Red Rock Software today announced the availability of Red Rock DeltaGraph 5.7.4 for Macintosh. This update of the company’s award-winning data analysis, charting and graphing software adds new features and improves the application’s performance on Intel Core Duo Apple hardware. Version 5.7.4 improves the ability to transfer DeltaGraph files between Windows and Mac versions. In addition, the 5.7.4 release has a more powerful scale-to-fit option that changes the size of a chart or graph to fill any user-defined space without making adjustments to the chart or graph itself. The R-squared calculation has been extended to better calculate the fit of some curves.