Two graphs at the same time

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Ameen Mouazzen
Ameen Mouazzen 2019-4-18
评论： Ameen Mouazzen 2019-4-19
PLEASE HELP
Hello,
I have this code that is used with arduino package
the code will be used to get data from two sensors:
  1. load cell that measures load
  2. displacement sensor that measures displacement
problems:
  1. this code is showing two graphs but only one graph has labels
  2. only one graph is showing data results
this is the code: (please note that i'm new to MATLAB and coding in general)
clear
clc
a=arduino('com3','Uno')
loadcell=addon(a,'ExampleAddon/HX711',{'D2','D3'})
plotTitle1 = 'Load VS Time';
xLabel1 = 'Elapsed Time (s)';
yLabel1 = 'Load (KN)';
legend1 = 'Load Cell 1'
plotTitle2 = 'Displacement VS Time';
xLabel2 = 'Elapsed Time (s)';
yLabel2 = 'Displacement (mm)';
legend2 = 'Displacement Sensor 1'
yMax1 = 10000000
yMin1 = 0
yMax2 = 10000000
yMin2 = 0
plotGrid = 'on';
min1 = 0;
max1 = 10000;
min2 = 0;
max2 = 10000;
delay = .001;
time = 0;
data1 = 0;
data11 = 0;
data12 = 0;
data2 = 0;
data21 = 0;
data22 = 0;
count = 0;
subplot(2,4,1)
plotGraph1 = plot(time,data1,'-r')
subplot(2,4,2)
plotGraph2 = plot(time,data2,'-r')
hold on
title(plotTitle1,'FontSize',5);
xlabel(xLabel1,'FontSize',5);
ylabel(yLabel1,'FontSize',5);
axis([yMin1 yMax1 min1 max1]);
title(plotTitle2,'FontSize',5);
xlabel(xLabel2,'FontSize',5);
ylabel(yLabel2,'FontSize',5);
axis([yMin2 yMax2 min2 max2]);
grid(plotGrid);
tic
while ishandle(plotGraph1)
dat1 = read_HX711(loadcell)-1940.225269
count = count + 1;
time(count) = toc;
data1(count) = dat1(1);
set(plotGraph1,'XData',time,'YData',data1);
axis([0 time(count) min1 max1]);
pause(delay);
end
hlod on
while ishandle(plotGraph2)
dat2 = readVoltage(a,'A0')*80
count = count + 1;
time(count) = toc;
data2(count) = dat2(1);
set(plotGraph2,'XData',time,'YData',data2);
axis([0 time(count) min2 max2]);
pause(delay);
end
delete(a);
disp('Plot Closed and arduino object has been deleted');
hold on
  2 个评论
Hans123
Hans123 2019-4-18
% Would fix problem 1
clear
clc
a=arduino('com3','Uno')
loadcell=addon(a,'ExampleAddon/HX711',{'D2','D3'})
plotTitle1 = 'Load VS Time';
xLabel1 = 'Elapsed Time (s)';
yLabel1 = 'Load (KN)';
legend1 = 'Load Cell 1'
plotTitle2 = 'Displacement VS Time';
xLabel2 = 'Elapsed Time (s)';
yLabel2 = 'Displacement (mm)';
legend2 = 'Displacement Sensor 1'
yMax1 = 10000000
yMin1 = 0
yMax2 = 10000000
yMin2 = 0
plotGrid = 'on';
min1 = 0;
max1 = 10000;
min2 = 0;
max2 = 10000;
delay = .001;
time = 0;
data1 = 0;
data11 = 0;
data12 = 0;
data2 = 0;
data21 = 0;
data22 = 0;
count = 0;
subplot(2,4,1)
plotGraph1 = plot(time,data1,'-r')
title(plotTitle1,'FontSize',5);
xlabel(xLabel1,'FontSize',5);
ylabel(yLabel1,'FontSize',5);
axis([yMin1 yMax1 min1 max1]);
subplot(2,4,2)
plotGraph2 = plot(time,data2,'-r')
hold on
title(plotTitle2,'FontSize',5);
xlabel(xLabel2,'FontSize',5);
ylabel(yLabel2,'FontSize',5);
axis([yMin2 yMax2 min2 max2]);
grid(plotGrid);
tic
while ishandle(plotGraph1)
dat1 = read_HX711(loadcell)-1940.225269
count = count + 1;
time(count) = toc;
data1(count) = dat1(1);
set(plotGraph1,'XData',time,'YData',data1);
axis([0 time(count) min1 max1]);
pause(delay);
end
hlod on
while ishandle(plotGraph2)
dat2 = readVoltage(a,'A0')*80
count = count + 1;
time(count) = toc;
data2(count) = dat2(1);
set(plotGraph2,'XData',time,'YData',data2);
axis([0 time(count) min2 max2]);
pause(delay);
end
delete(a);
disp('Plot Closed and arduino object has been deleted');
hold on
Ameen Mouazzen
Ameen Mouazzen 2019-4-18
编辑：Ameen Mouazzen 2019-4-18
thank you very much for your help.
but this change made all graphs show no results at all

