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# | |
# lang-year.R, 27 May 20 | |
# Data from: | |
# Online Historical Encyclopedia of Programming Languages | |
# Diarmuid J. Pigott and Bruce M. Axtens | |
# http://hopl.info | |
# | |
# Example from: | |
# Evidence-based Software Engineering: based on the publicly available data | |
# Derek M. Jones | |
# | |
# TAG programming-language_new | |
source("ESEUR_config.r") | |
ly=read.csv(paste0(ESEUR_dir, "ecosystems/lang-year.csv.xz"), as.is=TRUE) | |
plot(ly$Year, ly$Languages, type="l", col=point_col, | |
xaxs="i", yaxs="i", | |
# Post 2000 effort seems low | |
xlim=c(1949, 2000), ylim=c(0, 320), | |
xlab="Year", ylab="New languages\n") | |