ds.c | R Documentation |
Concatenates objects into one vector.
ds.c(x = NULL, newobj = NULL, datasources = NULL)
x |
a vector of character string providing the names of the objects to be combined. |
newobj |
a character string that provides the name for the output object
that is stored on the data servers. Default |
datasources |
a list of |
To avoid combining the character names and not the vectors on the client-side, the names are coerced into a list and the server-side function loops through that list to concatenate the list's elements into a vector.
Server function called: cDS
ds.c
returns the vector of concatenating R
objects which are written to the server-side.
DataSHIELD Development Team
## 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()
connections <- DSI::datashield.login(logins = logindata, assign = TRUE, symbol = "D")
# Create a vector with combined objects
myvect <- c("D$LAB_TSC", "D$LAB_HDL")
ds.c(x = myvect,
newobj = "new.vect",
datasources = connections[1]) #only the first Opal server is used ("study1")
# Clear the Datashield R sessions and logout
datashield.logout(connections)
## End(Not run)
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