This program created with R and Shiny can produce good-looking graphs of linear regressions of data points with uncertainties. The ui.R and server.R files are for a fully interactive Shiny application, and the LinearRegression.R file is a basic implementation of the method for those who have some experience with R.
The creation of this program was inspired by LinReg by Thomas A. Moore. The description that the author provides about how his program works was used to produce the R code that is the basis of this project, and this R program was designed to be a version of Thomas A. Moore's LinReg program in R with more features that would be easier to modify.