Is there any shiny busy indicator that not include the progress bar? just like the "please wait" animation when uploading shiny examples?
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see user1603038's answer here: http://stackoverflow.com/questions/17325521/r-shiny-display-loading-message-while-function-is-running – Fabian Gehring Mar 08 '16 at 18:43
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[This](http://stackoverflow.com/a/40395877/5894457) could be what you are looking for. – SBista Nov 18 '16 at 08:25