rcosmo
projectThe Cosmic Microwave Background (CMB) is remnant electromagnetic radiation from the epoch of recombination. It is the most ancient important source of data about the early universe and the key to unlocking the mysteries of the Big Bang and the structure of time and space. Spurred on by a wealth of satellite data, intensive investigations in the past few years have resulted in many physical and mathematical results to characterize CMB radiation. An advanced R programming toolkit is needed to help statisticians perform CMB data analytics.
rcosmo
addresses various data processing and statistical analysis needs for the present generation of CMB experiments. These needs fall into the following broad categories:
+ Importing and transforming HEALPix data in convenient CMBDataFrames
+ Geometric tools
+ Statistical tools
+ Visualisation
The current version of rcosmo
includes the following functionality:
+ Generation of a comprehensive data frame of CMB observations, which include HEALPix indices, metadata, CMB intensities and their
corresponding spherical and/or cartesian coordinates, as well as polarization data
+ Window subsetting tools for investigating circular, convex and non-convex polygonal sub-regions on the sphere
+ Fast empirical covariance and variogram estimation
+ Implementation and analysis of spherical harmonics, spherical wavelets, etc
+ Various methods for CMB map visualization, such as interactive 3D full sky maps rendered with OpenGL, Mollweide projection and HEALPix boundary plotting
+ Spherical geometry tools such as shortest distance between two points, calculate spherical angles, shortest distance between a point and a region, etc
First install the devtools package:
install.packages("devtools")
Then, if using Microsoft Windows, install the latest RTools from CRAN at this link here if it is not already installed on your device. Then use devtools to install rcosmo:
devtools::install_github("frycast/rcosmo")
If you did not install RTools and are using RStudio then you will be prompted to install RTools. After installing RTools you should run devtools::install_github("frycast/rcosmo")
again.
install.packages("devtools")
library(devtools)
find_rtools()
source("https://raw.githubusercontent.com/r-lib/remotes/master/install-github.R")$value("r-lib/remotes")
remotes::install_github("frycast/rcosmo")
'R2.02' indicates Nside 1024, at 10 arcmin resolution, with polarisation. 'R2.01' indicates Nside 2048, at 5 arcmin resolution, with intensity only. 'SMICA' indicates SMICA pipeline (others: COMMANDER, NILC, SEVEM).
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.