Reorder factor in polycharts heatmap rCharts

Question

Is there anyway to reorder factors in a polycharts heatmap in rCharts?

I have tried reorder it in data frame, but no luck.

library(rCharts)

dat <- data.frame(day1=rep(c("day 1", "day 2" ,"day 10"),3),
                 day2=rep(c("Mon","Sun","wed"),3),
                 value=1:9) 
dat$day1 <- factor(dat$day1, levels = c('day 1', 'day 2', 'day 10'))

plot <- rPlot(day1 ~ day2, color = 'value', data = dat ,type = 'tile', height = 600) 

plot

Answer 1

You can specify the sort order with guides :

library(rCharts)

dat <- data.frame(day1=rep(c("day 1", "day 2" ,"day 10"),3),
                  day2=rep(c("Mon","Sun","wed"),3),
                  value=1:9) 

plot <- rPlot(day1~day2, color = 'value', data = dat, type = 'tile') 

# reverse the levels if you want the axis ordered in reverse

plot$guides(x = list(levels = c('Sun', 'Mon', 'wed')),
            y = list(levels = c('day 1', 'day 2', 'day 10')))

# i think you need to specify width & height this way

plot$addParams(width = 400, height = 400)

plot

Answer 2

You could try appending a zero before all single digit entries under dat$day1 . Its not the neatest solution but after trying this out and not succeeding , it would seem that rPlot prioritizes alphabetical ordering over factor levels. Looking forward to a neater solution from someone :-)

dat<-data.frame(day1=rep(c("day 01", "day 02" ,"day 10"),3),
                day2=rep(c("Mon","Sun","wed"),3), value=1:9)`

dat$day1 <- factor(dat$day1, levels = c('day 01', 'day 02', 'day 10'), ordered=T)

plot <- rPlot(day1 ~ day2, color = 'value', data = dat ,type ='tile', height=600)
plot