mortcanty

jimhester

Q1. Are all the latest release versions of tidyverse and tidymodels packages already using cpp11?

All tidyverse packages that used Rcpp have been converted except for readxl and lubridate. We plan to finish converting the remainder of the packages in the next 6 months.

Q2. C++20 brings a lot of exciting features to the language, do you plan to also add a {cpp20} package too?

I agree! It is possible, but it would not be for at least 5 to 7 years from now, if ever. Compiler support and availablity often lags the language specifications significantly. However you can definitely use C++20 features with cpp11 in your package today if you like!

Q3. So writable:: is like not using const& in Rcpp?

hakimabdi

#############################################################################################
# title         : Perform a Mann-Kendall trend test of satellite image time series
# purpose       : Mann-Kendall test of monotonic trend and associated statistical significance
# author        : Abdulhakim Abdi (@HakimAbdi)
# input         : Raster stack/brick comprising a time series of observations
# output        : Raster object of monotoic trend (Kendall's tau), significance or both (i.e. brick) 
# data          : Test data: https://1drv.ms/u/s!AsHsKb_qtbkwg4ti8pJCxvUer9rMqg?e=BGcH1K
# notes         : Depending on the time series, it is might be useful prewhiten the data to remove serial correlation 
#               : prior to extracting the trend. See blog post on www.hakimabdi.com for more information. 
#############################################################################################

jscarto

// Band combinations
var natural = ['B4', 'B3', 'B2'];
var swir = ['B6', 'B5', 'B3'];
var urban = ['B7', 'B6', 'B4'];
var veg = ['B5', 'B4', 'B3'];

// Get a Landsat scene
var scene = ee.Image('LANDSAT/LC8_L1T_TOA/LC80450332015263LGN00');

// Convert the RGB bands to the HSV