Cannot run weighted CATE code.

[asamiahulin]

I tried to run the example code for this package and came across an error when I tried to run the weighted CATE estimator.

n = 4000; threshold = 0
X = sample(seq(-4, 4, by = 8/41.5), n, replace = TRUE)
W = as.numeric(X >= threshold)
Y = 0.4 * W + 1 / (1 + exp(2 * X)) + 0.2 * rnorm(n)

thresh.low = -1; thresh.high = 1
W = as.numeric(thresh.low <= X & X <= thresh.high)
Y = 0.2 * (1 + X) * W + 1 / (1 + exp(2 * X)) + rnorm(n)
out.4 = optrdd(X=X, Y=Y, W=W, max.second.derivative = 0.5)
print(out.4); plot(out.4, xlim = c(-2.5, 2.5))

This produced the following error:

Error in cbind.Matrix(x, y, deparse.level = 0L) :
cannot get a slot ("p") from an object of type "double"

This code seems to only work with older versions of the Matrix package, but not for newer versions.