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回答（1 个）

Yashika
Yashika 2019-4-19
use 'figure()' when you need further plots in different figure.
for eg,
figure(1)
plot(x1,y1)
hold on;
figure(2)
plot(x2,y2)
hold off
and the remaing thing like axis labels, legends you can write before hold on/off.
  1 个评论
Ameen Mouazzen
Ameen Mouazzen 2019-4-19
thank you very much.
I tried this but didn't change anything.
I'm sure I did it wrong.
can you please check?
clear
clc
a=arduino('com3','Uno')
loadcell=addon(a,'ExampleAddon/HX711',{'D2','D3'})
plotTitle1 = 'Load VS Time';
xLabel1 = 'Elapsed Time (s)';
yLabel1 = 'Load (KN)';
legend1 = 'Load Cell 1'
plotTitle2 = 'Displacement VS Time';
xLabel2 = 'Elapsed Time (s)';
yLabel2 = 'Displacement (mm)';
legend2 = 'Displacement Sensor 1'
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
yMax1 = 10000000
yMin1 = 0
yMax2 = 10000000
yMin2 = 0
plotGrid = 'on';
min1 = 0;
max1 = 10000;
min2 = 0;
max2 = 10000;
delay = .001;
time = 0;
data1 = 0;
data11 = 0;
data12 = 0;
data2 = 0;
data21 = 0;
data22 = 0;
count = 0;
subplot(2,4,1)
plotGraph1 = plot(time,data1,'-r')
subplot(2,4,2)
plotGraph2 = plot(time,data2,'-r')
hold on
title(plotTitle1,'FontSize',5);
xlabel(xLabel1,'FontSize',5);
ylabel(yLabel1,'FontSize',5);
axis([yMin1 yMax1 min1 max1]);
title(plotTitle2,'FontSize',5);
xlabel(xLabel2,'FontSize',5);
ylabel(yLabel2,'FontSize',5);
axis([yMin2 yMax2 min2 max2]);
grid(plotGrid);
tic
figure (1)
while ishandle(plotGraph1)
dat1 = read_HX711(loadcell)-1940.225269
count = count + 1;
time(count) = toc;
data1(count) = dat1(1);
set(plotGraph1,'XData',time,'YData',data1);
axis([0 time(count) min1 max1]);
pause(delay);
end
hold on
figure (2)
while ishandle(plotGraph2)
dat2 = readVoltage(a,'A0')*80
count = count + 1;
time(count) = toc;
data2(count) = dat2(1);
set(plotGraph2,'XData',time,'YData',data2);
axis([0 time(count) min2 max2]);
pause(delay);
end
hold off
delete(a);
disp('Plot Closed and arduino object has been deleted');

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