Find, Download and Process MODIS Land Products Data

Allows automating the creation of time series of rasters derived from MODIS satellite land products data. It performs several typical preprocessing steps such as download, mosaicking, reprojecting and resizing data acquired on a specified time period. All processing parameters can be set using a user-friendly GUI. Users can select which layers of the original MODIS HDF files they want to process, which additional quality indicators should be extracted from aggregated MODIS quality assurance layers and, in the case of surface reflectance products, which spectral indexes should be computed from the original reflectance bands. For each output layer, outputs are saved as single-band raster files corresponding to each available acquisition date. Virtual files allowing access to the entire time series as a single file are also created. Command-line execution exploiting a previously saved processing options file is also possible, allowing users to automatically update time series related to a MODIS product whenever a new image is available. For additional documentation refer to the following article: Busetto and Ranghetti (2016) .

Create Networks of Dendrochronological Series using Pairwise Similarity

Creating dendrochronological networks based on the similarity between tree-ring series or chronologies. The package includes various functions to compare tree-ring curves building upon the 'dplR' package. The networks can be used to visualise and understand the relations between tree-ring curves. These networks are also very useful to estimate the provenance of wood as described in Visser (2021) or wood-use within a structure/context/site as described in Visser and Vorst (2022) .

Verification for Continually Updating Time Series Data

Verification of continually updating time series data where we expect new values, but want to ensure previous data remains unchanged. Data previously recorded could change for a number of reasons, such as discovery of an error in model code, a change in methodology or instrument recalibration. Monitoring data sources for these changes is not always possible. Other unnoticed changes could include a jump in time or measurement frequency, due to instrument failure or software updates. Functionality is provided that can be used to check and flag changes to previous data to prevent changes going unnoticed, as well as unexpected jumps in time.

Dealing with Multiplatform Satellite Images

Downloading, customizing, and processing time series of satellite images for a region of interest. 'rsat' functions allow a unified access to multispectral images from Landsat, MODIS and Sentinel repositories. 'rsat' also offers capabilities for customizing satellite images, such as tile mosaicking, image cropping and new variables computation. Finally, 'rsat' covers the processing, including cloud masking, compositing and gap-filling/smoothing time series of images (Militino et al., 2018 and Militino et al., 2019 ).

Fetch Sections of XML Scholarly Articles

Get chunks of XML scholarly articles without having to know how to work with XML. Custom mappers for each publisher and for each article section pull out the information you want. Works with outputs from package 'fulltext', 'xml2' package documents, and file paths to XML documents.

'NatureServe' Interface

Interface to 'NatureServe' (< https://www.natureserve.org/>). Includes methods to get data, image metadata, search taxonomic names, and make maps.

Directory of Open Access Journals Client

Client for the Directory of Open Access Journals ('DOAJ') (< https://doaj.org/>). API documentation at < https://doaj.org/api/v1/docs>. Methods included for working with all 'DOAJ' API routes: fetch article information by identifier, search for articles, fetch journal information by identifier, and search for journals.

Interface to the 'USGS' 'BISON' API

Interface to the 'USGS' 'BISON' (< https://bison.usgs.gov/>) API, a 'database' for species occurrence data. Data comes from species in the United States from participating data providers. You can get data via 'taxonomic' and location based queries. A simple function is provided to help visualize data.

Connector to 'CouchDB'

Provides an interface to the 'NoSQL' database 'CouchDB' (< http://couchdb.apache.org>). Methods are provided for managing databases within 'CouchDB', including creating/deleting/updating/transferring, and managing documents within databases. One can connect with a local 'CouchDB' instance, or a remote 'CouchDB' databases such as 'Cloudant'. Documents can be inserted directly from vectors, lists, data.frames, and 'JSON'. Targeted at 'CouchDB' v2 or greater.

Interface to the 'Orcid.org' API

Client for the 'Orcid.org' API (< https://orcid.org/>). Functions included for searching for people, searching by 'DOI', and searching by 'Orcid' 'ID'.