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need to load vcd if it was freshly installed

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This commit is contained in:
Ajinkya Kale 2015-07-07 17:36:18 -07:00
parent 28f8267563
commit 57e4f4d426
1 changed files with 4 additions and 2 deletions
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6
R-package/demo/create_sparse_matrix.R
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@ -1,8 +1,10 @@
require(xgboost)
require(Matrix)
require(data.table)
if (!require(vcd)) install.packages('vcd') #Available in Cran. Used for its dataset with categorical values.
if (!require(vcd)) {
install.packages('vcd') #Available in Cran. Used for its dataset with categorical values.
require(vcd)
}
# According to its documentation, Xgboost works only on numbers.
# Sometimes the dataset we have to work on have categorical data.
# A categorical variable is one which have a fixed number of values. By exemple, if for each observation a variable called "Colour" can have only "red", "blue" or "green" as value, it is a categorical variable.