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POHow to make a barplot with data where one of the columns already contains the frequencies/counts
 

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  1. POHow to make a barplot with data where one of the columns already contains the frequencies/counts
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    <p>I'm trying to plot the number of samples that have data for for each of several traits. I actually already have a column of data containing these numbers of samples, and was simply hoping to plot it as the "frequency". As it is, I'm not quite sure where the frequency data is coming from (see code below). Please let me know whether I can clarify anything. Many thanks!:</p> <pre><code>##my data data&lt;-structure(list(V1 = structure(c(2L, 1L), .Label = c("593", "QnWeight_initial" ), class = "factor"), V2 = structure(c(2L, 1L), .Label = c("566", "Head"), class = "factor"), V3 = structure(c(2L, 1L), .Label = c("535", "V1"), class = "factor"), V4 = structure(c(2L, 1L), .Label = c("535", "V2"), class = "factor"), V5 = structure(c(2L, 1L), .Label = c("535", "V3"), class = "factor"), V6 = structure(c(2L, 1L), .Label = c("482", "Left_Leg"), class = "factor"), V7 = structure(c(2L, 1L), .Label = c("474", "Left_Antenna"), class = "factor"), V8 = structure(c(2L, 1L), .Label = c("237", "Qn_Weight_Loss"), class = "factor"), V9 = structure(c(2L, 1L ), .Label = c("230", "Days_wrkr_eclosion"), class = "factor"), V10 = structure(c(2L, 1L), .Label = c("81", "Growth_all"), class = "factor"), V11 = structure(c(2L, 1L), .Label = c("79", "Growth_1_2"), class = "factor"), V12 = structure(c(2L, 1L), .Label = c("62", "Growth_1_3"), class = "factor"), V13 = structure(c(2L, 1L), .Label = c("60", "Growth_2_3"), class = "factor"), V14 = structure(c(2L, 1L), .Label = c("51", "Right_Antenna" ), class = "factor"), V15 = structure(c(2L, 1L), .Label = c("49", "Left_Leg_Remeasure"), class = "factor"), V16 = structure(c(2L, 1L), .Label = c("49", "Right_Leg"), class = "factor"), V17 = structure(c(2L, 1L), .Label = c("47", "Head_Remeasure"), class = "factor"), V18 = structure(c(2L, 1L), .Label = c("46", "Left_Antenna_Remeasure" ), class = "factor")), .Names = c("V1", "V2", "V3", "V4", "V5", "V6", "V7", "V8", "V9", "V10", "V11", "V12", "V13", "V14", "V15", "V16", "V17", "V18"), class = "data.frame", row.names = c(NA, -2L)) dat&lt;-data.frame(fac=unlist(data[1,, drop=FALSE]), freqs=unlist(data[2,, drop=FALSE])) t&lt;-table(rep(as.character(dat[, 1]), dat[, 2])) ##the plot I'm making at the moment barplot(t, main="Sample Sizes of Various Fitness Traits", xaxt='n', xlab='', width=0.85) labels&lt;-unlist(data[1,,drop=FALSE]) text(1:18, par("usr")[3] -0.25, srt=90, adj=1,labels=labels,xpd=TRUE, cex=0.6) ##The kind of plot I'm looking to make par(las=2) # make label text perpendicular to axis par(mar=c(5,8,4,2)) # increase y-axis margin. print(mtcars$gear) counts &lt;- table(mtcars$gear) print(counts) barplot(counts, main="Car Distribution", names.arg=c("3 Gears", "4 Gears", "5   Gears"), cex.names=0.8) </code></pre>
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    1. COYour data is *very* messy. It is not clear where you are getting your numbers (given that you are not using the `Freq` column which you create in `dat`. Everything appears to be a factor. If you input your data with a header, then most of your problems should go away
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      1. POHow to make a barplot with data where one of the columns already contains the frequencies/counts
      1. USmnel
 

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