How to show two values on the same layer using tm_text?

Question

I am currently trying to show the values of different variables on the same map.

Below is my code:

tm_shape(pv_malay_merge) + 
  tm_fill(col = "Exposure", n = 10, title = "Policyholders' Exposure",
          palette = rev(brewer.pal(n = 4, "RdYlGn"))) +
  tm_borders(lwd = 0.5) +
  tm_text(text = "NAME_1", size = 0.5) +
  tm_shape(malay_merge) +
  tm_bubbles(size = "Exposure")

The code above results in:

Malaysia map

After that I try to change it to:

tm_shape(pv_malay_merge) + 
  tm_fill(col = "Exposure", n = 10, title = "Policyholders' Exposure",
          palette = rev(brewer.pal(n = 4, "RdYlGn"))) +
  tm_borders(lwd = 0.5) +
  tm_text(text = c("NAME_1", "Exposure"), size = 1) +
  tm_shape(malay_merge) +
  tm_bubbles(size = "Exposure")

Notice the change in tm_text() function. This results in:

two Malaysia maps showing different values

Any suggestion on combining the maps?

Including both into one map, would make the map hard to read imo. Furthermore: a [reproducible example](http://stackoverflow.com/questions/5963269) would make it a lot easier for others to help you. — Jaap, Dec 14 '16 at 09:03
@ProcrastinatusMaximus The values will overlap with each other if we separate `tm_text`, I have tried it previously by creating two layers — Hardian Lawi, Dec 15 '16 at 00:37
You can use the `xmod` and the `ymod` parameters to adjust the position of the labels. — Jaap, Dec 15 '16 at 08:07
@ProcrastinatusMaximus Thank you for your suggestion! I will try it — Hardian Lawi, Dec 21 '16 at 09:20

score 2 · Answer 1 · answered Dec 16 '16 at 20:24

You cannot have more than one tm_text layers in one group, so you need two layer groups, e.g.:

tm_shape(pv_malay_merge) + 
  tm_text(text = "NAME_1", size = 0.5) +
tm_shape(pv_malay_merge) + 
  tm_text(text = "Exposure", size = 0.5)

To prevent occlusion, you could use ymod for one of them, as already suggested.

Why are the bubbles not visible? They should work better than text labels imo.

How to show two values on the same layer using tm_text?

1 Answers1