psy-view: Small bugs and mysteries

[StefanHagemann]

1. Example: An array ranges from 0-250
   -> If one inserts the plot range 0 to 5 under colormap, all tickmarks are gone except 0.
   Solution: one has to replot the plot with the replot button. However, if the user does not know this, it is confusing as it seems that the replotting is taking place after confirming the new range.

2. colormap -> I cannot type negative numbers as lower boundary.

3. Why psy-view shows a rounded lon /lat and in brackets the detailed lon/lat? ncview shows indices and lon lat in brackets.

4. Is there any file with default settings that is read when starting psay-view, and that may be edited?
For example, to replace the viridis colormap by the jet colormap. I could not find any information on the psy-view webpage.