To be able to handle NAs we need to add the parameter: na.action = na.omit,...

See merge request !28

To be able to handle NAs we need to add the parameter: na.action = na.omit, this is, omit pixels with NA value.

update Progressbar

See merge request !27

Carsten optimization

See merge request !26

Offer the options to overwrite files. In case the file exists and the user did...

See merge request !25

Merge branch 'fix_write_sample_points' of git.gfz-potsdam.de:habitat-sampler/HabitatSampler into fix_write_sample_points

Offer the options to overwrite files. In case the file exists and the user did not choose the option to overwrite, raise an error.

When results is NULL, we should create an empty SpatialPolygonsDataframe. To...

See merge request !24

When results is NULL, we should create an empty SpatialPolygonsDataframe. To save empty SpatialTemporalDataframes we need to use sf, since it supports the empty Geometries.