How to place the values of the discrete Y scale in ascending order?

Question

I want to create a histogram in ggplot but the y-axis values are getting out of order. I want to place them in ascending order on the axis. I tried to use the "reorder" function but it didn’t work.

dados(hrlinear)
ID  Home range (m)
#MB02   156.148
#MB03   247.969
#MB04   156.148
#MB05   92.400
#MB06   1022.954
#MB07   156.148
#MB08   672.731
#MB09   156.148
#MB10   594.328
#MB11   554.670
#MB12   672.731
#MB13   474.969
#MB14   0.000
#MB15   0.000
#MB16   156.506

I’m using the following path:

ggplot(hrlinear,
 aes(x=ID, y = reorder(Home.range..m., -ID)))+
 geom_bar(stat="identity") +
 labs(x = "ID dos Tags", y = "Home range linear (m)")

Answer 1

Using the data you put in the question:

ID  Home range (m)
#MB02   156.148
#MB03   247.969
#MB04   156.148
#MB05   92.400
#MB06   1022.954
#MB07   156.148
#MB08   672.731
#MB09   156.148
#MB10   594.328
#MB11   554.670
#MB12   672.731
#MB13   474.969
#MB14   0.000
#MB15   0.000
#MB16   156.506

Creating the data.frame:

v1 <- c('MB02','MB03','MB04','MB05','MB06','MB07',
        'MB08','MB09','MB10','MB11','MB12','MB13',
        'MB14','MB15','MB16')

v2 <- c(156.148, 247.969,156.148,92.400,1022.954,156.148,
        672.731,156.148,594.328,554.670,672.731,474.969,
        0.000,0.000,156.506)

dados <- data.frame(v1,v2)

Decreasing

You can use the reorder in x:

library(ggplot2)
ggplot(dados, aes(x = reorder(v1, -v2), y = v2)) +
  geom_bar(stat="identity") +
  labs(x = "ID dos Tags", y = "Home range linear (m)")

Exit:

---

Edit

Crescent

library(ggplot2)
ggplot(dados, aes(x = reorder(v1, v2), y = v2)) +
  geom_bar(stat="identity") +
  labs(x = "ID dos Tags", y = "Home range linear (m)")

Exit: