If you remove State from the second Longitude marks card, you'll have something like the attached - what is the purpose of the secondary axis here?
I also attached an alternative that you can play around with in V 10.2 (I don't think it's exactly what you're after but perhaps it will generate some ideas) -- as an FYI, I was using 10.5 and it looked the same there. If you can mock up what you're after, I can try and help you create that!
If you use two axes, just be sure to set up each version of the marks card independently to generate what you're after (as a general tip).
Regards and best wishes!
demo_v10.2 alternate ML.twbx 675.3 KB
Thank you for your reply.
However, I do need the dual axis. Since I want to show the state boundary + filled map. However, the color is filled into based on the zipcode, not state.
Basically, I put "fill map" with no color only boudary for state boundary map as dual axis.
Do you think it is because of dual axis together to make the boundary not clean?
There's something on the Map(s)
that couldn't be easily revealed,
but it's there.
There are Marks (they are Zip5-bound)
that have no shapes in Tableau geo-database.
So Tableau is placing dots for them by default --
even if the Filled Map view is in use.
And dots in Tableau tend to be of a fixed size.
Zooming out, they become relatively bigger, hence a 'halo' effect.
Please find the attached with that revealed.
demo_v10.2_YF.twbx 839.9 KB
Sorry for replying your answer late.
Thank you for pointing that out. Basically, there is no way to change that right? ( clean bound and zip5 level detailed information)
(since currently, tableau could not geocode zip3, if I use zip5 as base gecoding information, the marker will always be there.)
You may want to create a Custom Geo Role
(based on zip5) for a copy of [Dest Zip3] pill.
No halo (almost), though the rendering would be slow.
Please find the attached w/mod.
demo_v10.2_mod_YF.twbx 872.0 KB