This extended practical session aims the implementation of some basic DataSHIELD functions and the interpretation of the results, this is possible to do independently having completed the DataSHIELD user tutorial.
# If they haven't been loaded yet, load all the DataSHIELD libraries. library(opal) library(dsBaseClient) # build a new dataframe by login to the table "DASIM" which is included in three cloud based Opals server <- c("study1", "study2", "study3") url <- c("http://XXXXXX:8080") table <- c("DASIM.DASIM1", "DASIM.DASIM2", "DASIM.DASIM3") logindata <- data.frame(server, url, user="administrator", password="datashield_test&", table) # login and assign the whole dataset opals <- datashield.login(logins=logindata, assign=TRUE) |
Use functions provided in DataSHIELD packages to solve the following problems:
Check the levels for the variables |
LAB_HDL
measurement.DIS_CVA
)?When you complete the questions, check your answers and code here |