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Update ufo_sightings.R FOR R version 3.4.1 #49

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Update ufo_sightings.R FOR R version 3.4.1 #49

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8 changes: 4 additions & 4 deletions 01-Introduction/ufo_sightings.R
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Original file line number Diff line number Diff line change
Expand Up @@ -118,7 +118,7 @@ head(ufo.us)
# We can do this by creating a histogram of frequencies for UFO sightings over time
quick.hist <- ggplot(ufo.us, aes(x = DateOccurred)) +
geom_histogram() +
scale_x_date(breaks = "50 years")
scale_x_date(date_breaks = "50 years",date_labels = "%Y")

ggsave(plot = quick.hist,
filename = file.path("images", "quick_hist.pdf"),
Expand All @@ -134,7 +134,7 @@ new.hist <- ggplot(ufo.us, aes(x = DateOccurred)) +
geom_histogram(aes(fill='white', color='red')) +
scale_fill_manual(values=c('white'='white'), guide="none") +
scale_color_manual(values=c('red'='red'), guide="none") +
scale_x_date(breaks = "50 years")
scale_x_date(date_breaks = "50 years",date_labels = "%Y")

ggsave(plot = new.hist,
filename = file.path("images", "new_hist.pdf"),
Expand Down Expand Up @@ -204,7 +204,7 @@ state.plot <- ggplot(all.sightings, aes(x = YearMonth,y = Sightings)) +
facet_wrap(~State, nrow = 10, ncol = 5) +
theme_bw() +
scale_color_manual(values = c("darkblue" = "darkblue"), guide = "none") +
scale_x_date(breaks = "5 years", labels = date_format('%Y')) +
scale_x_date(date_breaks = "5 years", date_labels = "%Y") +
xlab("Years") +
ylab("Number of Sightings") +
ggtitle("Number of UFO sightings by Month-Year and U.S. State (1990-2010)")
Expand All @@ -229,7 +229,7 @@ state.plot.norm <- ggplot(all.sightings, aes(x = YearMonth,y = Sightings.Norm))
facet_wrap(~State, nrow = 10, ncol = 5) +
theme_bw() +
scale_color_manual(values = c("darkblue" = "darkblue"), guide = "none") +
scale_x_date(breaks = "5 years", labels = date_format('%Y')) +
scale_x_date(date_breaks = "5 years", date_labels = "%Y") +
xlab("Years") +
ylab("Per Capita Number of Sightings (2000 Census)") +
ggtitle("Number of UFO sightings by Month-Year and U.S. State (1990-2010)")
Expand Down