Christopher Chizinski
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All (17)
fisheries (5)
quarto (2)
rstats (17)
tidycreel (5)

Blog

Illustration of a fisheries clerk standing at the shoreline and interviewing two anglers in a boat pulled close to shore, with a simple chart showing two interview paths.

How an Angler Is Interviewed Matters

Why access-point and roving interviews need different treatment
tidycreel
rstats
fisheries

An access-point interview and a roving interview may ask the same questions, but they do not represent the same part of an angler trip. Here is how that distinction carries into a tidycreel analysis.

Sep 11, 2026
Christopher Chizinski

Illustration of a creel-survey calendar with selected sampling days, a boat and field gear at a lake, and a chart representing the resulting estimate.

Why the sampling calendar belongs in the estimate

Available days, sampled days, and the population behind a creel result
tidycreel
rstats
fisheries

A creel-survey calendar is more than a fieldwork schedule. It defines the days included in the survey period, the strata used to expand observations, and the population represented by the estimate.

Sep 3, 2026
Christopher Chizinski

Illustration of a creel-survey calendar, a clerk interviewing an angler at a lake, and a chart showing an estimate with uncertainty.

What we’re working on in tidycreel right now

tidycreel
rstats
fisheries

A look at the current tidycreel work: keeping estimators aligned with the survey design, documenting how results were calculated, and catching data problems before they become reported numbers.

Sep 2, 2026
Christopher Chizinski
 

Start with the design object

How tidycreel connects a creel survey to an analysis
tidycreel
rstats
fisheries

A practical introduction to the tidycreel design object and the role of tidycreel.connect in a reproducible creel-survey workflow.

Aug 27, 2026
 

Introducing tidycreel and Modern Creel Survey Analysis in R

tidycreel
rstats
fisheries

An introduction to tidycreel, its companion book, and a new series on practical creel-survey analysis in R.

Aug 18, 2026

quarto-sciposter hex sticker showing a scientific poster with charts and a peach pushpin

quarto-sciposter: scientific posters from Quarto markdown

rstats
quarto

Introducing quarto-sciposter, a Quarto extension for producing flexible scientific conference posters with Typst.

Aug 17, 2026

rmd2qmd hex logo

rmd2qmd: migrating legacy R Markdown to Quarto

rstats
quarto
I have been spending more time moving older analysis projects, notes, and reports from R Markdown to Quarto. That work is usually straightforward until you hit the edge…
Jul 26, 2026

A Shiny Creel Scheduler

rstats
Well once again life has quickly passed me by and its been quite a while since I last posted here. I have been working at finishing up the 2014 creel year with generating…
May 8, 2015

Permutational multivariate analysis of variance using distance matrices (adonis)

rstats
The RMarkdown source to this file can be found here
Nov 24, 2014

Using geom_blank for better axis ranges in ggplot

rstats
The RMarkdown source to this file can be found here
Aug 24, 2014

Simulating angler survey data

rstats
The RMarkdown source to this file can be found here
Jul 30, 2014

Plotting smooth surfaces on NMDS plots with ggplot

rstats
The RMarkdown source to this file can be found here
Jun 30, 2014

A few of my favorite themes

rstats
The RMarkdown source to this file can be found here
Jun 10, 2014

Multiple plots in ggplot2

rstats
The RMarkdown source to this file can be found here
May 7, 2014

Plotting NMDS plots with ggplot2

rstats
The RMarkdown source to this file can be found here
Apr 13, 2014
 

Models by a factor

rstats
Recently, a friend asked a question on ways to run a single model by a grouping variable in a dataset (similar to the BY statement in SAS for those familiar with SAS). This…
Apr 8, 2014

Plotting igraph objects with ggplot2

rstats
I have been working collaborating on a project with Dustin Martin using network theory.
We have are utilizing the igraph package in R, which ultimately produces graphs of…
Apr 4, 2014
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© 2026 Christopher Chizinski

 

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