the community site for and by developmental biologists

Displaying posts with the tag: dataviz [Clear Filter]

Visualizing data with R/ggplot2 – One more time

Posted by on June 26th, 2018

Experiments are rarely performed in isolation. Usually, several conditions are compared in parallel or sequential experiments. This experimental strategy also applies to time-dependent data, e.g. from timelapse imaging. So, naturally, after I published a ‘walk-through for plotting temporal data using R and ggplot2, I was immediately asked how to plot two (or more) sets of[…]

Visualizing data with R/ggplot2 – It’s about time

Posted by on May 31st, 2018

The visualization of temporal data by line graphs has been documented and popularized by William Playfair in the 18th century (Aigner et al, 2011; Beniger and Robyn, 1978). Today, time-dependent changes are still depicted by line graphs and ideally accompanied by a measure of uncertainty (Marx, 2013). Below, I provide a ‘walk-through’ for generating such a[…]

How to win a conference prize

Posted by on December 11th, 2017

Or, at least, produce nice posters while trying. Students on average author 1-3 papers and produce at least three times that many conference posters***. At large meetings, such as the ASCB, thousands of posters are presented each year. While presenting posters is popular, posters sessions evoke mixed feelings: they are often late in the evening,[…]

Color-blind people are your audience too!

Posted by on April 27th, 2017

Or, please stop mixing green/red Color is a key aspect of graphic design, but for many years was not relevant for scientific figures that were largely black and white. Falling prices for color print and electronic publishing changed this dramatically and scientists now frequently produce multi-colored figures. Using color functionally is not always straightforward but[…]

Leaving the bar in five steps

Posted by on March 24th, 2017

Introduction Graphs (or charts or plots) are often used for the display and summary of data. They are essential tools for the communication of results in presentations or manuscripts. One particular type of graph, the bar graph, is often used to quantitatively compare (multiple) conditions. The earliest known example of a bar graph, dates from[…]

#BarBarPlots!

Posted by on August 31st, 2016

(or: how to avoid misleading representations of statistical data)   Recently, a kickstarter project raised more than 3000€ in one month to campaign for banning the wrong usage of bar plots in scientific journals. This demonstrates two important points: a lot of the plots in scientific journals are quite misleading, and, a growing number of[…]