MATLAB: Get data in real time, draw graphics changing in real time.

real time graphics

Hi, I'm getting real-time data from the manipulator, its current position.
channel = ddeinit('ipc_data', 'ipc_1');
data(1,1)=ddereq(channel,'mw1311'); % X coordinate
data(1,2)=ddereq(channel,'mw1312');% Y coordinate
data(1,3)=ddereq(channel,'mw1313');% Z coordinate
I need to represent the manipulator's position on the chart. and when the manipulator moves, it should be evident in the chart.

Best Answer

clf
p=plot3(nan,nan,nan);
while 1
data(1,1)=ddereq(channel,'mw1311'); % X coordinate

data(1,2)=ddereq(channel,'mw1312');% Y coordinate

data(1,3)=ddereq(channel,'mw1313');% Z coordinate 
set(p,'XData',[0 data(1,1)],'YData',[0 data(1,2)],'ZData',[0 data(1,3)])
pause(0.5) %read and draw data every 0.5 seconds
end
To stop the loop do CTRL+C
Alternative way, using a timer:
function test
fig=figure;
set(fig,'CloseRequestFcn','delete(gcf);')
h = plot3(NaN, NaN, NaN,'LineWidth',5);
t = timer('TimerFcn',@readdata,...
    'Period', 0.5,'executionmode','fixedSpacing');start(t)
    function readdata(g1,gg1)
        if (~ishandle(fig)),stop(t),return,end
        data(1,1)=ddereq(channel,'mw1311'); % X coordinate
        data(1,2)=ddereq(channel,'mw1312');% Y coordinate
        data(1,3)=ddereq(channel,'mw1313');% Z coordinate
        set(p,'XData',[0 data(1,1)],'YData',[0 data(1,2)],'ZData',[0 data(1,3)])
    end
end
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