How to create a Line Plot from gauge Data?

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!

Answer 1

[Arif Hoq]

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)

[Elise Buller]

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]

please attach your data.

[Elise Buller]

Thanks Arif!

[Arif Hoq]

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]

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]

Thank you so much for your help Arif!

[Arif Hoq]

my pleasure.