Help in Plotting ECG .csv file

A=readtable('samples.csv');

figure;

x= A{:,1};

y= A{:,2};

plot(x,y);

xlim([2,21601]);

ylim([2,14761]);

[Stephan]

What is the question?

[madhan ravi]

you forgot to upload your file

[vandana sharma]

it is giving "not enough argumets for plot(x,y);"

what can i do to remove this and to plot y vs x.

[madhan ravi]

You have a file named plot.m which shadows the inbuilt function plot() please remove it or move it from from the working path.

[vandana sharma]

where to find this file.....bcz as far i know there is no such file

[vandana sharma]

i have uploaded the .csv file now

[madhan ravi]

which plot -all % what shows up?

[vandana sharma]

Error using plot

Invalid first data argument.

Error in sample1_plot (line 5)

plot -all

[madhan ravi]

You have some problem with copying: see https://www.mathworks.com/matlabcentral/answers/447044-help-in-plotting-ecg-csv-file#comment_675210

[Stephan]

@Madhan: I tried using readtable and get the same error - if i use csvread it works - there is problably not a problem of a shadowed function

[madhan ravi]

So after testing it , turns out that all the numbers are read as char.

Answer 1

[Stephan]

Hi,

try this:

A=csvread('samples.csv',2,0);
plot(A(:,1),A(:,2))

For me it works - there is no problem with your plot function i guess. It is due to the format that the readtable function gives your data when inporting it. I get the same error when i try to use readable... So do not search for a double file that is not there...

Best regards

Stephan

[vandana sharma]

it worked........but i want to know what does 2,0 mean in your code??

[Stephan]

The first two rows are ignored and no columns are ignored when importing the data - so the imported data is only numeric, which is easier to process with.

[vandana sharma]

ok.

Thank you so much Stephan.