added code to compute /days/ present or absent

diff --git a/data/track_participation.R b/data/track_participation.R
index 66ca3dbc7954808399090e991fea5fc4e066d84e..f616d213a4bd451986c1d6e249e244a2a14d448e 100644 (file)
--- a/data/track_participation.R
+++ b/data/track_participation.R
@@ -7,6 +7,8 @@ colnames(d) <- c("student.num", "discord.name")
 call.list <- do.call("rbind", lapply(list.files(".", pattern="^call_list-.*tsv$"), function (x) {read.delim(x)[,1:3]}))
 colnames(call.list) <- gsub("_", ".", colnames(call.list))
 
+call.list$day <- as.Date(call.list$timestamp)
+
 call.counts <- data.frame(table(call.list$discord.name))
 colnames(call.counts) <- c("discord.name", "num.calls")
 
@@ -17,24 +19,57 @@ d$num.calls[is.na(d$num.calls)] <- 0
       
 attendance <- unlist(lapply(list.files(".", pattern="^attendance-.*tsv$"), function (x) {d <- read.delim(x); strsplit(d[[2]], ",")}))
 
-attendance.counts <- data.frame(table(attendance))
+
+file.to.attendance.list <- function (x) {
+    tmp <- read.delim(x)
+    d.out <- data.frame(discord.name=unlist(strsplit(tmp[[2]], ",")))
+    d.out$day <- rep(as.Date(tmp[[1]][1]), nrow(d.out))
+    return(d.out)
+}
+
+attendance <- do.call("rbind",
+                      lapply(list.files(".", pattern="^attendance-.*tsv$"),
+                             file.to.attendance.list))
+
+attendance.counts <- data.frame(table(attendance$discord.name))
 colnames(attendance.counts) <- c("discord.name", "num.present")
 
-d <- merge(d, attendance.counts, all.x=TRUE, all.y=TRUE, by="discord.name"); d
+d <- merge(d, attendance.counts,
+           all.x=TRUE, all.y=TRUE,
+           by="discord.name")
+
+days.list <- lapply(unique(attendance$day), function (day) {
+    day.total <- table(call.list$day == day)[["TRUE"]]
+    lapply(d$discord.name, function (discord.name) {
+        num.present <- nrow(attendance[attendance$day == day & attendance$discord.name == discord.name,])
+        data.frame(discord.name=discord.name,
+                   days.present=(num.present/day.total))
+    })
+})
+
+days.tmp <- do.call("rbind", lapply(days.list, function (x) do.call("rbind", x)))
+
+days.tbl <- tapply(days.tmp$days.present, days.tmp$discord.name, sum)
+
+attendance.days <- data.frame(discord.name=names(days.tbl),
+                              days.present=days.tbl,
+                              days.absent=length(list.files(".", pattern="^attendance-.*tsv$"))-days.tbl)
 
+d <- merge(d, attendance.days,
+           all.x=TRUE, all.y=TRUE, by="discord.name")
+d[sort.list(d$days.absent), c("discord.name", "num.calls", "days.absent")]
 
-color.gradient <- scales::seq_gradient_pal("yellow", "magenta", "Lab")(seq(0,1,length.out=length(unique(d$num.present))))
+## make some visualizations of whose here/not here
+#######################################################
 
 png("questions_absence_histogram_combined.png", units="px", width=800, height=600)
 
 ggplot(d) +
-    aes(x=as.factor(num.calls), fill=as.factor(num.present)) +
+    aes(x=as.factor(num.calls), fill=days.absent, group=days.absent) +
     geom_bar(color="black") +
-    stat_count() +
     scale_x_discrete("Number of questions asked") +
     scale_y_continuous("Number of students") +
-    # scale_fill_brewer("Absences") +
-    scale_fill_manual("Absences", values=color.gradient) +
+    scale_fill_continuous("Days absent", low="red", high="blue")+
     theme_bw()
 
 dev.off()
@@ -42,10 +77,10 @@ dev.off()
 png("questions_absenses_boxplots.png", units="px", width=800, height=600)
 
 ggplot(data=d) +
-    aes(x=as.factor(num.calls), y=num.present) +
+    aes(x=as.factor(num.calls), y=days.absent) +
     geom_boxplot() +
     scale_x_discrete("Number of questions asked") +
-    scale_y_continuous("Number of questions present")
+    scale_y_continuous("Days absent")
 
 dev.off()