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  1. E

    tiff graphics device ignores case in file names

    I used the "tiff" function to save a graph to a file. I then wanted to create a second graph that was slightly different from the first one, and I indicated this by changing a single word in the file name from upper case to lower case. Specifically, I did this: tiff(file =...
  2. E

    merging two different colors with ggplot2 geom_point plot

    In cell biology, people often publish images in which one protein is labeled green and a second protein is labeled red, and then they show an image of the green protein only, then the red protein only, and then a "merge" to show where both proteins are present. The merge ends up showing mostly...