Using clipboard in PyQt

You can use the clipboard in your PyQt plugins by using the QApplication.clipboard().
First you import qthe QApplication from PyQt4.QtGui.

from PyQt4.QtGui import QApplication

Then you can create a variable, for example:

self.clip = QApplication.clipboard()

And then set some text to it:

self.clip.setText('some text')

Numpy - Accumulated and Incremental series

In Hydrology, it is always needed to deal with time-series of variables, as flow series or precipitation series, with the variable being incremental or accumulated.

Numpy has a great way to transform between accumulated and incremental series.

To accumulate a incremental series use the method

   numpy.cumsum(incrementalSeries)

And to transform a accumulated array to a incremental one, use:

    numpy.diff(accumulatedSeries)