| Edited | Published | Title | Subtitle | Reading Time |
|---|---|---|---|---|
| 2026-08-08 | 2026-08-08 | Contents: R examples Galleries | R code and resulting plots or results. | 1 min |
| 2026-08-08 | 2026-08-08 | Guided Tour: Statistical Plot Annotations | Labels with ‘ggplot2’, ‘ggpp’ and ‘ggpmisc’ | 1 min |
| 2026-08-08 | 2026-08-08 | Writings about | research + light + plants + R + data + plots | 4 min |
| 2026-08-08 | 2026-08-08 | Contents: Pages Section | Documentation and other Resources about R | 1 min |
| 2026-08-08 | 2026-08-08 | Contents: R Blog | Package Updates and News | 1 min |
| 2026-08-08 | 2026-08-08 | Contents: Presentations | Talks and posters | 1 min |
| 2026-08-08 | 2026-08-08 | Contents: Data Analysis and Visualization | A selection of articles and code examples | 3 min |
| 2026-08-08 | 2026-08-08 | Guided Tour: R for Photobiology | Computations and data sets | 1 min |
| 2026-08-08 | 2026-08-08 | Contents: SenPEP Blog | Sensory Ecology and Photobiology of Plants | 3 min |
| 2026-05-21 | 2026-05-07 | In-vivo fast optical measurements of leaves | Walz LSA-2050, Force-A Dualex, SPAD, and similar instruments | 24 min |
| 2026-04-12 | 2026-04-12 | R for Photobiology | Difficult Computations Made Easy | 9 min |
| 2026-01-11 | 2026-01-11 | Visit to CAAS Beijing | My first visit to China | 6 min |
| 2026-08-01 | 2025-08-19 | Digital light sensors | Miniature multichannel integrated circuits | 8 min |
| 2025-06-29 | 2025-02-16 | Animated plots of spectra | Using ‘ggspectra’ and ‘gganimate’ | 1 min |
| 2025-01-24 | 2025-01-23 | Introduction to Mixed Effects Models | Concepts and examples in R with package ‘nlme’ | 19 min |
| 2026-08-08 | 2024-07-13 | R Packages: Timeline of Updates | Packages published in CRAN that I maintain | 3 min |
| 2025-01-14 | 2024-07-10 | Multichannel LED arrays | Ready-made and custom-assembled | 11 min |
| 2026-04-23 | 2024-06-11 | Migration from Wordpress to Quarto | SenPEP blog | 1 min |
| 2024-06-08 | 2024-06-01 | Fitted-model labels in Markdown | ‘ggpmisc’ together with ‘ggtext’ | 33 min |
| 2024-05-28 | 2024-05-28 | Looking back 40 years | Research into environmental sensing and acclimation | 6 min |
| 2026-04-24 | 2024-05-16 | Is This a Polynomial? | Computing on the R langauge | 8 min |
| 2024-04-30 | 2024-04-30 | Learn R: As a Language 2ed | Published on 2024-04-26 | 1 min |
| 2024-04-22 | 2024-04-22 | NPC with ‘ggplot2’ and ‘ggpp’ | Contrasts, multiple comparisons and simple labels | 7 min |
| 2024-04-17 | 2024-04-17 | Annotating Plot Matrices | Using ‘GGally’ Together with ‘ggpmisc’ | 9 min |
| 2024-04-01 | 2024-04-01 | README learnr folder | Example files | 1 min |
| 2024-03-06 | 2024-03-06 | Plotting circular data with ‘ggplot2’ | 5 min | |
| 2024-02-10 | 2024-02-10 | Repository migrated to R-Universe | Updated installation instructions | 1 min |
| 2024-01-19 | 2024-01-13 | ‘ooacquire’: Spectral Irradiance Algorithms | Corrections for enhanced dynamic range | 55 min |
| 2023-11-30 | 2023-11-30 | Alternative approaches | Robust, quantile and major axis regression | 2 min |
| 2023-11-30 | 2023-11-27 | Linear Models |
An introduction using lm()
|
15 min |
| 2023-11-21 | 2023-11-21 | Theoretical probability distributions | Interactive applications using R package Shiny | 1 min |
| 2023-11-18 | 2023-11-18 | Flow of code execution | R language constructs for flow control | 9 min |
| 2024-04-17 | 2023-10-30 | Introduction to Data Visualization | Using R with package ‘ggplot2’ and extensions | 39 min |
| 2023-10-21 | 2023-10-21 | Design of Experiments | Principles and practice | 10 min |
| 2024-08-24 | 2023-10-21 | photobiology 0.11.x | Most significant recent changes | 2 min |
| 2023-10-28 | 2023-09-19 | R at its simplest | R vs. calculator vs. Excel | 6 min |
