Analyzing Sleep with Sleep Cycle App and R

Quantified Self Sleep
1

I took a look into my sleep using the Sleep Cycle App for the iPhone. After exporting the data I used R to generate some charts:

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A write up and the code can be found at my blog

2

Hi Tafka,
I like your charts you posted recently. I think I have to get familiar with that R. My data doesn’t look that well.

Thumbs up for your work.

3

What I like about using R is the reproducibility. Once you have written your scripts you can just swap the input file for a newer version and recreate the charts with just one click. Once I have more data points I will present and updated version of the chart.

4

Since you’ve already made the charts public, any chance you’d make the spreadsheet available, too?

5

Hi Tafkas, good stuff. How is “sleep quality” defined? Thanks!

6

http://www.sleepcycle.com/faq/how-is-sleep-quality-calculated/

7

Could you give me a link to the program? “R”? Thanks a lot, I couldn’t find anything via the searchfunction “program R”

8

R can be downloaded at http://www.r-project.org

You might as well check https://www.rstudio.com which is powerful and productive user interface for R.

9

The package used to generate the plots is ggplot2.
http://ggplot2.org

10

Hi Tafkas,
I like the charts.
I tried the Sleep Cycle App and was disappointed with the results. I positioned the unit at the head of my bed and calibrated IAW instructions. I use a Zeo bedside for a baseline. The Sleep Cycle app was unable to detect that I was awake, but not moving around. I think the Beddit unit may be better for non-contact sleep measurements.
I also looked at your HRV data on your blog. I just got a full nights data set using a Polar H7 with soft strap and HRV Logger app. I only had one "bad " data point in a 7 hour sleep (I figured out how to keep the strap from disconnecting when I sleep on my side).
Thank you