Is posible to use "DCT" to reszie data ?

Dear all.

I have problem about DCT function in matlab.

I want to use dct2 function to calculate data and resize it to 1X1.

For example, I have data matrix like

    test=[3.2760    4.4200    1.9000];

Than, I use dct2 function to calculate dct and get data in 1X1.

    testDCT = dct2(test,[1,1])

But result is return the first element.

      testDCT =  3.2760

Am I wrong, or is it the limit of dct2 function?

Best.

Sorry, I give you wrong matrix. V V V

[Walter Roberson]

3.2760 does not look like the first element 5.5403 to me ?