search for: ningwei

Displaying 2 results from an estimated 2 matches for "ningwei".

2007 Feb 15
2
Does rpart package have some requirements on the original data set?
...the majority of y is 1 (information in the data set is small), rpart automatically regards it as already a single class and therefore won't proceed any further. If this understanding is correct, what I should do if I still want rpart to do something on this data set? Thanks a lot! Ningwei [[alternative HTML version deleted]]
2007 May 21
1
Graphically show population density for a specific geographic area using R
...to the shapefile (.shp)? I mean how to link a population density to its corresponding zip code area? 4. Finally, how could I use intensity of colors to show the differences in the population densities? I would greatly appreciate it if someone could provide me a simple example. Thanks a lot! Ningwei [[alternative HTML version deleted]]