我的原始数据是：-0.002024561        1.401557        1.202661        -0.7015133        -0.684164        -0.6242453        -0.5922705

然后我用下面代码画图：

data1 <- read.table(file = "mean.txt",header = FALSE,sep = "\t")

data1 <- t(data1)
data1 <- cbind(c("L-0","L-7","L-14","L-21","L-28","L-35","L-42"),data1)
data1 <- as.data.frame(data1)
x.lable <- c("L-0","L-7","L-14","L-21","L-28","L-35","L-42")
ggplot() + geom_line(data=data1, mapping=aes(x=X1, y=X2,group=1), colour="black",stat = "identity") + scale_x_discrete(limits = x.lable)


得到的图形为

纵坐标刻度不连续，这个要怎么解决？？求大神帮忙解答，