Simplest way to do grouped barplot

Question

I have the following dataframe    Catergory        Reason Species 1   Decline       Genuine      24 2  Improved       Genuine      16 3  Improved Misclassified      85 4   Decline Misclassified      41 5   Decline     Taxonomic       2 6  Improved     Taxonomic       7 7   Decline       Unclear      41 8  Improved       Unclear     117   I m trying to make a grouped bar chart  species as height and then 2 colours for catergory   here is my code    Reasonstats lt -read csv  bothstats csv   Reasonstats2 lt -as matrix Reasonstats  3     barplot  Reasonstats2  beside T col c  darkblue   red   ylab  number of  species  names arg Reasonstats Reason  cex names 0 8 las 2 space c 0 100   ylim c 0 120   box bty  l     Now what I want  is to not have to label the two bars twice and to group them apart  I ve tried changing the space value to all sorts of things and it doesn t seem to move the bars apart  Can anyone tell me what I m doing wrong

User · Answer

There are several ways to do plots in R  lattice is one of them  and always a reasonable solution   1 to  agstudy   If you want to do this in base graphics  you could try the following     Reasonstats  lt - read table text  Category         Reason  Species                                  Decline        Genuine       24                                 Improved        Genuine       16                                 Improved  Misclassified       85                                  Decline  Misclassified       41                                  Decline      Taxonomic        2                                 Improved      Taxonomic        7                                  Decline        Unclear       41                                 Improved        Unclear      117   header T   ReasonstatsDec  lt - Reasonstats which Reasonstats Category   Decline     ReasonstatsImp  lt - Reasonstats which Reasonstats Category   Improved     Reasonstats3    lt - cbind ReasonstatsImp  3   ReasonstatsDec  3   colnames Reasonstats3   lt - c  Improved    Decline   rownames Reasonstats3   lt - ReasonstatsImp Reason  windows     barplot t Reasonstats3   beside TRUE  ylab  number of species              cex names 0 8  las 2  ylim c 0 120   col c  darkblue   red      box bty  l       Here s what I did  I created a matrix with two columns  because your data were in columns  where the columns were the species counts for Decline and for Improved   Then I made those categories the column names   I also made the Reasons the row names   The barplot   function can operate over this matrix  but wants the data in rows rather than columns  so I fed it a transposed version of the matrix   Lastly  I deleted some of your arguments to your barplot   function call that were no longer needed   In other words  the problem was that your data weren t set up the way barplot   wants for your intended output

User · Answer

Not a barplot solution but using lattice  and barchart   library lattice  barchart Species Reason data Reasonstats groups Catergory            scales list x list rot 90 cex 0 8

User · Answer

I wrote a function wrapper called bar   for barplot   to do what you are trying to do here  since I need to do similar things frequently  The Github link to the function is here  After copying and pasting it into R  you do   bar dv   Species       factors   c Category  Reason        dataframe   Reasonstats       errbar   FALSE       ylim c 0  140     I increased the upper y-limit to accommodate the legend     The one convenience is that it will put a legend on the plot using the names of the levels in your categorical variable  e g    Decline  and  Improved    If each of your levels has multiple observations  it can also plot the error bars  which does not apply here  hence errbar FALSE

User · Answer

with ggplot2   library ggplot2  Animals  lt - read table    header TRUE  text  Category        Reason Species 1   Decline       Genuine      24 2  Improved       Genuine      16 3  Improved Misclassified      85 4   Decline Misclassified      41 5   Decline     Taxonomic       2 6  Improved     Taxonomic       7 7   Decline       Unclear      41 8  Improved       Unclear     117    ggplot Animals  aes factor Reason   Species  fill   Category        geom bar stat  identity   position    dodge        scale fill brewer palette    Set1

[r] Simplest way to do grouped barplot

Examples related to r

Examples related to bar-chart