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class activity 3 - Luyi Dai #6

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class activity 3 - Luyi Dai #6

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class activity 3
luyidai Oct 1, 2019
be0b9a4
updata year
luyidai Oct 1, 2019
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12 changes: 7 additions & 5 deletions class-activity-3.Rmd
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
---
title: "class activity 3"
author: "Charles Lang"
date: "10/2/2018"
author: "Luyi Dai"
date: "10/1/2019"
output: html_document
---

Expand Down Expand Up @@ -43,13 +43,15 @@ ggplot(mpg, aes(displ, hwy, color = class)) +
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}

ggplot(economics_long, aes(x=date, y=value01, colour = 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}

cities <- read.table("cities.txt", header = TRUE)
troops <- read.table("troops.txt", header = TRUE)
ggplot(cities, aes(long, lat)) +
geom_path(aes(size = survivors, colour =
direction,
Expand All @@ -62,6 +64,6 @@ last_plot() +
scale_x_continuous("", limits = c(24, 39)) +
scale_y_continuous("") +
scale_colour_manual(values = c("grey50","red")) +
scale_size(to = c(1, 10))
scale_size(range = c(1, 10))
```