tm_syle() produces strange results

[jguelat]

The tm_style() function is sometimes producing strange results depending on its position in the code. I'm not totally sure if it's a bug or the desired behavior but this didn't happen with previous tmap versions.

This works well:

tm_shape(World) + tm_polygons(fill = "HPI") +
tm_style("natural") +
tm_title("Happy Planet Index") +
tm_layout(earth_boundary = TRUE, frame = FALSE) +
tm_crs("ESRI:54030")

This produces strange results (outside color, earth boundary not drawn):

tm_shape(World) + tm_polygons(fill = "HPI") +
tm_title("Happy Planet Index") +
tm_layout(earth_boundary = TRUE, frame = FALSE) +
tm_style("natural") +
tm_crs("ESRI:54030")

[mtennekes]

@jguelat :

In earlier tmap versions, the 'natural' style enabled earth boundary. However, not anymore, because it did't work for many projections.

Apart from that, when you call tm_style, all layout options are reset according to that style. So instead, the supposed use is to call tm_layout after tm_style:

tm_shape(World) + tm_polygons(fill = "HPI") +
	tm_title("Happy Planet Index") +
	tm_style("natural") +
	tm_layout(earth_boundary = TRUE, frame = FALSE) +
	tm_crs("ESRI:54030")

I'll add a message to inform users about this.

[jguelat]

Thanks for your explanations! This behavior makes sense and it would be great to add something about this in the help of tm_style