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...at I need to tweak the colors a little.    I've got three temperature variables (characters not numeric) and I need to change from the default qplot colors to the following: Low = Blue Middle = black High = Red   Here is pseudo code of what I have currently:qplot(Run, data = TestData, breaks = hist_breaks, ,            fill = TestData$Temperature,           main = short_title) +           scale_x_continuous("Run, Radians") + scale_y_continuous("Frequency") +           scale_fill_discrete("Temperature")   Thanks for any advice and insights.     [[alternative...

Hi All, I've been having a little trouble with creating a loop that will run a a series of t.tests for inspection, Below is the code i've tried, and some checks i've looked at. I've used the get(paste()) idea as i was told previously that the use of the eval should try and be avoided. I've run a single syntax to check that my systax is correct and works without any problems