diff --git a/README.md b/README.md index 4f40afb..f801c48 100644 --- a/README.md +++ b/README.md @@ -13,12 +13,6 @@ **BlackMarbleR** provides a simple and efficient way to retrieve and extract nighttime lights data from NASA's Black Marble project. [Black Marble](https://blackmarble.gsfc.nasa.gov) is a [NASA Earth Observatory](https://earthobservatory.nasa.gov) project that provides a product suite of daily, monthly and yearly global nighttime lights. This package automates the process of downloading all relevant tiles from the [NASA LAADS archive](https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/5000/VNP46A3/) to cover a region of interest, converting the raw files (in HDF5 format), to georeferenced rasters, and mosaicing rasters together when needed. -For more information on NASA Black Marble, see: - -* [Academic paper](https://www.sciencedirect.com/science/article/pii/S003442571830110X) -* [X Thread](https://twitter.com/yohaniddawela/status/1734542275630268811) -* [Webinar](https://appliedsciences.nasa.gov/get-involved/training/english/arset-introduction-nasas-black-marble-night-lights-data) - * [Installation](#installation) * [Bearer token](#token) * [Usage](#usage) @@ -33,6 +27,7 @@ For more information on NASA Black Marble, see: * [Required Arguments](#args-required) * [Optional Arguments](#args-optional) * [Argument only for `bm_extract`](#args-extract) +* [Black Marble Resources](#resources) ## Installation @@ -308,3 +303,12 @@ If `output_location_type = "file"`, the following arguments can be used: * **aggregation_fun:** A vector of functions to aggregate data (default: `"mean"`). The `exact_extract` function from the `exactextractr` package is used for aggregations; this parameter is passed to `fun` argument in `exactextractr::exact_extract`. * **add_n_pixels:** Whether to add a variable indicating the number of nighttime light pixels used to compute nighttime lights statistics (eg, number of pixels used to compute average of nighttime lights). When `TRUE`, it adds three values: `n_non_na_pixels` (the number of non-`NA` pixels used for computing nighttime light statistics); `n_pixels` (the total number of pixels); and `prop_non_na_pixels` the proportion of the two. (Default: `TRUE`). + +## Black Marble Resources + +For more information on NASA Black Marble, see: + +* [Academic paper](https://www.sciencedirect.com/science/article/pii/S003442571830110X) +* [X Thread](https://twitter.com/yohaniddawela/status/1734542275630268811) +* [Webinar](https://appliedsciences.nasa.gov/get-involved/training/english/arset-introduction-nasas-black-marble-night-lights-data) +