Dr. Feng Li

Category: Default

  • How to crop an eps file?

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    by

    Feng Li
    in ,

    When you create a figure (in e.g. eps format) with R, the margins around the main context are always too wide. To save the space in the final documents, e.g. LaTeX generated pdf file. I have figured out two ways of reducing the margins.If you just want to shrink the white margin of an eps…

  • Common R traps

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    by

    Feng Li
    in ,

    I will show some R traps here.  The purpose of this page is not going to tell you how “crappy” R is. R is great indeed and also these kind of “traps” can happen in any other languages. if(a<-5) Assume you want make a condition to check if “a is smaller than negative five“, then…

  • Command line clear R console screen

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    by

    Feng Li
    in ,

    Under Linux console, you can always clear the R screen by command line cat(“\033[2J\033[H”) Note: This is not applicable to Rgui for Windows.