| 2023-10-19 | 2023-08-19 | Research as a process | Design, realization, data analysis, and communication of research | 31 min |
| 2023-10-19 | 2023-08-19 | Research as a process | Design, realization, data analysis, and communication of research | 31 min |
| 2024-04-15 | 2023-08-14 | Multiple comparisons with ‘ggpmisc’ | Letter labels and labelled bars | 18 min |
| 2024-04-22 | 2023-08-01 | Pairwise labels with ‘ggpp’ | Contrasts, multiple comparisons and simple labels | 31 min |
| 2024-08-24 | 2023-07-31 | Open Access Weather and Climate Data | Importing qne using them in R | 25 min |
| 2023-08-01 | 2023-07-30 | Timelines with ‘ggplot2’ | Timelines as data plots | 20 min |
| 2026-06-05 | 2023-06-25 | Fitted-model labels with ‘ggpmisc’ and ‘plotly’ or ‘ggiraph’ | Interactive ggplots with model equations, R2, F, P, etc. | 7 min |
| 2023-06-24 | 2023-06-24 | Fitted-model labels with ‘ggpmisc’ and ‘gganimate’ | Animated ggplots with model equations, R2, F, P, etc. | 28 min |
| 2024-08-24 | 2023-06-10 | ooacquire >= 0.4.0 | ooacquire: Acquire Data from OO Spectrometers | 4 min |
| 2025-08-06 | 2023-06-02 | Functional analysis of spectra with ‘photobiology’ and ‘fda.usc’ | From ‘photobiology’ to ‘fda.usc’ and back. | 7 min |
| 2023-11-27 | 2023-05-30 | Model fitting in R |
An introduction to lm(), glm() and nls()
|
15 min |
| 2023-11-27 | 2023-05-30 | Randomization and independent replicates | Restricted randomization in design of experiments | 10 min |
| 2023-06-11 | 2023-05-28 | photobiology 0.10.1x | Most significant recent changes | 4 min |
| 2023-07-27 | 2023-05-24 | EDA with ‘ggplot2’ | EDA = Exploratory Data Analysis | 20 min |
| 2023-05-21 | 2023-05-21 | I have started using Mastodon… | …to announce new releases of my R packages | 1 min |
| 2023-05-13 | 2023-05-11 | Plant photoreceptors | Data and calculations | 10 min |
| 2026-04-21 | 2023-05-03 | ‘ggplot2’ Basics | The Layered Grammar of Graphics | 17 min |
| 2023-05-13 | 2023-05-03 | Markdown Basics (PARTIAL DRAFT) | Text mark up vs. visual editors | 2 min |
| 2026-02-02 | 2023-04-27 | ‘ooacquire’: Spectral Irradiance Measurement |
Tutorial and Description of the UI of acq_irrad_interactive()
|
49 min |
| 2023-05-10 | 2023-04-27 | Spectral fluorescence with ‘ooacquire’ | Tools: reflectance probe and LED | 7 min |
| 2023-08-01 | 2023-04-15 | Weather data for Finland from FMI | FMI = Finnish Meteorological Institute, or Ilmatieteen laitos | 6 min |
| 2023-05-10 | 2023-04-10 | ooacquire 0.3.x | ooacquire: Acquire Data from OO Spectrometers | 8 min |
| 2025-08-12 | 2023-03-20 | OmniDriver, Java and the whims of companies | Open source alternative drivers | 6 min |
| 2024-02-10 | 2023-03-04 | R Packages | Status and downloads at R Universe | 1 min |
| 2026-04-22 | 2023-02-28 | Packages ‘ggpmisc’, ‘ggpp’ and ‘gginnards’ | Data labels, annotations and insets for ‘ggplot2’ | 18 min |
| 2023-12-12 | 2023-02-28 | Nudging + repulsion with ‘ggrepel’ and ‘ggpp’ | Directed/ordered data labels’ positions avoiding overlaps | 30 min |
| 2024-06-06 | 2023-02-27 | Fitted-model labels with ‘ggpmisc’ | Polynomials, major axis, quantile and non-linear regression lines, bands and equations | 31 min |
| 2023-03-29 | 2023-02-27 | Website migrated to Quarto | 2 min | |
| 2023-02-25 | 2023-02-25 | Data labels in bar plots with ‘ggpp’ | Nudging labels in stacked and dodged bars or columns | 9 min |
| 2023-07-16 | 2023-02-25 | Volcano and quadrant plots with ‘ggpmisc’ | Data labels, annotations and guides | 24 min |
| 2025-01-16 | 2023-02-23 | ggplot insets with package ‘ggpp’ | Plots, tables and graphical objects as ggplot insets | 26 min |
| 2023-02-20 | 2023-02-20 | A handbook of best practice in plant UV photobiology | 1 min | |
| 2023-08-07 | 2023-02-20 | Handbook on photobiological calculations with R | 2 min | |
| 2025-03-30 | 2023-02-19 | The R for Photobiology Suite | Photobiology-related computations in R | 14 min |
