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README.Rmd
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README.Rmd
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---
output: github_document
---
<!-- README.md is generated from README.Rmd. Please edit that file -->
```{r setup, include = FALSE}
knitr::opts_chunk$set(echo = FALSE, warning = FALSE)
```
```{r attach-pkgs, message=FALSE}
# Attach packages
suppressPackageStartupMessages({
library(emoji)
library(ggplot2)
library(knitr)
library(lubridate)
})
```
```{r fetch-post-names}
# Get all the internal post paths
post_paths <-
list.files("posts", pattern = ".qmd$", full.names = TRUE, recursive = TRUE)
# Extract title and date from each post
get_post_info <- function(post_path) {
post_lines <- readLines(post_path, warn = FALSE)
title_rx <- "title:"
date_rx <- "date:"
title_i <- grep(title_rx, post_lines)[1]
date_i <- grep(date_rx, post_lines)[1]
post_title <- trimws(gsub(title_rx, "", post_lines[title_i]))
post_title <- gsub("^\'|\'$|^\"|\"$", "", post_title)
post_date <- trimws(gsub(date_rx, "", post_lines[date_i]))
data.frame(title = post_title, publish_date = ymd(post_date))
}
# Get title and date of every post
post_info <- lapply(post_paths, function(path) get_post_info(path))
posts <- do.call(rbind, post_info)
# Generate a web link to each post
posts$link <- paste0("https://www.rostrum.blog/", dirname(post_paths))
# Invert order, so latest is at the top
posts <- posts[rev(row.names(posts)), ]
```
```{r date-bin}
# A dataframe with one row per day since the blog's first post
all_dates <- data.frame(
publish_date = as_date(
ymd(min(posts$publish_date)):today()
)
)
# Left join posts to dates
post_timeline <- merge(all_dates, posts, by = "publish_date", all.x = TRUE)
# Add a 'binary' column: 1 if there was a post that day, NA if not
post_timeline$bin <- ifelse(is.na(post_timeline$title), NA_real_, 1)
date_bin_wth_dupes <- post_timeline[, c("publish_date", "bin")]
# Remove duplicates because sometimes there's more than one post per day
date_bin <- date_bin_wth_dupes[!duplicated(date_bin_wth_dupes), ]
```
```{r plot}
# Create plot object
p <- ggplot(date_bin) +
# geom_point( # marker for today's date
# aes(x = Sys.Date(), y = 1),
# shape = "|", size = 10, stroke = 1, color = "grey95"
# ) +
geom_point( # markers for publishing dates
aes(x = publish_date, y = bin),
shape = "|", size = 10, stroke = 1, color = "#1D8016", alpha = 0.7
) +
theme(
legend.position = "none",
panel.grid = element_blank(),
axis.title = element_blank(),
axis.text.x = element_text(colour = "#1D8016"),
axis.text.y = element_blank(),
axis.ticks = element_blank(),
panel.background = element_blank()
)
```
<img src="images/logo-hex.png" alt="Bright green hexagon with the blog's logo of a 16-bit insect in black." width="150" align="right">
# rostrum-blog
<!-- badges: start -->
[](https://www.rostrum.blog/)
[](https://creativecommons.org/licenses/by-nc-sa/4.0/)
[](https://app.netlify.com/sites/rostrum-blog/deploys)
<!-- badges: end -->
`r emoji("floppy_disk")` Source files for [rostrum.blog](https://www.rostrum.blog/): fun and learning with the R language.
`r emoji("hammer_and_wrench")` Built with [Quarto](https://quarto.org/) and deployed with [Netlify](https://www.netlify.com/).
`r emoji("1234")` There have been `r nrow(posts)` posts on [the blog](https://www.rostrum.blog/) between `r min(posts$publish_date)` (first) to `r max(posts$publish_date)` (latest). `r if (format(today(), "%m-%d") == format(min(posts$publish_date), "%m-%d")) emoji::emoji("balloon")`
`r emoji("date")` That's a post roughly every `r round((as.numeric(max(posts$publish_date) - min(posts$publish_date))) / nrow(posts))` days, or about `r round(((nrow(posts) / (as.numeric(max(posts$publish_date) - min(posts$publish_date)))) * 30), 1)` posts per month.
`r emoji("new")` The latest post: [`r posts$title[1]`](`r posts$link[1]`)`r ifelse(grepl("[!|?|\\.|]$", posts$link[1]), "", ".")`
`r emoji("chart_with_upwards_trend")` Posts over time:
```{r plot-out, fig.height=1, fig.width=10, fig.alt="A 2D chart where each point represents a published blog post on a Y axis of time spanning from 2018 to the present. There are some gaps, but posts have been relatively consistent over time."}
p
```
<details><summary>`r emoji("open_file_folder")` Click to expand a full list of posts</summary>
```{r posts-table}
posts_table <- posts[, "publish_date", drop = FALSE]
posts_table[["title_url"]] <-
paste0("[", posts[["title"]], "](", posts[["link"]], ")")
names(posts_table) <- c("Date", "Title")
kable(posts_table)
```
</details><div>
---
`r emoji("three_o_clock")` Last updated: `r format(Sys.time(), "%Y-%m-%d at %H:%M")`.