How can I get mahalanobis distance matrix by R?

More Kai Liu's questions See All

What’s the meaning of this sentence?

Please justify the statistical analysis conducted where a paired T-test was done. What’s the meaning of this sentence? Thank you for your help.

31 December 2017 897 5 View

How can I conduct multiple comparisons when I use vegan::adonis?

#The following text are codes in R library(vegan)data(dune)dunedata(dune.env)dune.envresults

11 December 2015 1,872 10 View

How can I select several vectors into depentent list when I perform anova using R?

benzos

11 December 2015 9,095 0 View

Could you please recommend some software which can perform network meta-analysis?

network meta-analysis

10 November 2015 5,185 5 View

Posthoc test lettering in JAMOVI?

Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...

31 July 2024 3,333 4 View

How to Import Blade geometry from CAD file in ANSYS design modeler?

Hello. I have the geometry of a blade in CAD file (stp) and I want to prepare the blade for meshing with turboGrid. I must import this file into designModeler and then transfer to the...

27 July 2024 356 3 View

How can I use DFT-D3 correction ( Siesta version 5.0.1)?

Dear Siesta Users, I installed Siesta 5.0.1 and I want to use Grimme's D3 correction. According to the 5.0.1 manual, I could use a few parameters to include the D3 correction in the...

27 July 2024 5,748 0 View

Flow through curved domains?

Hi everyone, I am working on a curved domain in which a ship is situated in the middle (geometry is given below). In my understanding the general fluid flow is parallel to the x axis from inlet to...

25 July 2024 9,058 4 View

Is it true that there is a physico-statistical meaning to the constant π other than circular geometry but the iron guardians of the SE deny it?

We assume that there is a physico-statistical meaning to the constant π other than circular geometry, but the iron guardians of the Schrödinger equation deny this. The iron guardians of the...

22 July 2024 4,285 9 View

How do I access .vcf files without an R statistical package?

I am currently working on a mendelian randomization study, and I have downloaded the datasets needed from the ieu opengwas project (mrcieu.ac.uk) in .vcf format. I do not have access to an R...

19 July 2024 2,342 5 View

How to decide whether the refinement is correct or not, based on Rwp and Rexp factors by Fullprof?

One of the papers I read by Toby, where (title of the paper was "R factors in Rietveld analysis: How good is good enough?"), he tells us that to get good chi square value, you must have low Rwp,...

17 July 2024 9,668 4 View

Is there a name for this type of function?

Let n∈ℕ, where the function f:A⊆ℝ𝑛→ℝ, 𝐴 is Borel, and (A,d) is a completely seperable space. What is the name of the functions where the graph of f in any (n+1)-dimensional box of A×ℝ is...

17 July 2024 258 1 View

Why does our stiff biochemical ODE model in R produce unreasonable results (negative values, NAM) despite using solvers like lsoda, vode, and rk4)?

We have developed an ODE model comprising 25 interrelated equations with common coefficients. This biochemical model, applied in wastewater treatment, is characterized by stiffness. Utilizing the...

06 July 2024 7,077 4 View

How to reconstruct original observations using PCA?

I ran PCA on 4 variables using the prcomp library. All variables were normalized to have a mean of zero and a standard deviation of one (z-score) before the PCA. prc 1 and I performed a varimax...

26 June 2024 6,792 1 View

Andrés Pérez-Figueroa

You can get the pairwise squared generalized Mahalanobis distance between all pairs of rows in a data frame, with respect to a covariance matrix, using the D2.dist() funtion in the biotools package.

require(biotools)

distD2

Kai Liu

@ Figueroa

Thank you for your help!

Best regards

Kai

Richard John Smith

I use the Matching package, but this is for creating a matched treatment and control dataset for quasi-experimental design.