# Installing and loading required packages

if (!require("tidyverse")) install.packages("tidyverse")
## Loading required package: tidyverse
## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
## ✔ dplyr     1.1.4     ✔ readr     2.1.5
## ✔ forcats   1.0.0     ✔ stringr   1.5.1
## ✔ ggplot2   3.4.4     ✔ tibble    3.2.1
## ✔ lubridate 1.9.3     ✔ tidyr     1.3.1
## ✔ purrr     1.0.2     
## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()
## ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errors
if (!require("tidycensus")) install.packages("tidycensus")
## Loading required package: tidycensus
if (!require("sf")) install.packages("sf")
## Loading required package: sf
## Linking to GEOS 3.11.0, GDAL 3.5.3, PROJ 9.1.0; sf_use_s2() is TRUE
if (!require("mapview")) install.packages("mapview")
## Loading required package: mapview
library(tidyverse)
library(tidycensus)
library(sf)
library(mapview)

# Transmitting API key

census_api_key("33060ddff9e66f647b10ef7b540ab19f3dd5e9c4")
## To install your API key for use in future sessions, run this function with `install = TRUE`.
# Fetching ACS codebooks

DetailedTables <- load_variables(2022, "acs5", cache = TRUE)
SubjectTables <- load_variables(2022, "acs5/subject", cache = TRUE)
ProfileTables <- load_variables(2022, "acs5/profile", cache = TRUE)

# Double checking target variables

ChosenVars <- filter(ProfileTables,name == "DP04_0063P"|
                       name == "DP02_0001")
print(ChosenVars$name)
## [1] "DP02_0001"  "DP04_0063P"
print(ChosenVars$label)
## [1] "Estimate!!HOUSEHOLDS BY TYPE!!Total households"                  
## [2] "Percent!!HOUSE HEATING FUEL!!Occupied housing units!!Utility gas"
print(ChosenVars$concept)
## [1] "Selected Social Characteristics in the United States"
## [2] "Selected Housing Characteristics"
# Specifying target variables

VariableList = 
  c(Gas_ = "DP04_0063P",
    Households_ = "DP02_0001")

# Fetching data

mydata <- get_acs(
  geography = "county",
  state = "TN",
  variables = VariableList,
  year = 2022,
  survey = "acs5",
  output = "wide",
  geometry = TRUE)
## Getting data from the 2018-2022 5-year ACS
## Downloading feature geometry from the Census website.  To cache shapefiles for use in future sessions, set `options(tigris_use_cache = TRUE)`.
## Using the ACS Data Profile
## 
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# Reformatting data

mydata <-
  separate_wider_delim(mydata,
                       NAME,
                       delim = ", ",
                       names = c("County", "State"))

# Filtering data

filtereddata <- mydata %>% 
  filter(County == "Davidson County"|
           County == "Rutherford County"|
           County == "Williamson County"|
           County == "Cheatham County"|
           County == "Robertson County"|
           County == "Sumner County"|
           County == "Wilson County")

# Plotting data

ggplot(filtereddata, aes(x = Gas_E, y = reorder(County, Gas_E))) + 
  geom_errorbarh(aes(xmin = Gas_E - Gas_M, xmax = Gas_E + Gas_M)) + 
  geom_point(size = 3, color = "darkblue") + 
  theme_minimal(base_size = 12.5) + 
  labs(title = "Pct. households with gas heat", 
       subtitle = "Nashville-area counties. Brackets show error margins.", 
       x = "2018-2022 ACS estimate", 
       y = "")

# Mapping data

mapdata <- filtereddata %>% 
  rename(Gas = Gas_E,
         Households = Households_E)

mapdata <- st_as_sf(mapdata)

mapviewOptions(basemaps.color.shuffle = FALSE)
mapview(mapdata, zcol = "Gas",
        layer.name = "Pct. with gas heat",
        popup = TRUE)
# Exporting data in .csv format

CSVdata <- st_drop_geometry(mapdata)
write.csv(CSVdata, "mydata.csv", row.names = FALSE)