Hallo everybody,

I would like to use a spectrogram plot in my application. It is a bigger software-project and due to this I have some "boudary conditions" in the project design which I cannot change.

For example:
-The input matrix is a double values matrix and has a maximal size of 192000x140 values.
-As a minimum the application should show every half second an updated version of the spectrogram. (so faster is better...)

I want to use bilinear interpolation.

So the question is:
What would be the optimal approach for an implementation?
-->Should I copy the values in a QVectror like in the "rasterview"-example or should i use the values()-function like in the "spectrogram"-example?

What would be the fastest option? Or is it impossible to show such big images with such a high update-rate?


Thank you very much!!
QTim