Eric Wahlsteen

4 Questions 3 Answers 0 Followers

Questions related from Eric Wahlsteen

How to align data values into a matrix?

Often I need to transform several columns of data into rows of aligned values in a matrix, for multivariate analysis. So randomly ordered values in the same sample are arranged/aligned into the...

14 March 2024 6,183 1 View

How to build a frequency matrix of alleles based on SSR markers to calculate UPGMA dendrogram?

When you got the raw data from an SSR marker survey it is presented as length (number of base pairs) of alleles. Typically, a matrix with samples in rows and allele length in columns. However, how...

18 November 2019 9,614 1 View

Who to conduct elliptic Fourier analysis with tpsDig and Morpheus et al?

I would like to conduct an elliptic Fourier analysis with Bookstein normalization based on shapes captured in tpsDig. As I understand this method rely on two (or several) landmarks and the capture...

31 October 2019 8,919 0 View

How to statistically test significance between scatter groups?

I need to statistically evaluate the dispersals (landing on the ground) of maple samaras. Dropping of samaras will result in a grouped scatter on the ground, here illustrated in the example figure...

06 March 2019 5,246 9 View