Dmitry Malyshev / ctools

The usepnt parameter now signals when the pointing should be used as ROI centre. This allows arbitrary values for ra/dec (before, ra=0 and dec=0 signalled that the pointing should be used).

The tool now uses the new GTime interface. In particular, the input time is now given in CTA reference time in seconds.

Filenames are now always accessed using the filename() method so that environment variables get correctly expanded.

The prefix is now accessed using the string() method instead of the generic value() method, so that string checkings can be performed.

We use the value() method instead of the filename() method to retrieve the output filename as we do not want to check whether the file exists.

…FITS file will be written. Note that the empty FITS file will have no columns. This should probably be changed on the lower (GammaLib) level.

…to understand for the user.

Instead of reading ahead the output parameter, I added a flag that signals when ahead reading is desired.

…rocessing collections of event lists with a single ctselect run.

…ointing as ROI centre

…for observation access