Note: the below was originally written and published in January 2019. I edited the post for clarity and added a few notes on using the Tidyverse suite of packages to do summarize data in R, but you can still find the original here. Not an R user but need an efficient way to average plot… Continue reading Averaging Plot Data in R– Updated Blog Post
Author: matcham2.0
Data Structures in R
Before I learned R, I had previously only programmed in Matlab. Matlab and R have comparable options for data types and treat objects very similarly, but R, and specifically the Tidyverse, has this whole other vocabulary for data structures. Understanding the differences between matrices, data frames, and other data structures made learning R easier for… Continue reading Data Structures in R
Making Violin Plots
Last week I posted some tips for reading violin plots, and this week I decided to play around with making some of my own! I use box plots pretty regularly, so I first tried remaking one of my own box plots as a violin plot instead. Today I'm only going to share information about making… Continue reading Making Violin Plots
Reading Violin Plots
I have been seeing more violin plots recently and wanted to share some tips for reading all the information violin plots can show. At first glance they can be confusing and hard to read, but really, all the parts of a violin plot are probably something you've seen in another graph type before. First, what… Continue reading Reading Violin Plots
Two ANOVA Tutorials
Today I am going to continue highlighting resources I found helpful when studying for my prelims (which I successfully passed!). The last post on this topic was about blocking trials, and I'm glad I reviewed blocking and randomization for my exam since it was helpful in answering two of the questions on my exam. The… Continue reading Two ANOVA Tutorials
GIS Internships
Just a quick post to share that there are a bunch of GIS internships on the State Cartographer's Office website right now. Currently listed positions include jobs in Wisconsin, Illinois, Minnesota, and Missouri, and the handful I clicked on were all paid internships (>$15/hour). You can find information here: https://www.sco.wisc.edu/jobs/internships/
SAGA Resources
Here's a secret from bloggers: we get a tally of how many times each page or post gets clicked on our sites. This year I've gotten a lot of readers clicking on my older SAGA articles, so it seems like a good time to share some of my favorite SAGA resources even though it's not… Continue reading SAGA Resources
Lab Methods for Soil Testing
I occasionally write for another blog on my advisor's website and thought some readers here may be interested in a recent post-- Lab Methods for Soil Testing. I broke down some common methods for measuring soil test phosphorous and potassium. These methods can be important when you're comparing your soil test values to the critical… Continue reading Lab Methods for Soil Testing
Blocking Field Trials and the First Law of Geography
I'm studying for my prelims this semester, which involves going back over the classes I've taken over the last 4 years, reviewing my research proposal, and just generally refreshing my memory about the topics a person with a PhD in agronomy should know. I'm focusing on traditional statistics and experimental designs this week, which reminded… Continue reading Blocking Field Trials and the First Law of Geography
Degrees-Minutes-Seconds, Decimal Degrees, and Eastings and Northings
I've worked on two different multi-state fertilizer trials this year. Typically for these types of projects, collaborators from many different labs agree to all apply the same treatments, take the same measurements, and submit data to a single person to analyze and publish. I get the weirdly satisfying (and occasionally frustrating) job of formatting the… Continue reading Degrees-Minutes-Seconds, Decimal Degrees, and Eastings and Northings
Spatially Challenged 