how to run two usb webcams in matlab simutaneoulsy

I have to connect two usb webcams simultaneously in Matlab and im using Windows 7 with 4gb RAM. The problem is it shows feed just from one camera and not the other one where as i want both the cameras to run simultaneously. Please help me how to do it.

P.S i do write imaqreset in command window after running the code everytime so its not a problem. Here is my Matlab code % Create video input object. %vid = videoinput('winvideo',1,'RGB24_320x240')

    vid1 = videoinput('winvideo',1,'YUY2_320x240')
    vid2 = videoinput('winvideo',2,'YUY2_320x240')

    % Set video input object properties for this application.
    set(vid1,'TriggerRepeat',Inf);
    set(vid2,'TriggerRepeat',Inf);

    vid1.FrameGrabInterval = 1;
    vid2.FrameGrabInterval = 1;

    set(vid1,'ReturnedColorSpace','rgb');
    set(vid2,'ReturnedColorSpace','rgb');

    set(vid1,'FramesPerTrigger', 1000);
    set(vid2,'FramesPerTrigger', 1000);

    temp1=zeros(240,320,3);
    temp2=zeros(240,320,3);

    % Create a figure window.
    h1=imshow(uint8(temp1));
    h2=imshow(uint8(temp2));

    pause(0.01)
    hold on;
    '---------'

    % Start acquiring frames.
    start(vid1)
    start(vid2)

    while(vid1.FramesAcquired<=100 && vid2.FramesAcquired<=100)   % Stop after 100 frames
        tic
        data1 = getdata(vid1,1);
        data2 = getdata(vid2,1);
        set(h1,'Cdata',data1);
        set(h2,'Cdata',data2);
        flushdata(vid1);
        flushdata(vid2);
        toc
    end
    stop(vid1)
    stop(vid2)
    delete(vid1)
    delete(vid2)
    % %clear
    % close(gcf)

Answer 1

[sadaf Shahid]

The problem is being solved :) Just write figure after h1=imshow(uint8(temp1));

Both cameras feed will be shown :D