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POggplot2-line plotting with TIME series and multi-spline
 

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  1. POggplot2-line plotting with TIME series and multi-spline
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    <p>This question's theme is simple but drives me crazy: 1. how to use <code>melt()</code> 2. how to deal with multi-lines in single one image?</p> <p>Here is my raw data:</p> <pre><code>a 4.17125 41.33875 29.674375 8.551875 5.5 b 4.101875 29.49875 50.191875 13.780625 4.90375 c 3.1575 29.621875 78.411875 25.174375 7.8012 </code></pre> <p>Q1: I've learn from this post <a href="https://stackoverflow.com/questions/3777174/plotting-two-variables-as-lines-using-ggplot2">Plotting two variables as lines using ggplot2 on the same graph</a> to know how to draw the multi-lines for multi-variables, just like this: <img src="https://i.stack.imgur.com/NNzFB.png" alt="enter image description here"></p> <p>The following codes can get the above plot. However, the x-axis is indeed time-series.</p> <pre><code>df &lt;- read.delim("~/Desktop/df.b", header=F) colnames(df)&lt;-c("sample",0,15,30,60,120) df2&lt;-melt(df,id="sample") ggplot(data = df2, aes(x=variable, y= value, group = sample, colour=sample)) + geom_line() + geom_point() </code></pre> <p>I wish it could treat <strong>0 15 30 60 120 as real number</strong> to show the time series, rather than name_characteristics. Even having tried this, I failed. </p> <pre><code>row.names(df)&lt;-df$sample df&lt;-df[,-1] df&lt;-as.matrix(df) df2 &lt;- data.frame(sample = factor(rep(row.names(df),each=5)), Time = factor(rep(c(0,15,30,60,120),3)),Values = c(df[1,],df[2,],df[3,])) ggplot(data = df2, aes(x=Time, y= Values, group = sample, colour=sample)) + geom_line() + geom_point() </code></pre> <p>Loooooooooking forward to your help. </p> <p>Q2: I've learnt that the following script can add the spline() function for single one line, what about I wish to apply spline() for <strong>all the three lines</strong> in single one image? </p> <pre><code>n &lt;-10 d &lt;- data.frame(x =1:n, y = rnorm(n)) ggplot(d,aes(x,y))+ geom_point()+geom_line(data=data.frame(spline(d, n=n*10))) </code></pre>
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