two lines on the same graph

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Payaam Khalid
Payaam Khalid 2022-12-6
回答： Askic V 2022-12-6
clear all; close all;
a = arduino('COM3', 'uno') % or use COM port
tic %start timer
max_samples = 10; % how many times do we check the sound sensor?
tic %start timer
for i = 1:max_samples
moisture_data(i) = readVoltage(a,'A0');
time_data(i) = toc;
end
plot(time_data, moisture_data)
readVoltage(a,'A0') is a moisture sensor this loop takes 10 samples from the sensor then graphs it i want to pause for 30 seconds put the sensor in water and run this loop again making a second line on the same set of axes as the first how do i do that

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回答（1 个）

Askic V
Askic V 2022-12-6
You need to use hold. Please have a look in the documentation
https://www.mathworks.com/help/matlab/ref/hold.html

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