DM.checkExistence: Check existence of variables in the students workspace at...
In jonathancornelissen/DM: Tools for the using the interactive www.DataMind.org learning platform
Description
Usage
Arguments
Value
Examples
View source: R/DM.checkExistence.R
Description
Functions takes character vector as an input and checks whether these variables are defined in the students workspace.
Usage
1
DM.checkExistence(variables = NULL)
Arguments
variables
Character vector
Value
It doesn't return anything in case all variables indeed exist in the students workspace, but it returns a list with FALSE as first element and a message as second element in case at least one variable doesn't exist.
Examples
1
2
3
4
existing1 <- 1
existing2 <- 2
DM.checkExistence( c("existing1","existing2") ) # Doesn't return anything
DM.checkExistence( "this.variable.doesnt.exist" ) # Returns a useful message for student
jonathancornelissen/DM documentation built on May 19, 2019, 7:27 p.m.
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Description Usage Arguments Value Examples
View source: R/DM.checkExistence.R
Description
Functions takes character vector as an input and checks whether these variables are defined in the students workspace.
Usage
1 | DM.checkExistence(variables = NULL)
|
Arguments
variables |
Character vector |
Value
It doesn't return anything in case all variables indeed exist in the students workspace, but it returns a list with FALSE as first element and a message as second element in case at least one variable doesn't exist.
Examples
1 2 3 4 | existing1 <- 1
existing2 <- 2
DM.checkExistence( c("existing1","existing2") ) # Doesn't return anything
DM.checkExistence( "this.variable.doesnt.exist" ) # Returns a useful message for student
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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