plotly · michaelbabyn · Sep 9, 2019 · Aug 12, 2019 · Aug 12, 2019 · Sep 9, 2019
diff --git a/_posts/ggplot2/2016-11-29-geom_tile.Rmd b/_posts/ggplot2/2016-11-29-geom_tile.Rmd
diff --git a/_posts/ggplot2/2016-11-29-geom_tile.md b/_posts/ggplot2/2016-11-29-geom_tile.md
diff --git a/_posts/ggplot2/2019-08-12-geom_tile.Rmd b/_posts/ggplot2/2019-08-12-geom_tile.Rmd
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+---
+title: geom_tile | Examples | Plotly
+name: geom_tile
+permalink: ggplot2/geom_tile/
+description: How to make a 2-dimensional heatmap in ggplot2 using geom_tile.
+layout: base
+thumbnail: thumbnail/geom_tile.jpg
+language: ggplot2
+page_type: example_index
+has_thumbnail: true
+display_as: basic
+order: 8
+output:
+  html_document:
+    keep_md: true
+---
+
+```{r, echo = FALSE, message=FALSE}
+knitr::opts_chunk$set(message = FALSE, warning=FALSE)
+Sys.setenv("plotly_username"="RPlotBot")
+Sys.setenv("plotly_api_key"="q0lz6r5efr")
+```
+
+### New to Plotly?
+
+Plotly's R library is free and open source!<br>
+[Get started](https://plot.ly/r/getting-started/) by downloading the client and [reading the primer](https://plot.ly/r/getting-started/).<br>
+You can set up Plotly to work in [online](https://plot.ly/r/getting-started/#hosting-graphs-in-your-online-plotly-account) or [offline](https://plot.ly/r/offline/) mode.<br>
+We also have a quick-reference [cheatsheet](https://images.plot.ly/plotly-documentation/images/r_cheat_sheet.pdf) (new!) to help you get started!
+
+### Version Check
+
+Version 4 of Plotly's R package is now [available](https://plot.ly/r/getting-started/#installation)!<br>
+Check out [this post](http://moderndata.plot.ly/upgrading-to-plotly-4-0-and-above/) for more information on breaking changes and new features available in this version.
+
+```{r}
+library(plotly)
+packageVersion('plotly')
+```
+
+### Basic geom\_tile graph
+This graph, compiled by [Jeff Zimmerman](https://docs.google.com/spreadsheets/d/1HI-dikWN64clxSGJu2QV8C64R9Bkzt8K-jFaeHj4X7k/edit#gid=0), shows how often hitters swing and miss at fastballs, based on their velocity and spin rate. Colour schemes are from ColorBrewer; a complete list of palettes is available [here](https://ggplot2.tidyverse.org/reference/scale_brewer.html).
+
+```{r, results='hide'}
+library(plotly)
+spinrates <- read.csv("https://raw.githubusercontent.com/plotly/datasets/master/spinrates.csv",
+                      stringsAsFactors = FALSE)
+
+p <- ggplot(spinrates, aes(x=velocity, y=spinrate)) +
+  geom_tile(aes(fill = swing_miss)) +
+  scale_fill_distiller(palette = "YlGnBu") +
+  labs(title = "Likelihood of swinging and missing on a fastball",
+       y = "spin rate (rpm)")
+ggplotly(p)
+
+# Create a shareable link to your chart
+# Set up API credentials: https://plot.ly/r/getting-started
+chart_link = api_create(p, filename="geom_tile/distilled-colour")
+chart_link
+```
+
+```{r echo=FALSE}
+chart_link
+```
+
+### Adjusting appearance
+The *direction* option sets which side of the colour scheme maps onto the low values and which side maps onto the high; it defaults to -1 but could be adjusted to 1.
+
+Also [adjusted the theme](https://ggplot2.tidyverse.org/reference/ggtheme.html).
+
+```{r, results='hide'}
+library(plotly)
+spinrates <- read.csv("https://raw.githubusercontent.com/plotly/datasets/master/spinrates.csv",
+                      stringsAsFactors = FALSE)
+
+p <- ggplot(spinrates, aes(x=velocity, y=spinrate)) +
+  geom_tile(aes(fill = swing_miss)) +
+  scale_fill_distiller(palette = "YlGnBu", direction = 1) +
+  theme_light() +
+  labs(title = "Likelihood of swinging and missing on a fastball",
+       y = "spin rate (rpm)")
+ggplotly(p)
+
+# Create a shareable link to your chart
+# Set up API credentials: https://plot.ly/r/getting-started
+chart_link = api_create(p, filename="geom_tile/customize-theme")
+chart_link
+```
+
+```{r echo=FALSE}
+chart_link
+```
+
+### geom\_tile with viridis colour scheme
+[Viridis colour schemes](https://ggplot2.tidyverse.org/reference/scale_brewer.html) are uniform in both colour and black-and-white, as well as for those with colour-blindness. There are five colour schemes: "magma" (or "A"), "inferno" (or "B"), "plasma" (or "C"), "viridis" (or "D", the default option) and "cividis" (or "E").
+
+```{r, results='hide'}
+library(plotly)
+spinrates <- read.csv("https://raw.githubusercontent.com/plotly/datasets/master/spinrates.csv",
+                      stringsAsFactors = FALSE)
+
+p <- ggplot(spinrates, aes(x=velocity, y=spinrate)) +
+  geom_tile(aes(fill = swing_miss)) +
+  scale_fill_viridis_c(option = "B", direction = -1) +
+  labs(title = "Likelihood of swinging and missing on a fastball",
+       y = "spin rate (rpm)") +
+  theme_light()
+ggplotly(p)
+
+# Create a shareable link to your chart
+# Set up API credentials: https://plot.ly/r/getting-started
+chart_link = api_create(p, filename="geom_tile/viridis")
+chart_link
+```
+
+```{r echo=FALSE}
+chart_link
+```
+