About

Blogistic Reflections is an attempt to share my knowledge of statistics and computing, focusing on data analysis using the R programming language. I received a Masters of Science degree in Statistics from the University of Wisconsin in 2005. Since then, I have worked as a biostatistician on both clinical trials and in observational research. I have a strong interest in weaving technologies, both old and new, together to create innovative methods of sharing data. I am an active contributor to the R-help mailing list, and have been using R daily for over five years now. I currently live in Minneapolis, MN.

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2 Responses to About

  1. Kho L Khoon says:

    Hi I am new in R. I have been trying to work on my data.

    I sorted in Excel based on hour. Then use tapply to get mean, and also made a s.err=standard error function.
    I did a plot, but the first point appears x=1, instead of x=0. It seems that the plot is reading the data in Index. Why?
    And how do i include the s.err for the points?
    How can i improve this?

    Port Hour IVdl2Date Lin_Flux
    1 0 2009/07/17 00:04 8.31
    1 0 2009/07/17 00:18 8.21
    1 0 2009/07/17 00:32 8.23
    1 0 2009/07/17 00:46 8.41
    1 0 2009/07/18 00:02 8.27
    1 0 2009/07/18 00:16 8.15
    1 0 2009/07/18 00:30 8.26
    1 0 2009/07/18 00:44 8.17
    1 0 2009/07/18 00:58 8.19
    1 0 2009/07/19 00:01 8.17
    1 0 2009/07/19 00:15 7.87
    1 0 2009/07/19 00:29 7.85
    1 0 2009/07/19 00:43 7.31
    1 0 2009/07/19 00:57 7.55
    1 1 2009/07/17 01:00 8.26
    1 1 2009/07/17 01:14 8.14
    1 1 2009/07/17 01:28 7.92
    1 1 2009/07/17 01:42 8.31
    1 1 2009/07/17 01:57 8.24
    1 1 2009/07/18 01:12 8.15
    1 1 2009/07/18 01:27 8.34
    1 1 2009/07/18 01:41 8.2
    1 1 2009/07/18 01:55 8.5
    1 1 2009/07/19 01:11 7.63
    1 1 2009/07/19 01:25 8.37
    1 1 2009/07/19 01:39 8.15
    1 1 2009/07/19 01:53 7.79
    1 2 2009/07/17 02:11 8.16
    1 2 2009/07/17 02:25 8.25
    1 2 2009/07/17 02:39 7.67
    1 2 2009/07/17 02:53 8.08
    1 2 2009/07/18 02:09 8.74
    1 2 2009/07/18 02:23 8.65
    1 2 2009/07/18 02:37 8.65
    1 2 2009/07/18 02:51 8.89
    1 2 2009/07/19 02:07 7.23
    1 2 2009/07/19 02:22 7.43
    1 2 2009/07/19 02:36 7.07
    1 2 2009/07/19 02:50 7.45

    Sorry to post this here, but hope you can help me.
    Thanks

    Khoon

  2. sagemath says:

    Hi there,
    I am trying to contact you so to ask to add your blog to:
    http://www.r-bloggers.com/

    I wrote more about it on:
    http://www.mail-archive.com/r-help@r-project.org/msg78301.html

    And my e-mail is: tal.galili@gmail.com

    Please let me know,
    Best,
    Tal

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