:,1));
waveAmp=table2array(A(:,2));
% take a range of value
time1=time(1000:1030);
C=categorical(time1);
waveAmp1=waveAmp(1000:1030);
plot(C,waveAmp1)
xtickangle(90)
Elise Buller
Elise Buller 2022-2-28
Thank you so much for your help Arif!

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Annotations 的更多信息

产品

版本

R2020b

标签

Community Treasure Hunt

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

Start Hunting!

Translated by