Suwon Jung's Class Activity 3

Class-Activity-3_JUNG.Rmd

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+---
+title: "class activity 3"
+author: "Charles Lang"
+date: "10/2/2018"
+output: html_document
+---
+
+#Mapping aesthetic to data to = layer
+```{r}
+install.packages("ggplot2")
+library(ggplot2)
+
+ggplot(diamonds, aes(x = price, y = carat)) +
+  geom_point()
+```
+
+#Two layers
+```{r}
+ggplot(mpg, aes(reorder(class, hwy), hwy)) +
+  geom_jitter() +
+  geom_boxplot()
+```
+
+```{r}
+
+#Plot count
+ggplot(diamonds, aes(depth)) +
+  geom_histogram(aes(y = ..count..), binwidth=0.2) +
+  facet_wrap(~ cut) + xlim(50, 70)
+
+#Plot density
+ggplot(diamonds, aes(depth)) +
+  geom_histogram(aes(y = ..density..), binwidth=0.2) +
+  facet_wrap(~ cut) + xlim(50, 70)
+```
+
+```{r}
+ggplot(mpg, aes(displ, hwy, color = class)) +
+  geom_point()
+
+```
+
+Can you create a line graph using the "economics_long" data set that shows change over time in "value01" for different categories of "variable"?
+
+```{r}
+economics_long <- economics_long
+
+library(RColorBrewer)
+
+display.brewer.all() 
+cols <- brewer.pal(n = 8, name = "Accent")
+pal <- colorRampPalette(cols)
+
+ggplot(economics_long, aes(x=date, y=value01, color = variable), group=variable) + geom_line()
+
+```
+
+If you would like to recreate the Minard graphic of Napoleon's Troops the code is below and the data is in this repo.
+
+```{r}
+
+ggplot(cities, aes(long, lat)) +
+  geom_path(aes(size = survivors, colour =
+direction,
+    group = interaction(group, direction)), data =
+troops) +
+  geom_text(aes(label = city), hjust = 0, vjust = 1,
+size = 4)
+# Polish appearance
+last_plot() +
+  scale_x_continuous("", limits = c(24, 39)) +
+  scale_y_continuous("") +
+  scale_colour_manual(values = c("grey50","red")) 
+  scale_size(c(1, 10))
+
+```
+