animint: Interactive animations

works_with_R("3.0.2",
             "tdhock/ggplot2@98cefe4d653ce8f214177b66dc030c2f3c725ffb",
             "tdhock/animint@c4ff92d8c4edf523d20c6022fb3b515b19974b8b")
data(UStornadoes)
stateOrder <- data.frame(state = unique(UStornadoes$state)[order(unique(UStornadoes$TornadoesSqMile), decreasing=T)], rank = 1:49) # order states by tornadoes per square mile
UStornadoes$state <- factor(UStornadoes$state, levels=stateOrder$state, ordered=TRUE)
UStornadoes$weight <- 1/UStornadoes$LandArea
# useful for stat_bin, etc. 

USpolygons <- map_data("state")
USpolygons$state = state.abb[match(USpolygons$region, tolower(state.name))]

statemap <- ggplot() + geom_polygon(data=USpolygons, aes(x=long, y=lat, group=group), fill="black", colour="grey") +
  geom_segment(data=UStornadoes, aes(x=startLong, y=startLat, xend=endLong, yend=endLat, size=trackWidth), colour="#55B1F7", alpha=.2) +
  geom_segment(data=UStornadoes, aes(x=startLong, y=startLat, xend=endLong, yend=endLat, size=trackWidth, alpha=f), colour="#55B1F7") +
  scale_size_continuous("Width (yd)", range=c(.5, 2)) + 
  scale_alpha_continuous("Strength (F or EF scale)", range=c(.3, 1)) + 
  ggtitle("Tornado Paths, 1950-2006")

## ERROR: geom_bar + stat_bin + clickSelects does not make sense! We
## should stop with an error!
tornado.bar <-
  list(map=ggplot()+
       geom_polygon(aes(x=long, y=lat, group=group),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour="#55B1F7", data=UStornadoes),
       ts=ggplot()+
       geom_bar(aes(year, clickSelects=year),data=UStornadoes))
gg2animint(tornado.bar, "tornado-bar")

## OK: stat_summary + clickSelects ensures unique x values.
tornado.bar <-
  list(map=ggplot()+
       geom_polygon(aes(x=long, y=lat, group=group),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour="#55B1F7", data=UStornadoes),
       ts=ggplot()+
       stat_summary(aes(year, year, clickSelects=year),
                    data=UStornadoes, fun.y=length, geom="bar"))
gg2animint(tornado.bar, "tornado-bar")

## Same plot, using make_bar abbreviation.
tornado.bar <-
  list(map=ggplot()+
       geom_polygon(aes(x=long, y=lat, group=group),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour="#55B1F7", data=UStornadoes),
       ts=ggplot()+
       make_bar(UStornadoes, "year"))
gg2animint(tornado.bar, "tornado-bar")

UStornadoCounts <-
  ddply(UStornadoes, .(state, year), summarize, count=length(state))
## OK: select state to show that subset of bars!
tornado.ts.bar <-
  list(map=ggplot()+
       make_text(UStornadoCounts, -100, 50, "year", "Tornadoes in %d")+
       geom_polygon(aes(x=long, y=lat, group=group, clickSelects=state),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour="#55B1F7", data=UStornadoes),
       ts=ggplot()+
       make_text(UStornadoes, 1980, 200, "state")+
       geom_bar(aes(year, count, clickSelects=year, showSelected=state),
                data=UStornadoCounts, stat="identity", position="identity"))
gg2animint(tornado.ts.bar, "tornado-ts-bar")
## also show points.
seg.color <- "#55B1F7"
tornado.points <-
  list(map=ggplot()+
       make_text(UStornadoCounts, -100, 50, "year", "Tornadoes in %d")+
       geom_polygon(aes(x=long, y=lat, group=group, clickSelects=state),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour=seg.color, data=UStornadoes)+
       ## geom_point(aes(startLong, startLat, fill=place, showSelected=year),
       ##              colour=seg.color,
       ##            data=data.frame(UStornadoes,place="start"))+
       scale_fill_manual(values=c(end=seg.color))+
       geom_point(aes(endLong, endLat, fill=place, showSelected=year),
                    colour=seg.color,
                  data=data.frame(UStornadoes,place="end")),
       width=list(map=1500, ts=300),
       height=list(map=1000, ts=300),
       ts=ggplot()+
       make_text(UStornadoes, 1980, 200, "state")+
       geom_bar(aes(year, count, clickSelects=year, showSelected=state),
                data=UStornadoCounts, stat="identity", position="identity"))
gg2animint(tornado.points, "tornado-points")

## It would be nice to be able to specify the width/height using
## animint.* theme options, but this gives an error in ggplot2
## 1.0... the work-around is to use tdhock/ggplot2.
tornado.points <-
  list(map=ggplot()+
       make_text(UStornadoCounts, -100, 50, "year", "Tornadoes in %d")+
       geom_polygon(aes(x=long, y=lat, group=group, clickSelects=state),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour=seg.color, data=UStornadoes)+
       scale_fill_manual(values=c(end=seg.color))+
       theme_animint(width=750, height=500)+
       geom_point(aes(endLong, endLat, fill=place, showSelected=year),
                    colour=seg.color,
                  data=data.frame(UStornadoes,place="end")),
       ts=ggplot()+
       make_text(UStornadoes, 1980, 200, "state")+
       geom_bar(aes(year, count, clickSelects=year, showSelected=state),
                data=UStornadoCounts, stat="identity", position="identity"))
gg2animint(tornado.points, "tornado-points")

## Tornado multiple selection.
tornado.lines <-
  list(map=ggplot()+
       make_text(UStornadoCounts, -100, 50, "year", "Tornadoes in %d")+
       geom_polygon(aes(x=long, y=lat, group=group, clickSelects=state),
                    data=USpolygons, fill="black", colour="grey") +
       geom_segment(aes(x=startLong, y=startLat, xend=endLong, yend=endLat,
                        showSelected=year),
                    colour=seg.color, data=UStornadoes)+
       scale_fill_manual(values=c(end=seg.color))+
       theme_animint(width=750, height=500)+
       geom_point(aes(endLong, endLat, fill=place, showSelected=year),
                    colour=seg.color,
                  data=data.frame(UStornadoes,place="end")),
       ts=ggplot()+
       geom_text(aes(year, count, showSelected=state, label=state),
                 data=subset(UStornadoCounts, year==max(year)))+
       geom_line(aes(year, count,
                     clickSelects=year,
                     showSelected=state,
                     group=state),
                data=UStornadoCounts, hjust=0),
       selector.types=list(state="multiple"))
gg2animint(tornado.lines, "tornado-lines")