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Need help with importing database with text field in Regressiontree
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i have database car and i have field michenicname and location how can i use carname ?
I have tried X=[michenicname location Horsepower Weight]
load carsmall % contains Horsepower, Weight, MPG X = [Horsepower Weight]; rtree = fitrtree(X,MPG)
http://www.mathworks.co.uk/help/stats/classification-trees-and-regression-trees.html#bsw6p25 can anyone help please
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Tom Lane
le 23 Août 2014
You don't say what your data looks like and what problem you are having.
I'm guessing the michenicname variable is text and that's why you're having a problem. You can't concatenate that with numeric variables. Your best bet may be to code the unique string values as group numbers. The grp2idx function may be helpful.
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