Make sure these boxes are checked before submitting your issue - thank you!
- [ x] I have checked the superset logs for python stacktraces and included it here as text if any - [ x] I have reproduced the issue with at least the latest released version of superset - [ x] I have checked the issue tracker for the same issue and I haven't found one similar ### Superset version 0.26.2 to latest version ### Expected results ### Actual results the marker of bullet chart is fixed value, can we made it to some predictable equations? For example, the target income of this week may vary depending on some variables. So we need an equation to calculate this marker instead of input a list of fixed number . <img width="830" alt="screen shot 2018-09-27 at 2 29 06 pm" src="https://user-images.githubusercontent.com/8351385/46127092-28afe600-c262-11e8-8548-05dc1de41bf3.png";> ### Steps to reproduce 1. create a chart 2. choose `Bullet Chart` 3. in chart options, there is `Markers` of this bullet chart [ Full content available at: https://github.com/apache/incubator-superset/issues/5986 ] This message was relayed via gitbox.apache.org for [email protected]
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