The UNIS course AB-202 Marine Arctic Biology practices working with data, both in form of
- using data from previous years for analysis and discussion for a poster presentation
- collecting, analysing and discussing data for a cruise report connected to a longer field work
Below, you can find a series of small tutorials covering part of those processes, including tips on how to prepare your datasheets, intro to R-studio, relevant R scripts with explanations and more to come. The tutorial is structured according to the steps you will go through to prepare your poster and many of those are relevant for the report-work as well.
You can also find the different posts through the menue on the left hand side.
1. Prepare your data
2. Using R in R-studio
3. Before you start your analysis
- 3.1 Open a script or start a new one and SAVE it
- 3.2 Set working directory (R -1- First steps: 4. Setting up a working directory)
- 3.3 Load/import your data into R-studio
- 3.4 Install/open required packages
- 3.5 Annotated example script for import and some preparations
4.Working in R
- Good practices
- Some basics
- Create objects
- Subsetting your data
- ..for other basics consult the general R-tutorial pages in bioSTATS
5. Analyse your data for the project
- Inspect & standardize/transform your data (example script)
- CTD data
- Data exploration
- Diversity indices
- Multivariate community analysis (example script)
- Cluster
- MDS
- PCR
6. Plot your data/results
- Some simple plots. Tutorials for the most common simple plots are here;e.g.
- Histograms
- Bar graphs (stacked bars can be a challenge in R, so here stacked bars in Excel might be a good alternative)
- ggplot example scripts
7. Re-run analysis and add additional one if needed
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