inst/Pres/metajam.md

In NCEAS/metajam: Easily Download Data and Metadata from 'DataONE'

metajam

author: Julien Brun, Irene Steves, Mitchell Maier date: 2018-06-26 autosize: true css: styles.css

Motivation

1. Access data and associated metadata simultaneously
2. Keep data and metadata bundled together
3. Simple interface for users unfamiliar with DataONE
4. Simple output for users unfamiliar with EML/XML

Simple to Run

Just pass in: 1. a data URL 2. a path to a folder

#set inputs

data_obj <- "https://arcticdata.io/metacat/d1/mn/v2/object/urn%3Auuid%3Aae6237a1-ac1b-4282-87a5-99f1ab0d11a5"
path <- "~/Desktop/My_Data"

#download data and metadata

metajam::download_d1_data(data_obj, path)

Output Structure

Read File Into R

my_data <- metajam::read_d1_files("doi_10.18739_A2CD5M__ASDN_Bird_captures")
summary(my_data)

                   Length Class  Mode
factor_metadata      3    tbl_df list
attribute_metadata  10    tbl_df list
summary_metadata     2    tbl_df list
data               112    tbl_df list

head(my_data$summary_metadata)

# A tibble: 6 x 2
  name            value                                                   
  <chr>           <chr>                                                   
1 File_Name       ASDN_Bird_captures.csv                                  
2 Date_Downloaded 2018-06-26 14:49:50                                     
3 Data_ID         urn:uuid:ae6237a1-ac1b-4282-87a5-99f1ab0d11a5           
4 Data_URL        https://arcticdata.io/metacat/d1/mn/v2/object/urn:uuid:…
5 Metadata_ID     doi:10.18739/A2CD5M                                     
6 Metadata_URL    https://arcticdata.io/metacat/d1/mn/v2/object/doi:10.18…

NCEAS/metajam documentation built on April 23, 2024, 9:44 a.m.