R 是否可以在聚合函数内执行回归?
比如说R 是否可以在聚合函数内执行回归?,r,aggregate-functions,linear-regression,lm,R,Aggregate Functions,Linear Regression,Lm,比如说 FP <- data.frame(A = 1:9, B = 11:19, C = 21:29, D = 31:39 ..... N = 145:153, Date: Jan 1 to Jan 9) FP在使用/保存模型时,您可能希望使用列表: FP <- data.frame(A = 1:9, B = 11:19, C = 21:29, D = rep(1:3,3)) lapply(split(FP, FP$D), function(x) lm(B + C ~ A, da
FP <- data.frame(A = 1:9, B = 11:19, C = 21:29, D = 31:39 ..... N = 145:153, Date: Jan 1 to Jan 9)
FP在使用/保存模型时,您可能希望使用列表:
FP <- data.frame(A = 1:9, B = 11:19, C = 21:29, D = rep(1:3,3))
lapply(split(FP, FP$D), function(x) lm(B + C ~ A, data = x))
#$`1`
#
#Call:
#lm(formula = B + C ~ A, data = x)
#Coefficients:
#(Intercept) A
# 30 2
#
#$`2`
#Call:
#lm(formula = B + C ~ A, data = x)
#Coefficients:
#(Intercept) A
# 30 2
#$`3`
#Call:
#lm(formula = B + C ~ A, data = x)
#Coefficients:
#(Intercept) A
# 30 2
FP谢谢您的回答。我现在稍微修改了我的问题。即使在原始情况下(编辑前),三种情况下的系数和截距都相同,这不是很奇怪吗?