{"id":1040,"date":"2012-11-14T22:50:43","date_gmt":"2012-11-14T22:50:43","guid":{"rendered":"http:\/\/johncanning.net\/wordpress\/?p=1040"},"modified":"2016-03-11T16:41:50","modified_gmt":"2016-03-11T16:41:50","slug":"1040","status":"publish","type":"post","link":"https:\/\/johncanning.net\/wp\/?p=1040","title":{"rendered":"Using pgfplot LaTeX package for basic dotplots."},"content":{"rendered":"

Amended 11 March 2016<\/span><\/p>\n

I wanted to produce a basic dotplot using the LaTeX pgfplot package<\/a>. I looked for guidance in the extensive manual <\/a>but didn't find what I wanted (that is not to say it's not there). I managed to find a workaround, which I have shared here. The results are not perfect, but will do for now.<\/p>\n

This is the table containing my data:<\/p>\n\n\n\n\n\n\n
Subject<\/strong><\/td>\nMarks out of ten<\/strong><\/td>\nMean Average<\/strong><\/td>\nMedian average<\/strong><\/td>\n<\/tr>\n
French<\/td>\n2, 4, 5, 7, 7<\/td>\n5<\/td>\n5<\/td>\n<\/tr>\n
Religious Studies<\/td>\n0, 5, 10, 7, 3<\/td>\n5<\/td>\n5<\/td>\n<\/tr>\n
History<\/td>\n5, 5, 4, 6, 5<\/td>\n5<\/td>\n5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

I used the scatterplot as the basis for the dotplot and worked out this code.<\/p>\n

I did three of these. Here are the results. Not too bad.<\/p>\n


\n\\documentclass{article}
\n\\usepackage{pgfplots}
\n\\pgfplotsset{compat=1.9}
\n\\begin{document}
\n\\begin{figure}
\n\\centering
\n\\caption{Dotplot: French}
\n\\begin{tikzpicture}
\n\\begin{axis}[
\nxlabel={Marks out of ten},
\nylabel={},%no label for the y axis
\nyticklabels={}, %no numbers displayed on the y
\nymin=0,
\nymax=10,
\nxline,
\nxmin=0, %sets the minimum of the x axis
\nxmax=10, %sets the max of the x axis.
\n%As the test was out of ten I have set max to 10.
\n]
\n\\addplot[scatter,only marks,
\nscatter src=explicit symbolic]
\ncoordinates
\n{
\n(2,0) %the first number is the marks out of ten (the x axis).
\n% Use 0 for the y axis until the second occurrence.
\n(4,0)
\n(5,0)
\n(7,0)
\n(7,1) %the second number here is 1 because we have already used 7,0.
\n%This is because 2 people got 7 out of 10.
\n};
\n\\end{axis}
\n\\end{tikzpicture}
\n\\end{figure}
\n\\end{document}
\n<\/code><\/p>\n

\"Dotplot<\/a><\/p>\n

 <\/p>\n\n\n