How can i plot graph of the data coming from serial comm

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Gaurav Khadasane
Gaurav Khadasane 2015-1-24
编辑： Gaurav Khadasane 2015-1-27
i have try a lot to get plotted the multiple data on graph but was not successfull if any one have a sample program to guide me..
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Chris Barnhart
Chris Barnhart 2015-1-24
Not sure what the question is. Are you able to receive data from the serial port (and turn it into numbers)? Or is the problem related to plotting?
http://www.mathworks.com/help/matlab/creating_plots/animation-techniques.html

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Gaurav Khadasane
Gaurav Khadasane 2015-1-27
编辑：Gaurav Khadasane 2015-1-27
if true
s = serial('com4');
%set(s, ‘ Terminator’, ‘LF’); % Default terminator is \n
set(s,'BaudRate', 9600);
set(s,'DataBits', 8);
set(s,'StopBits', 1);
fopen(s);
s.ReadAsyncMode = 'continuous';
% Various variables numberOfDatas = 20;
i = 1; d = 0;
% Main graph figure figure(1); hold on;
% Start asynchronous reading
readasync(s);
while(i<=numberOfDatas)
if((fscanf(s,'%c',1)) == '#')
d = [fscanf(s,'%c',3)];
end
% Plot the data
figure(1);
subplot(2,2,1);
plot(i,d,'--rs','LineWidth',2,...
'MarkerEdgeColor','k',...
'MarkerFaceColor','g',...
'MarkerSize',10)
axis([0 20 0 1000])
if(i>20)
xlim([i-10 i]);
set(gca,'xtick',[i-10 i-9 i-8 i-7 i-6 i-5 i-4 i-3 i-2 i-1 i])
end
subplot(2,2,2);
plot(i, data(i), '*');
axis([0 20 0 1000])
hold on;
if(i>20)
xlim([i-10 i]);
set(gca,'xtick',[i-10 i-9 i-8 i-7 i-6 i-5 i-4 i-3 i-2 i-1 i])
end
subplot(2,2,3);
plot(i, data(i), '*');
axis([0 20 0 1000])
% Ensure there are always 10 tick marks on the graph
if(i>20)
xlim([i-10 i]);
set(gca,'xtick',[i-10 i-9 i-8 i-7 i-6 i-5 i-4 i-3 i-2 i-1 i])
end
subplot(2,2,4);
plot(i, data(i), '*');
axis([0 20 0 1000])
% Ensure there are always 10 tick marks on the graph
if(i>20)
xlim([i-10 i]);
set(gca,'xtick',[i-10 i-9 i-8 i-7 i-6 i-5 i-4 i-3 i-2 i-1 i])
end
% Draw and flush
drawnow;
%Increment the counter
i=i+1;
end % Give the external device some time… pause(3);
% Some of these crash the program – it depends. The serial port is left % open, which is not good. %stopasync(s); fclose(s); % bad %delete(s); %clear s; end
in this code i try to plot the 4 subplot but i m not able to get the logic how to distinguish the 4 different data coming from the serial comm and plot it.

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