Interactive inputs bound to arrow keys.
left_right(min, max, value = (min + max)/2, step = (max - min)/40)up_down(min, max, value = (min + max)/2, step = (max - min)/40)
A minimum value.
A maximum value.
The initial value before any keys are pressed. Defaults to
half-way between min and max.
How much each key press changes value. Defaults to
40 steps along range
size <- left_right(1, 801, value = 51, step = 50)
opacity <- up_down(0, 1, value = 0.9, step = 0.05)
mtcars %>% ggvis(~mpg, ~wt, size := size, opacity := opacity) %>%
layer_points()
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