Can't draw two plots with animated lines?
조회 수: 3 (최근 30일)
이전 댓글 표시
I was trying to design a program to receive a data and plot the real time information. This is my first time recording real time information. I needed two plots one with raw data and another with filtered data. But I can't even get the two graph to show the same information. Please help!!!
Error Message: Invalid or deleted object.
Error in trial2 (line 28)
ax.XLim = datenum([t-seconds(15) t]);
My code:
%% Clear all previous information from arduino board:
clc;
clear;
close all;
%% Use the arduino command to connect to an Arduino device.
a = arduino;
writeDigitalPin(a, 'D10', 1);
%% Receiving signal from Arduino and plotting the live data:
figure
h1 = animatedline;
ax = gca;
ax.YGrid = 'on';
ax.YLim = [-5 5];
stop = false;
startTime = datetime('now');
while ~stop
v = readVoltage(a,'A0');
v2 = readVoltage(a,'A0')-1;
t = datetime('now') - startTime;
addpoints(h1,datenum(t),v)
ax.XLim = datenum([t-seconds(15) t]);
subplot(2,1,1)
xlabel('Elapsed time (sec)')
title('Raw Signal')
drawnow
subplot(2,1,2)
xlabel('Elapsed time (sec)')
title('Filtered Signal')
drawnow
datetick('x','keeplimits')
stop = readDigitalPin(a,'D3');
end
댓글 수: 2
Geoff Hayes
2019년 5월 31일
up_pro - on which iteration of the loop did this error occur? Did you manually close the figure? Which may explain the invalid axes object? (I'm guessing that it is the axes that has become invalid...)
채택된 답변
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 MATLAB Support Package for Arduino Hardware에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!