Question about the "effects" package
Dear Shige, As documented in ?plot.eff, the default is to plot on the scale of the linear predictor (the logit scale, for a logit model), which preserves the linearity of the model (which, I would think, is generally desirable), but to label the axis on the scale of the response (the probability scale). As is also documented, setting rescale.axis=FALSE will plot on the scale of the response. I hope this helps, John -------------------------------- John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox
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Behalf Of Shige Song Sent: November-13-10 10:14 AM To: r-help Help Subject: [R] Question about the "effects" package Dear All, I am using the "effects" package to produce predicted probability from a logistic regression. The graph looks really good. I soon realized that the y-axis is not spaced equally. For example, in my case, the distance between 0.02 and 0.04 is much greater than that between 0.06 and 0.08. I can guess a reason for this, but unfortunately, this distorts my story. Is there a way to change this and make the y-axis equally spaced? Many thanks. Best, Shige
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