First subplot too big when using layout.grid attribute

[michaelbabyn]

I can already use plotly.js's grid layout attribute to make subplots with pie charts and 3d charts in R (ie traces with a domain attribute) but specifying subplots using x and y axes doesn't work because plotly_build sets a default domain of [0,1] for the first xaxis and yaxis.

p <- plot_ly(type = 'scatter',mode = 'lines', y = c(5,1,3), xaxis = 'x', yaxis = 'y') %>%
  add_trace(y = c(2,1,5), xaxis = 'x2', yaxis = 'y2') %>%
  add_trace(y = c(2,1,5), xaxis = 'x3', yaxis = 'y3')%>%
  add_trace(y = c(2,1,5), xaxis = 'x4', yaxis = 'y4')%>%
  add_trace(y = c(2,1,5), xaxis = 'x5', yaxis = 'y5')%>%
  add_trace(y = c(2,1,5), xaxis = 'x6', yaxis = 'y6')%>%
  layout(grid = list(rows = 2, columns = 3, pattern ='independent'))
p