几何平滑格式 x 轴

问：

我正在使用时间监控，我想使用 geom-smooth 来获得趋势曲线。

我执行了以下代码，但曲线没有出现。我想这是 x 轴的格式问题。

您知道如何获得具有几何平滑的趋势曲线吗？提前感谢您的帮助！我尝试获得具有几何平滑的趋势曲线，但它没有出现

在此处输入图像描述

ggplot(donnes,aes(x=Day,y=value,fill=measure))+ 
  geom_point() +
geom_smooth(method="loess", level=0.90)+
  facet_wrap(~measure,ncol=1, strip.position = "left", scales="free_y", labeller = as_labeller(c(Coelenterazine = "Coelenterazine\ncontent (ng/g)", Luciferase = "Luciferase activity\n(Mq/g.s)",LightKCl= "Luminous capabilities\nwith KCl stimulation\n(Mq/g)",LightAch="Luminous capabilities\nwith acethylcholine\n(Mq/g)")))+
  geom_vline(xintercept = 9.5, linetype="dotted", color = "black", size=1)+
  geom_vline(xintercept = 13.5, linetype="dotted", color = "black", size=1)+
  ylab(NULL) +
  labs(x="Number of days in captivity")+
  scale_x_discrete(expand = c(0,.6),limits = c("D0","D30","D60","D90","D120","D150","D180","D210","D240","D247","D254","D261","D268","D298","D328","D358","D388","D418","D448","D478"),labels=c("D0","D30","D60","D90","D120","D150","D180","D210","D240","D247","D254","D261","D268","D298","D328","D358","D388","D418","D448","D478"))+
  labs(caption = "Evolution of coelenterazine content from August 2021 to December 2022")+
  scale_color_manual(name = NULL, values = c("green4", "red4", "grey5","grey23"))+
  scale_fill_manual(values = c("Coelenterazine"="green3","Luciferase"="red2","LightKCl"="grey17","LightAch"="gray72"),
                    name = "Measurements",
                    labels = c("Coelenterazine content","Luciferase activity","Light emission with KCl","Light emission with acethylcholine"))+
  theme_bw()+
  theme(legend.position = "none", 
        panel.border = element_blank(),
        strip.background = element_blank(),
        strip.placement = "outside",
        strip.text.x = element_blank(),
        panel.grid.major = element_blank(),
        panel.grid.minor = element_blank(),
        axis.line = element_line(size = 0.5, linetype = "solid", colour = "black"),
        axis.title.x = element_text(color = "black", size = 12,family = "Tahoma"),
        axis.text.x = element_text(color="black",size=10,family = "Tahoma",angle = -40, hjust=0.1),
        axis.text.y = element_text(color="black",size=10,family = "Tahoma"))