update 20230529 for preprints posted up until 20230528. Dataset (csv) will be posted separately to Figshare due to file size.

Author: bmkramer

covid19_preprints.Rmd

@@ -276,7 +276,6 @@ rm(covid_preprints_previous)
 
 #crawl SSRN to retrieve posted dates
 cr_ssrn_covid <- cr_ssrn_covid %>%
- filter(is.na(posted_date)) %>%
  # Retrieve 'real' posted dates from the SSRN website. Warning: slow
  mutate(posted_date = ymd(map_chr(identifier, getSSRNPublicationDate)),
  source = "SSRN") %>%
@@ -477,7 +476,7 @@ dc_covid <- dc_preprints_df %>%
  # Select only relevant fields with unique values
  distinct(source, identifier, identifier_type, posted_date, title, abstract)
 
-rrm(dc_preprints_df)
+rm(dc_preprints_df)
 
 ```
 

covid19_preprints.md

@@ -45,7 +45,7 @@ Deduplicate final dataset to filter out records that are sampled twice.
 
 ```r
 sample_date_until<- Sys.Date()
-#sample_data_until <- as.Date("2022-11-03")
+#sample_data_until <- as.Date("2023-04-30")
 
 posted_date_until<-floor_date(sample_date_until, "week") #set to last Sunday prior to sample date
 
@@ -341,7 +341,7 @@ purrr::map.
 ```r
 ##specify years to include
 #dc_years <- c("2020", "2021", "2022")
-dc_years<-"2022"# for iterative update, only need to use 2022
+dc_years<-c("2023")# for iterative update, only need to use 2023 from next update onwards
 
 ###include (not: replace) query for types.resourceTypeGeneral:Preprint as per DataCite metadata schema 4.4
 dc_types<- c("types.resourceType:Preprint",
@@ -704,7 +704,8 @@ metadata <- list()
 metadata$release_date<-release_date
 metadata$sample_date<-sample_date_until
 metadata$posted_date<-posted_date_until
-metadata$url<-"https://github.com/nicholasmfraser/covid19_preprints/blob/master/data/covid19_preprints.csv?raw=true"
+metadata$url_data<-"https://doi.org/10.6084/m9.figshare.22707346"
+metadata$url_repository<-"https://github.com/nicholasmfraser/covid19_preprints"
 
 # Save as json file
 metadata_json<- toJSON(metadata, pretty=TRUE, auto_unbox=TRUE)

covid19_preprints_files/figure-gfm/unnamed-chunk-20-1.png

@@ -1,7 +1,7 @@
 {
-"release_date": "2023-05-02",
-"sample_date": "2023-04-30",
-"posted_date": "2023-04-30",
+"release_date": "2023-05-29",
+"sample_date": "2023-05-29",
+"posted_date": "2023-05-28",
 "url_data": "https://doi.org/10.6084/m9.figshare.22707346",
 "url_repository": "https://github.com/nicholasmfraser/covid19_preprints"
 }