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| # | |
| # API-method.R, 29 Jul 18 | |
| # | |
| # Data from: | |
| # Large-scale, AST-based API-usage of open source Java projects | |
| # Ralf L{\"a}mmel and Ekaterina Pek and J{\"u}rgen Starek | |
| # | |
| # Example from: | |
| # Empirical Software Engineering using R | |
| # Derek M. Jones | |
| # | |
| # TAG Java API method project calls | |
| source("ESEUR_config.r") | |
| pal_col=rainbow(2) | |
| api_method=read.csv(paste0(ESEUR_dir, "sourcecode/APIMethodsToProjectSize.csv.xz"), as.is=TRUE) | |
| plot(api_method$Size, api_method$API.Methods, log="xy", col=pal_col[2], | |
| xlab="Project size (method calls)", ylab="API methods (distinct)\n") | |
| a_mod=glm(log(API.Methods) ~ log(Size), data=api_method) | |
| summary(a_mod) | |
| pred=predict(a_mod, type="response", se.fit=TRUE) | |
| lines(api_method$Size, exp(pred$fit), col=pal_col[1]) | |