ggplot2 sorting a plot

Question

I have a data frame  that is sorted from highest to lowest  For example    x  lt - structure list variable   structure c 10L  6L  3L  4L  2L  8L   9L  5L  1L  7L    Label   c  a    b    c    d    e    f    g     h    i    j    class   c  ordered    factor     value   c 0 990683229813665   0 975155279503106  0 928571428571429  0 807453416149068  0 717391304347826   0 388198757763975  0 357142857142857  0 201863354037267  0 173913043478261   0 0496894409937888     Names   c  variable    value    row names   c 10L   6L  3L  4L  2L  8L  9L  5L  1L  7L   class    data frame    ggplot x  aes x variable y value     geom bar stat  identity       scale y continuous    label scales  percent    coord flip      Now  the data is nice and sorted  but when I plot  it comes out sorted by factor  It s annoying  how do I fix it

User · Answer

You need to make the x-factor into an ordered factor with the ordering you want  e g  x  lt - data frame  variable  letters 1 5    value  rnorm 5      example data x  lt - x with x order -value         Sorting x variable  lt - ordered x variable  levels levels x variable  unclass x variable     ggplot x  aes x variable y value     geom bar        scale y continuous    formatter  percent     coord flip     I don t know any better way to do the ordering operation   What I have there will only work if there are no duplicate levels for x variable

User · Answer

Here are a couple of ways   The first will order things based on the order seen in the data frame   x variable  lt - factor x variable  levels unique as character x variable       The second orders the levels based on another variable  value in this case    x  lt - transform x  variable reorder variable  -value

User · Answer

This seems to be what you re looking for   g  lt - ggplot x  aes reorder variable  value   value   g   geom bar     scale y continuous formatter  percent     coord flip     The reorder   function will reorder your x axis items according to the value of variable

User · Answer

I don t know why this question was reopened but here is a tidyverse option   x   gt      arrange desc value     gt     mutate variable fct reorder variable value     gt    ggplot aes variable value fill variable     geom bar stat  identity        scale y continuous    label scales  percent    coord flip

User · Answer

I ve recently been struggling with a related issue  discussed at length here  Order of legend entries in ggplot2 barplots with coord flip      As it happens  the reason I had a hard time explaining my issue clearly  involved the relation between  the order of  factors and coord flip    as seems to be the case here   I get the desired result by adding    xlim rev levels x variable    to the ggplot statement   ggplot x  aes x variable y value     geom bar      scale y continuous    formatter  percent     coord flip       xlim rev levels x variable      This reverses the order of factors as found in the original data frame in the x-axis  which will become the y-axis with coord flip    Notice that in this particular example  the variable also happen to be in alphabetical order  but specifying an arbitrary order of levels within xlim   should work in general

[r] ggplot2: sorting a plot

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