Two points:

1. grdimage also has the same -T option, which is not aliased yet
2. Instead of just alias -T to no_interpolate, we may want to more Pythonic parameters.

Two points:

1. grdimage also has the same -T option, which is not aliased yet

Thanks for pointing out! Included in commit 28bf914.

2. Instead of just alias -T to no_interpolate, we may want to more Pythonic parameters.

You mean splitting the functionality of -T to have additionally separate parameters for +o and +s?

You mean splitting the functionality of -T to have additionally separate parameters for +o and +s?

Yes.

The full syntax of the -T option is -T[+o[<pen>]][+s], so here are all the possibilities:

• -T
• -T+s
• -T+o
• -T+s+o
• -T+o<pen>
• -T+o<pen>+s

Instead of alias -T to no_interpolation, maybe we can alias is to tileplot instead? The name tileplot comes from the comment
here https://github.com/GenericMappingTools/gmt/blob/586699fa813c176cd271793bcd375a6f722c56f6/src/grdview.c#L708, although GMT uses no_interp at https://github.com/GenericMappingTools/gmt/blob/586699fa813c176cd271793bcd375a6f722c56f6/src/longopt/grdview_inc.h#L43.

So, we can use two parameters tileplot and tile_outline:

• -T => tileplot=True
• -T+s => tileplot="skipnans"
• -T+o => tile_outline=True
• -T+s+o => tileplot="skipnans", tile_outline=True
• -T+o<pen> => tile_outline=<pen>
• -T+o<pen>+s => tileplot="skipnans", tile_outline=<pen>