Hi! On Tuesday 30 July 2013 16:45:21 Birk Diedenhofen wrote: > I ran into the following issue with my rkward plugin. I'm trying to show > and hide GUI elements depending on the value of a spinbox. If the > spinbox value is zero, the text element stating "spinbox value is zero" > should be shown on the following wizard page (see code example below). > If the spinbox value is not zero, the text element stating "spinbox > value is not zero" should be shown. However, irrespective of the spinbox > value, I always get "spinbox value is not zero".
It's a rounding / floating point precision issue. One of the zeros is not quite the same as the other, for some reason. For the moment, the best workaround will be to use value.is.zero.convert <- rk.XML.convert(sources=list(real=spinbox.value), mode=c(min=-0.0000001, max=0.0000001), id.name="value_is_zero_convert") Probably for real-mode equality comparisons something along these lines should be done automatically, internally. BTW: No need to define complementary converts. Simply use rk.XML.connect(governor=value.is.zero.convert, not=TRUE, client=spinbox.value.is.not.zero, set="visible") (For those not using rkwarddev: This uses the ".not" sub-property of the governor.) Regards Thomas
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