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figure-diff_in_disc.R
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figure-diff_in_disc.R
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## figure-diff_in_disc.R -------------------------------------------------------
## Kyle Butts, CU Boulder Economics
##
##
library(tidyverse)
library(kfbmisc)
library(latex2exp)
library(patchwork)
# ---- Pre Plot ----------------------------------------------------------------
te_0 <- 0.2
x_grid <- tibble(x = seq(-1, 1))
# Y_0(0)
y_pre_0 <- function(x) { 0.05 + .02 * x + 0.08 * x^2 + 0.1 * x^3 + te_0 * (x > 0)}
(plot_y_pre <- ggplot(x_grid, aes(x = x)) +
# Cutoff
geom_vline(xintercept = 0, linetype = "dotted", colour = "grey20", size = 1) +
# Y_0(0)
geom_function(
fun = y_pre_0, colour = "#107895", xlim = c(-1, 0), linetype = "solid",
size = 1.1
) +
geom_function(
fun = y_pre_0, colour = "#107895", xlim = c(0.0001, 1), linetype = "solid",
size = 1.1
) +
annotate(
"text", x = 1.02, y = y_pre_0(1), colour = "#107895",
label = TeX(r'($Y_{t=0}(0)$)'),
hjust = 0, size = 3, parse = TRUE
) +
# RD_0
annotate(
"segment", x = 0, xend = 0, y = y_pre_0(0), yend = y_pre_0(0) + te_0,
size = 1, colour = "grey60"
) +
annotate(
"text", x = 0.05, y = y_pre_0(0)/2 + y_pre_1(0)/2,
label = TeX(r'($\tau_{t=0}$)'), colour = "grey60",
hjust = 0, size = 4, parse = TRUE
) +
# Label
ggtext::geom_textbox(
data = tibble(x = -0.95, y = 0.92, label = "Pre-treatment RD informs us of effects of other policy changes and non-treatment based-sorting"),
aes(x, y, label = label),
hjust = 0, size = 3.5, width = unit(0.9, "npc"),
fill = "white", box.color = NA,
box.padding = unit(c(4,4,4,4), "pt"), family = "fira_sans"
) +
kfbmisc::theme_kyle(base_size = 14) +
# Remove x- and y-axes
theme(
axis.text.y = element_blank(), axis.ticks.y = element_blank()
) +
labs(x = NULL, y = NULL) +
ylim(0,1) +
scale_x_continuous(breaks = c(-1,0,1), labels = c(" ", "Border Cutoff", " "), limits = c(-1, 1.2)) +
theme(
plot.margin = margin(t = 5, r = 5, b = 5, l = 5, unit = "pt")
))
# ---- Post Plot ---------------------------------------------------------------
# Y_0(0)
y_post_0 <- function(x) { 0.05 + .02 * x + 0.08 * x^2 + 0.1 * x^3 + te_0 * (x > 0)}
# Y_0(1)
y_post_1 <- function(x) { 0.55 + .05 * x + 0.05 * x^2 + 0.1 * x^3 }
x_grid <- tibble(x = seq(-1, 1))
(plot_y_post <- ggplot(x_grid, aes(x = x)) +
# Cutoff
geom_vline(xintercept = 0, linetype = "dotted", colour = "grey20", size = 1) +
# Y_1(0)
geom_function(
fun = y_post_0, colour = "#107895", xlim = c(-1, 0), linetype = "solid",
size = 1.1
) +
geom_function(
fun = y_post_0, colour = "#107895", xlim = c(0.001, 1), linetype = "dashed",
size = 1.1
) +
annotate(
"text", x = 1.02, y = y_post_0(1), colour = "#107895",
label = TeX(r'($Y_{t=1}(0)$)'),
hjust = 0, size = 3, parse = TRUE
) +
# Y_1(1)
geom_function(
fun = y_post_1, colour = "#9A2515", xlim = c(-1, 0), linetype = "dashed",
size = 1.1
) +
geom_function(
fun = y_post_1, colour = "#9A2515", xlim = c(0, 1), linetype = "solid",
size = 1.1
) +
annotate(
"text", x = 1.02, y = y_post_1(1), colour = "#9A2515",
label = TeX(r'($Y_{t=1}(1)$)'),
hjust = 0, size = 3, parse = TRUE
) +
# RD_0
annotate(
"segment", x = 0, xend = 0, y = y_post_0(0), yend = y_post_0(0) + te_0,
size = 1, color = "grey60"
) +
annotate(
"text", x = 0.05, y = y_post_0(0) + te_0/2,
label = TeX(r'($\tau_{t=0}$)'), color = "grey60",
hjust = 0, size = 4, parse = TRUE
) +
# RD_1 - RD_0
annotate(
"segment", x = 0, xend = 0, y = y_post_0(0) + te_0, yend = y_post_1(0),
size = 1
) +
annotate(
"text", x = 0.05, y = y_post_0(0) + te_0 + (y_post_1(0) - y_post_0(0) - te_0)*3/5,
label = TeX(r'($LATE = \tau_{t=1} - \tau_{t=0}$)'),
hjust = 0, size = 4, parse = TRUE
) +
# Label
ggtext::geom_textbox(
data = tibble(x = -0.95, y = 0.92, label = "Difference of post RD and pre RD is the treatment effect of interest"),
aes(x, y, label = label),
hjust = 0, size = 3.5, width = unit(0.9, "npc"),
fill = "white", box.color = NA,
box.padding = unit(c(4,4,4,4), "pt"), family = "fira_sans"
) +
kfbmisc::theme_kyle(base_size = 14) +
# Remove x- and y-axes
theme(
axis.text.y = element_blank(), axis.ticks.y = element_blank()
) +
labs(x = NULL, y = NULL) +
ylim(0,1) +
scale_x_continuous(breaks = c(-1,0,1), labels = c(" ", "Border Cutoff", " "), limits = c(-1, 1.2)) +
theme(
plot.margin = margin(t = 5, r = 5, b = 5, l = 5, unit = "pt")
))
combined <- (plot_y_pre + plot_y_post) & theme(
rect = element_rect(fill = "transparent") # all rectangles
)
kfbmisc::ggpreview(
combined, device = "pdf", width = 8, height = 3, dpi = 300
)
ggsave(
"figures/diff_in_disc.pdf", combined, width = 8, height = 3
)
# For web
ggsave(
"figures/diff_in_disc.svg", combined, width = 8, height = 3, bg = "transparent"
)