In Shiny selectizeInput, if nothing is selected, it returns NULL.
I wonder if there is a similar update version for numericInput which takes multiple values, e.g. c(2,4) or 5:9, and returns NULL for missing input?
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Roy C
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2maybe this would help -- http://stackoverflow.com/questions/24960407/r-shiny-numeric-input-without-selectors – JohnSG Apr 29 '16 at 19:30
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Yes, you're right. Thank you. – Roy C Apr 29 '16 at 19:50