search for: q2data

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2009 Feb 14
1
glm problem
Hello, I have a weird problem here. What I want to do is that I need to draw 1000 samples from a matrix, and use glm on them. when I used this command, it runs without the problem > qdata.glm = glm(X258 ~ ., family = binomial, data = q2data[sample(dim(q2data)[1], 1000), ]) but if I drew the sample first and run glm() on that sample, it gave a warning. > qdata.sample = q2data[sample(dim(qdata)[1], 1000), ] > qdata.glm = glm(X258 ~ ., family = binomial, qdata.sample) Warning message: In glm.fit(x = X, y = Y, weights = weights, s...