ds.numNA | R Documentation |
This function helps to know the number of missing values in a vector that is stored on the server-side.
ds.numNA(x = NULL, datasources = NULL)
x |
a character string specifying the name of the vector. |
datasources |
a list of |
The number of missing entries are counted and the total for each study is returned.
Server function called: numNaDS
ds.numNA
returns to the client-side the number of missing values
on a server-side vector.
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")
#Get the number of missing values on a server-side vector
ds.numNA(x = "D$LAB_TSC",
datasources = connections)
# clear the Datashield R sessions and logout
datashield.logout(connections)
## End(Not run)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.