Access data and processing functionalities of 'openEO' compliant back-ends in R.

Incorporates functions for image preprocessing, filtering and image recognition. The package takes advantage of 'RcppArmadillo' to speed up computationally intensive functions. The histogram of oriented gradients descriptor is a modification of the 'findHOGFeatures' function of the 'SimpleCV' computer vision platform, the average_hash(), dhash() and phash() functions are based on the 'ImageHash' python library. The Gabor Feature Extraction functions are based on 'Matlab' code of the paper, "CloudID: Trustworthy cloud-based and cross-enterprise biometric identification" by M. Haghighat, S. Zonouz, M. Abdel-Mottaleb, Expert Systems with Applications, vol. 42, no. 21, pp. 7905-7916, 2015, <doi:10.1016/j.eswa.2015.06.025>. The 'SLIC' and 'SLICO' superpixel algorithms were explained in detail in (i) "SLIC Superpixels Compared to State-of-the-art Superpixel Methods", Radhakrishna Achanta, Appu Shaji, Kevin Smith, Aurelien Lucchi, Pascal Fua, and Sabine Suesstrunk, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 34, num. 11, p. 2274-2282, May 2012, <doi:10.1109/TPAMI.2012.120> and (ii) "SLIC Superpixels", Radhakrishna Achanta, Appu Shaji, Kevin Smith, Aurelien Lucchi, Pascal Fua, and Sabine Suesstrunk, EPFL Technical Report no. 149300, June 2010.

Supplemental functions and data for 'OpenIntro' resources, which 
    includes open-source textbooks and resources for introductory statistics 
    (<https://www.openintro.org/>). The package contains data sets used in our 
    open-source textbooks along with custom plotting functions for reproducing 
    book figures. Note that many functions and examples include color 
    transparency; some plotting elements may not show up properly (or at all) 
    when run in some versions of Windows operating system.

A client for the Open-Meteo API that retrieves Open-Meteo
    weather data in a tidy format. No API key is required. The API specification
    is located at <https://open-meteo.com/en/docs>.