How to center ggplot label on multiple geom

I'm working in ggplot2.

I created a point range chart but the labels are not directly centered over the points (see the figure and the code below).

How do I center each label over its respective point in this plot?

Here is the data:

DF <- structure(list(PID_3 = structure(c(1L, 2L, 1L, 2L, 1L, 2L, 1L, 
2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L), .Label = c("Democrat", 
"Republican"), class = "factor"), AME = c(0.0943872438937147, 
-0.145952449974528, 0.109719848369749, -0.154140815079052, 0.114979740556292, 
-0.161639689331601, 0.106980748082516, -0.0836619230140896, 0.186783558306622, 
-0.0980531799510613, 0.16778336838723, -0.126273012255784, 0.0906715314499834, 
-0.170941497211481, 0.106281566095293, -0.182241300474391, 0.110681329466068, 
-0.192725676443545), p = c(1.2187220809442e-10, 4.24409004476721e-14, 
3.96045837743953e-10, 2.54601555265504e-14, 0.00000411016648101134, 
0.00109656724866882, 1.17877696845627e-09, 0.0000224748623520196, 
4.87470706090971e-09, 0.829271026386558, 0.315839668276529, 0.935491536818306, 
2.63789672610624e-11, 6.36448293002342e-15, 1.28932806704258e-10, 
1.52325910151201e-15, 0.000410617778549237, 0.00228729546644436
), lower = c(0.0656477519264177, -0.183824909086534, 0.0753430178919607, 
-0.193790302191668, 0.0660502478297795, -0.258686031649377, 0.0725117653015181, 
-0.122346350111422, 0.124219139634654, -0.989278063580894, -0.160068035715313, 
-3.18406567681799, 0.064009872119084, -0.213914488023734, 0.0738773550312702, 
-0.227029311977117, 0.049282700952277, -0.316567383457244), upper = c(0.123126735861012, 
-0.108079990862523, 0.144096678847537, -0.114491327966435, 0.163909233282805, 
-0.064593347013824, 0.141449730863515, -0.0449774959167572, 0.249347976978591, 
0.793171703678772, 0.495634772489772, 2.93151965230642, 0.117333190780883, 
-0.127968506399227, 0.138685777159316, -0.137453288971664, 0.172079957979858, 
-0.068883969429847), Model = c("Base", "Base", "Control", "Control", 
"Fixed Effects", "Fixed Effects", "Base", "Base", "Control", 
"Control", "Fixed Effects", "Fixed Effects", "Base", "Base", 
"Control", "Control", "Fixed Effects", "Fixed Effects"), Group = c("Thermometer", 
"Thermometer", "Thermometer", "Thermometer", "Thermometer", "Thermometer", 
"Candidate", "Candidate", "Candidate", "Candidate", "Candidate", 
"Candidate", "Word", "Word", "Word", "Word", "Word", "Word")), class = "data.frame", row.names = c(NA, 
-18L))

Here is the plot code

ggplot(DF, aes(x = Group , y = AME, color = PID_3 , ymin = lower, ymax = upper, label = round(AME,2)))  
  facet_wrap(Model  ~ ., scale = "free_x" )  
  geom_pointrange(position=position_dodge(width=.5))  
  coord_flip()  
  geom_label()  
  geom_hline(yintercept = 0, linetype = "dashed", color = "grey")  
  guides(color="none")  
  theme_bw()  
  labs(title = "Average Marginal Effects of Affective Polarization on the Likelihood of Biden Vote",
       subtitle = "Across Party Identification and Alternative Measures of Affective Polarization",
       y = "Average Marginal Effects",
       caption= "Note: Point estimates are dots with lines indicating 95 percent confidence intervals.\nModel: Logistic Regression.\nAverage marginal effects calculated using sd")  
  theme(plot.title = element_text(hjust = 0.5),
        plot.subtitle = element_text(hjust = 0.5),
        plot.caption= element_text(hjust = 0),
        axis.title.y=element_blank())

Thank You for your help I really appreciate it!

CodePudding user response：

You can pass the position parameter in the geom_label call. Just set it to position_dodge(width= 0.4).

The code looks like this:

ggplot(DF, aes(x = Group , y = AME, color = PID_3 , ymin = lower, ymax = upper, label = round(AME,2)))  
  facet_wrap(Model  ~ ., scale = "free_x" )  
  geom_pointrange(position = position_dodge(width= 0.4))  
  coord_flip()  
  geom_label(position = position_dodge(width = 0.9))  
  geom_hline(yintercept = 0, linetype = "dashed", color = "grey")  
  guides(color="none")  
  theme_bw()  
  labs(title = "Average Marginal Effects of Affective Polarization on the Likelihood of Biden Vote",
       subtitle = "Across Party Identification and Alternative Measures of Affective Polarization",
       y = "Average Marginal Effects",
       caption= "Note: Point estimates are dots with lines indicating 95 percent confidence intervals.\nModel: Logistic Regression.\nAverage marginal effects calculated using sd")  
  theme(plot.title = element_text(hjust = 0.5),
        plot.subtitle = element_text(hjust = 0.5),
        plot.caption= element_text(hjust = 0),
        axis.title.y=element_blank())

And the output: