a blog by markus nolf
for the past 2+ years i’ve been working with the PSY1 Stem Psychrometer by ICT International. as with any precision instrument, calibration is a crucial step to ensure good data. […]
the fibonacci sequence (0, 0, 1, 2, 3, 5, 8, 13, …) is a very interesting series of numbers which can be found anywhere from aesthetics to nature. for example, […]
i’ve spent quite some time working on curve fitting in R (open-source software for statistical computing), recently. while most of that work went into scientific data at university, i was […]
the problem i have two sets of data for one graph, and use two different data point symbols. to make the graph more intuitive, i’d like to add the symbols […]
if you’re trying to calculate weighted means, create a weighted boxplot, or do something similar in R, and you get an error saying “sum not meaningful for factors”, it means […]
