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    <p>You can change the vertical location of the label according to the numeric value of Visit.</p> <p>The key is:</p> <pre><code> y=(as.numeric(Patient)+0.25*as.numeric(Visit)%%3)-0.12 </code></pre> <p>This currently produces:<br> 3 different levels according to values of Visit (%%3), which you can increase or decrease<br> each level is separated by a quarter of the distance between y labels (0.25)<br> the first label is 0.12 below the horizontal line<br> the second is 0.12 above</p> <p><img src="https://i.stack.imgur.com/Ljqqb.jpg" alt="enter image description here"> <img src="https://i.stack.imgur.com/tY5kL.jpg" alt="enter image description here"></p> <pre><code>require(ggplot2) require(plyr) require(reshape) # create sample data set.seed(666) dfn &lt;- data.frame( Referral = seq(as.Date("2007-01-15"), len= 26, by="23 day"), VISIT01 = seq(as.Date("2008-06-15"), len= 24, by="15 day")[sample(30, 26)], VISIT02 = seq(as.Date("2008-12-15"), len= 24, by="15 day")[sample(30, 26)], VISIT03 = seq(as.Date("2009-01-01"), len= 24, by="15 day")[sample(30, 26)], VISIT04 = seq(as.Date("2009-03-30"), len= 24, by="60 day")[sample(30, 26)], VISIT05 = seq(as.Date("2010-11-30"), len= 24, by="6 day")[sample(30, 26)], VISIT06 = seq(as.Date("2011-01-30"), len= 24, by="6 day")[sample(30, 26)], Discharge = seq(as.Date("2012-03-30"), len= 24, by="30 day")[sample(30, 26)], Patient = factor(1:26, labels = LETTERS), openCase = rep(0:1, 100)[sample(100, 26)]) # set today's data for cases that do not have an Discharge date dfn$Discharge[ is.na(dfn$Discharge) ] &lt;- as.Date("2014-01-30") mdfn &lt;- melt(dfn, id=c('Patient', 'openCase'), variable_name = "Visit") names(mdfn)[4] &lt;- 'Year' # rename # order data in mdfn by 'Referral' in dfn mdfn$Patient &lt;- factor(mdfn$Patient,levels = (dfn$Patient[order(dfn$Referral)]),ordered = TRUE) # subset a dataset to avoid 'Discharge' for cases that are not closed mdfn2 &lt;- subset(mdfn,!(Visit=="Discharge" &amp; Year &gt; as.Date("2014-01-01"))) # the plot as it looks now ggplot(mdfn, aes(Year, Patient)) + geom_blank() + geom_line(data = mdfn[mdfn$openCase == 0,], colour = "black") + geom_line(data = mdfn[mdfn$openCase == 1,], colour = "grey") + geom_point(data = mdfn2, aes(colour = Visit), size = 4, shape = 124) + geom_text(data=mdfn2, mapping=aes(x=Year, y=(as.numeric(Patient)+0.25*as.numeric(Visit)%%3)-0.12, label=substr(Visit, 1, 7), colour=Visit), size=2, hjust=-.1, angle = 00) </code></pre>
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    1. POorganize text on geom_point using geom_text
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    1. COElegant, impressive. Now I only need to figure out what to do when three time points are near each other and to avoid that the labels are placed on the line. Thanks.
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    2. COText is no longer on line. If you need more different height levels, increase the number following %% and decrease the size of the shift (currently 0.25), which may require smaller text.
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    3. COIf this is not the actual data and this does not work with the actual data, think of providing the actual data after making it anonymous with: http://stackoverflow.com/a/10458688/742447
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