Merging data from Excel in R – 15 June 2017
This demonstration covers merge two Excel files in R and a couple of steps to check the data along the way.
You can watch the recording (4 minutes 46 seconds):
or download (right click and choose the save/download link option) the recording to your computer via the link:
mergeExcelInR (.m4v format, 42 MB)
and read the parts of the script below (code available when viewing the full article)
R meeting March 21st- Plotting Demo
An 19 minute recording of a discussion around plotting in R.
You can watch the recording (18 minutes 43 seconds)
or download (right click and choose the save/download link option) the recording to your computer via the link:
march21.m4v (.m4v format, 88 MB)
and read the parts of the script below (code available when viewing the full article)
Talking about Swirl
An 18 minute 19 second recording of the discussion around using, developing, and delivering swirl modules for the R users session on the 15th of March 2017
You could also download the movie file (.m4v format, 89 Mb)
Getting Data from the Web discussion March 7 2017
An 23 minute recording of a discussion of getting data from the web from a March 7th meeting: CSVs, HTML tables via rvest, fixed width embedded in tables, JSON.
You can watch the recording (23 minutes 11 seconds)
or download (right click and choose the save/download link option) the recording to your computer via the link:
march7.m4v (.m4v format, 102.2 MB)
and read the parts of the script below (code available when viewing the full article)
R reading a csv, functions, and subsetting tutorial. Feb 28th 2017
As a service to the university, IT Training is providing R notes about reading in a csv, working with functions in R, and subsetting data. This is intended to be a resource for a hour long session. While people outside the University of Otago are welcome to use this, if staff of the university want to modify and customise these instructions, then contact david.hood@otago.ac.nz for the RMarkdown file so you can freely modify the instructions to suit you and produce HTML (suitable for learning management systems) or Word versions.
R csv tutorial in PDF form (283 K)
Importing Data Examples – 17th February 2017
An 10 minute example showing importing 3 files into R:
- a relatively easy to read csv file into R, which shows the general process and a few settings
- a “worst case” tab delimited text file with several tricky areas, which runs over some of the error messages you might see and what they mean
- using RStudio’s import option which has changed a bit in the latest version.
You can watch the recording (10 minutes 10 seconds)
or download (right click and choose the save/download link option) the recording to your computer via the link:
RImportData (.mp4 format, 117.6 MB)
and read the parts of the script below (code available when viewing the full article)
R explainer
A five minute 30 second general explainer about what R is. About 2 and a half minutes of explanation, about 3 minutes of demonstration.
or available as a downloadable file aboutR (MP4 format, 54 MB)
Coordinates and annotations in R. 20th May 2016
This demonstration covers knowing how to place extra things on graphs at particular locations.
You can watch the recording (5 minutes 4 seconds):
or download (right click and choose the save/download link option) the recording to your computer via the link:
Coordinates in R: cord.mp4 (.mp4 format, 65.2 MB)
and read the parts of the script below (code available when viewing the full article)
R publication quality graph – 31st March 2016
This demonstration covers the kinds of things you might want to adjust in a basic plot to improve the graph for publication.
You can watch the recording (18 minutes 59 seconds):
or download (right click and choose the save/download link option) the recording to your computer via the link:
PublicationGraphInR (.m4v format, 68.1 MB)
and read the parts of the script below (code available when viewing the full article)
