Merge pull request datacarpentry#408 from carlosramre/main

Update 04-ggplot2.Rmd

_episodes_rmd/04-ggplot2.Rmd

@@ -215,7 +215,7 @@ opposed to lighter gray):
 ```{r adding-transparency, purl=FALSE}
 interviews_plotting %>%
     ggplot(aes(x = no_membrs, y = number_items)) +
-    geom_point(alpha = 0.5)
+    geom_point(alpha = 0.3)
 ```
 
 That only helped a little bit with the overplotting problem, so let's try option
@@ -244,7 +244,7 @@ between 0.1 and 0.4. Experiment with the values to see how your plot changes.
 ```{r adding-width-height, purl=FALSE}
 interviews_plotting %>%
     ggplot(aes(x = no_membrs, y = number_items)) +
-    geom_jitter(alpha = 0.5,
+    geom_jitter(alpha = 0.3,
                 width = 0.2,
                 height = 0.2)
 ```
@@ -255,7 +255,7 @@ a `color` argument inside the `geom_jitter()` function:
 ```{r adding-colors, purl=FALSE}
 interviews_plotting %>%
     ggplot(aes(x = no_membrs, y = number_items)) +
-    geom_jitter(alpha = 0.5,
+    geom_jitter(alpha = 0.3,
                 color = "blue",
                 width = 0.2,
                 height = 0.2)
@@ -278,7 +278,7 @@ of the observation:
 ```{r color-by-species, purl=FALSE}
 interviews_plotting %>%
     ggplot(aes(x = no_membrs, y = number_items)) +
-    geom_jitter(aes(color = village), alpha = 0.5, width = 0.2, height = 0.2)
+    geom_jitter(aes(color = village), alpha = 0.3, width = 0.2, height = 0.2)
 ```
 
 There appears to be a positive trend between number of household
@@ -315,7 +315,7 @@ this trend does not appear to be different by village.
 > > interviews_plotting %>%
 > >     ggplot(aes(x = village, y = rooms)) +
 > >     geom_jitter(aes(color = respondent_wall_type),
-> >		    alpha = 0.5,
+> >		    alpha = 0.3,
 > > 		    width = 0.2,
 > > 		    height = 0.2)
 > > ```
@@ -345,7 +345,7 @@ measurements and of their distribution:
 interviews_plotting %>%
     ggplot(aes(x = respondent_wall_type, y = rooms)) +
     geom_boxplot(alpha = 0) +
-    geom_jitter(alpha = 0.5,
+    geom_jitter(alpha = 0.3,
     		color = "tomato",
     		width = 0.2,
     		height = 0.2)