ds.matrixDet | R Documentation |
Calculates the determinant of a square matrix that is written on the server-side. This operation is only possible if the number of columns and rows of the matrix are the same.
ds.matrixDet(M1 = NULL, newobj = NULL, logarithm = FALSE, datasources = NULL)
M1 |
a character string specifying the name of the matrix. |
newobj |
a character string that provides the name for the output
variable that is stored on the data servers. Default |
logarithm |
logical. If TRUE the logarithm of the modulus of the determinant is calculated. Default FALSE. |
datasources |
a list of |
Calculates the determinant of a square matrix on the server-side.
This function is similar to the native R determinant
function.
Server function called: matrixDetDS2
ds.matrixDet
returns the determinant of an existing matrix on the server-side.
The created new object is stored on the server-side.
Also, two validity messages are returned
indicating whether the matrix has been created in each data source and if so whether
it is in a valid form.
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 the matrix in the server-side
ds.rUnif(samp.size = 9,
min = -10.5,
max = 10.5,
newobj = "ss.vector.9",
seed.as.integer = 5575,
force.output.to.k.decimal.places = 0,
datasources = connections)
ds.matrix(mdata = "ss.vector.9",
from = "serverside.vector",
nrows.scalar = 9,ncols.scalar = 9,
byrow = TRUE,
newobj = "matrix",
datasources = connections)
#Calculate the determinant of the matrix
ds.matrixDet(M1 = "matrix",
newobj = "matrixDet",
logarithm = FALSE,
datasources = connections)
# clear the Datashield R sessions and logout
datashield.logout(connections)
## End(Not run)
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