| 2026-04-23 | 2023-02-19 | Pedro J. Aphalo | 2 min | |
| 2023-06-29 | 2023-02-18 | R, RStudio and Quarto | Installation and updates | 6 min |
| 2023-07-20 | 2023-02-18 | Support | R Packages and Web Site | 3 min |
| 2025-08-12 | 2023-02-15 | About this Website | 3 min | |
| 2023-10-21 | 2023-02-03 | ggspectra >= 0.3.10 | 2 min | |
| 2023-01-05 | 2023-01-05 | photobiologyWavebands 0.5.1 | 3 min | |
| 2023-01-05 | 2023-01-05 | photobiology 0.10.15 | 2 min | |
| 2024-07-10 | 2022-12-30 | Are plants and plant canopies flat? | The shape of light sensors | 7 min |
| 2024-06-11 | 2022-12-23 | Visit to Universidad Austral de Chile | Research and teaching | 1 min |
| 2026-04-23 | 2022-12-17 | Geometries geom_text_s() and geom_label_s() | ggpp: Grammar Extensions to ‘ggplot2’ | 11 min |
| 2024-06-27 | 2022-12-05 | ggpp >= 0.5.0 updates | ggpp: Grammar Extensions to ‘ggplot2’ | 3 min |
| 2022-10-18 | 2022-10-18 | ooacquire 0.2.6 | 2 min | |
| 2022-10-15 | 2022-10-15 | An R marathon updating packages | 4 min | |
| 2024-04-07 | 2022-10-15 | gginnards >= 0.1.1 updates | gginnards: Explore the Innards of ‘ggplot2’ Objects | 1 min |
| 2022-10-15 | 2022-10-15 | ggspectra 0.3.9 | 2 min | |
| 2023-07-25 | 2022-10-15 | photobiologyInOut 0.4.25/0.4.26/0.4.27 | 2 min | |
| 2022-10-15 | 2022-10-15 | photobiology 0.10.14 | 1 min | |
| 2022-10-05 | 2022-10-05 | photobiology 0.10.13 | 2 min | |
| 2022-10-01 | 2022-10-01 | ooacquire 0.2.4 and 0.2.5 | 3 min | |
| 2022-09-30 | 2022-09-30 | ggpp 0.4.5 | 2 min | |
| Invalid Date | 2022-08-24 | Learn R: As a Language | News | 2 min |
| 2022-08-13 | 2022-08-13 | HTML5 compliance of R packages | 1 min | |
| 2022-08-13 | 2022-08-13 | photobiologyWavebands 0.5.0 | 1 min | |
| 2024-04-07 | 2022-08-05 | ggpmisc >= 0.5.0 updates | ggpmisc: Miscellaneous Extensions to ‘ggplot2’ | 2 min |
| 2022-07-23 | 2022-07-23 | photobiology 0.10.12 | 3 min | |
| 2022-07-10 | 2022-07-10 | photobiology 0.10.11 | 2 min | |
| 2022-06-15 | 2022-06-15 | ggpmisc 0.4.7 | 3 min | |
| 2022-05-15 | 2022-05-15 | photobiologyInOut 0.4.24 | 1 min | |
| 2022-05-14 | 2022-05-14 | photobiologyLEDs 0.5.0 | 2 min | |
| 2022-04-29 | 2022-04-29 | R 4.2.0 | 1 min | |
| 2022-04-16 | 2022-04-16 | ggspectra 0.3.8 | 3 min | |
| 2024-07-10 | 2022-01-30 | Controlled Environment Chambers | With custom-built light sources | 10 min |
| 2024-07-10 | 2022-01-30 | Instrumentation | We use in growth chambers | 2 min |
| 2025-09-17 | 2022-01-29 | LED-based light sources | Custom-assembled sources and drivers | 15 min |
| 2024-06-11 | 2021-10-20 | What is plant intelligence? and what it is not? | A very personal take | 9 min |
| 2024-07-11 | 2021-10-17 | Sensing of solar UVA by plants | How did we work out that UVR8 is a solar-UV-B plus UV-A photoreceptor? | 9 min |
| 2024-07-12 | 2021-10-17 | Cryptochromes and stomatal opening | Whole-day time course measurements made the difference | 3 min |
| 2024-07-12 | 2021-07-13 | Perception of solar UV radiation by plants | Photoreceptors and mechanisms | 2 min |
| 2020-07-12 | 2020-07-12 | Performance of package ‘photobiology’ | 2 min | |
| 2024-07-12 | 2020-04-25 | UVR8 is an UV-B and UV-A photoreceptor | How did we work out that UVR8 is a solar-UV-B plus UV-A photoreceptor? | 3 min |
| 2019-04-24 | 2019-04-24 |
Benchmarking function sun_angles()
|
8 min | |
| 2019-02-22 | 2019-02-22 | Yoctopuce modules: Spectrometer | 6 min | |
| 2019-02-21 | 2019-02-21 | Yoctopuce modules: Introduction | 2 min | |
| 2024-09-14 | 2018-08-10 | Using the Quick TUV Calculator | Importing simulated solar spectrum data into R | 8 min |
| 2024-07-12 | 2017-11-24 | Article titles in the era of the internet | Does popularity in Research Gate mean anything? | 6 min |
| 2023-02-21 | 2016-09-15 | For those interested in optical properties | 1 min |
No matching items