ds.rep: Creates a repetitive sequence in the server-side

In datashield/dsBaseClient: DataSHIELD Client Functions

Creates a repetitive sequence in the server-side

Description

Creates a repetitive sequence by repeating the specified scalar number, vector or list in each data source.

Usage

ds.rep(
  x1 = NULL,
  times = NA,
  length.out = NA,
  each = 1,
  source.x1 = "clientside",
  source.times = NULL,
  source.length.out = NULL,
  source.each = NULL,
  x1.includes.characters = FALSE,
  newobj = NULL,
  datasources = NULL
)

Arguments

x1	an scalar number, vector or list.
times	an integer from clientside or a serverside integer or vector.
length.out	a clientside integer or a serverside integer or vector.
each	a clientside or serverside integer.
source.x1	the source x1 argument. It can be "clientside" or "c" and serverside or "s".
source.times	see source.x1
source.length.out	see source.x1
source.each	see source.x1
x1.includes.characters	Boolean parameter which specifies if the x1 is a character.
newobj	a character string that provides the name for the output object that is stored on the data servers. Default seq.vect.
datasources	a list of DSConnection-class objects obtained after login. If the datasources argument is not specified the default set of connections will be used: see datashield.connections_default.

Details

All arguments that can denote in a clientside or a serverside (i.e. x1, times, length.out or each).

Server function called: repDS.

Value

ds.rep returns in the server-side a vector with the specified repetitive sequence. Also, two validity messages are returned to the client-side the name of newobj that has been created in each data source and if it is in a valid form.

Author(s)

DataSHIELD Development Team

Examples

## Not run: 

  ## Version 6, for version 5 see the Wiki
  # Connecting to the Opal servers

    require('DSI')
    require('DSOpal')
    require('dsBaseClient')

    builder <- DSI::newDSLoginBuilder()
    builder$append(server = "study1", 
                   url = "http://192.168.56.100:8080/", 
                   user = "administrator", password = "datashield_test&", 
                   table = "CNSIM.CNSIM1", driver = "OpalDriver")
    builder$append(server = "study2", 
                   url = "http://192.168.56.100:8080/", 
                   user = "administrator", password = "datashield_test&", 
                   table = "CNSIM.CNSIM2", driver = "OpalDriver")
    builder$append(server = "study3",
                   url = "http://192.168.56.100:8080/", 
                   user = "administrator", password = "datashield_test&", 
                   table = "CNSIM.CNSIM3", driver = "OpalDriver")
    logindata <- builder$build()

  # Log onto the remote Opal training servers
    connections <- DSI::datashield.login(logins = logindata, 
                                         assign = TRUE, 
                                         symbol = "D") 

  # Creating a repetitive sequence  
              
     ds.rep(x1 = 4,
            times = 6,
            length.out = NA,
            each = 1,
            source.x1 = "clientside",
            source.times = "c",
            source.length.out = NULL,
            source.each = "c",
            x1.includes.characters = FALSE,
            newobj = "rep.seq",
            datasources = connections)
       
     ds.rep(x1 = "lung",
            times = 6,
            length.out = 7,
            each = 1,
            source.x1 = "clientside",
            source.times = "c",
            source.length.out = "c",
            source.each = "c",
            x1.includes.characters = TRUE,
            newobj = "rep.seq",
            datasources = connections)

  # Clear the Datashield R sessions and logout  
  datashield.logout(connections) 

## End(Not run) 

datashield/dsBaseClient documentation built on May 16, 2023, 10:19 p.m.