r.to.vect: Flag -e: Erase vector map if empty

[martin]

Avoid creating a pile of empty vector maps upon vectorization of a non-rectangular image in smaller chunks.

[neteler]

An option might be to add a new flag

-e: Erase new vector map if empty

Perhaps there are better options?

[martinl]

Replying to neteler:

Perhaps there are better options?

Just delete the output map automatically if it's empty and print a warning?

[neteler]

Does this module lack the error handler like:

Vect_set_error_handler_io(&In, &Out);

?

[martinl]

In 69234:

r.to.vect: delete output on error (see #2394) - merge r69233 from trunk

[martinl]

Replying to neteler:

Does this module lack the error handler like:

Vect_set_error_handler_io(&In, &Out);

Fixed, anyway this function just delete output map only on failure.

[martinl]

In 69235:

r.to.vect: delete output on error (see #2394) - merge r69233 from trunk

[martinl]

Milestone renamed

[neteler]

Ticket retargeted after milestone closed

[martinl]

All enhancement tickets should be assigned to 7.6 milestone.

[martinl]

Ticket retargeted after milestone closed

[martinl]

Ticket retargeted after milestone closed