Stripplot - no box or median plotted

[Martyn Sherriff]

I am using stripplot (from SSC) to describe some data:

* Example generated by -dataex-. To install: ssc install dataex
clear
input int v1 byte(v2 v3)
  6 16 24
  6 24 24
 17 32 32
 17 42 42
 17 48 48
 17 48 48
 17 48 48
 17 53 56
 17 56 64
 17 64 64
 17 64 80
 17 64 95
 17 64  8
 17 64  8
 17 80  8
 17 95  8
 17 95  8
 17  8  8
 17  8  8
 17  8  8
 17  8  8
 17  8  8
 17  8  8
 17  8  8
 17  .  8
 17  .  8
 17  .  8
 17  .  8
 17  .  8
 33  .  8
 50  .  8
 50  .  8
 67  .  8
 89  .  8
100  .  8
100  .  8
100  .  8
111  .  8
117  .  8
133  .  8
133  .  8
133  .  8
133  .  8
133  .  8
167  .  8
200  .  8
200  .  8
  .  .  8
  .  .  8
  .  .  8
  .  .  8
end

. tabstat v1 v2 v3, stats(n mean sd p50 p25 p75 iqr min)

. tabstat v1 v2 v3, stats(n mean sd p50 p25 p75 iqr min) f(%5.1f)

   stats |        v1        v2        v3
---------+------------------------------
       N |      47.0      24.0      51.0
    mean |      53.6      42.2      18.4
      sd |      55.9      28.8      21.4
     p50 |      17.0      48.0       8.0
     p25 |      17.0       8.0       8.0
     p75 |     100.0      64.0       8.0
     iqr |      83.0      56.0       0.0
     min |       6.0       8.0       8.0
----------------------------------------

stripplot v1 v2 v3, box vert sch(s1color)

[

When I plot the data I can understand why p25 and p50 are coincident for v1 but I cannot understand why there is no median or quartiles for v3.
It is probably so obvious that I cannot see it but I would be grateful for any help.

Thank you,
Martyn

Stata(IC) 16.1

[Nick Cox]

Well, from your results and from

 stripplot v1 v2 v3 , vertical box cumul scheme(s1color)

it can be seen that median and quartiles coincide at 8 for v3 -- so you're expecting to see a box of zero height. It's there, just hard to see.

(Stata's rules here, not something imposed by or requested by stripplot.)

[Martyn Sherriff]

So obvious I could not see it!

Thank you for the improved plot.

Martyn

[Nick Cox]

You’re welcome. The boxes should be moved left and made thinner.