Plot data from two columns in csv

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Tsalsabilla Winny Junika
回答： Star Strider 2019-4-10
Hi, i want to plotting the data (x,y). x is timestamps, and then y is raw data. Here is my data:
Capture.PNG
and then i just code to show the plot data:
clear;
clc;
data = csvread ('eegID.csv');
col1 = data(:, 1);
col2 = data(:, 2);
plot(col1, col2)
But, the command windows show
"Error using dlmread (line 147)
Mismatch between file and format character vector.
Trouble reading 'Numeric' field from file (row number 2, field number 1) ==> ;-57129\n
Error in csvread (line 48)
m=dlmread(filename, ',', r, c);
Error in csv (line 5)
data = csvread ('eegID.csv');"
FYI, im just newbie in matlab apps. Please help me. Thank you

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回答（2 个）

Bob Thompson
Bob Thompson 2019-4-10
data = csvread ('eegID.csv',1);
col1 = data(:, 1);
col2 = data(:, 2);
plot(col1, col2)
csvread cannot read non-numeric characters. You need to specify the number of header lines.
Star Strider
Star Strider 2019-4-10
The ‘\n’ is a linefeed character.
Consider using the readtable (link) function (R2013b and later), rather than dlmread for it.
It is not possible to determine the format of your file from the information you posted. Use the detectImportOptions (link) function (if you have R2016b or a later release) to find out more about your file.

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