Marco7
20th May 2011, 10:27
Hi everybody,
is there a way to transpose the xAxis and the yAxis (e.g. xAxis pointing up, yAxis pointing to right) in a QwtPlotSpectrogram.
The reason why I don't simply change the data is that I want to make a fast animation of a large matrix and with
setValueMatrix(QVector.mid(0,i*n_cols),n_cols) I can very efficiently extract a sub-matrix but then the animation is row-wise instead of column-wise.
Thanks a lot
Marco
is there a way to transpose the xAxis and the yAxis (e.g. xAxis pointing up, yAxis pointing to right) in a QwtPlotSpectrogram.
The reason why I don't simply change the data is that I want to make a fast animation of a large matrix and with
setValueMatrix(QVector.mid(0,i*n_cols),n_cols) I can very efficiently extract a sub-matrix but then the animation is row-wise instead of column-wise.
Thanks a lot
Marco