| 1 | (* This is a graph for Figure 2 of the USENIX jgraph abstract. It shows
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| 2 | how to extract points from a data file with awk, and how to use awk
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| 3 | to plot a function to match the data (the function that is plot here
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| 4 | is (n/k)log(n), where k is expermentally chosen to be 35000.
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| 5 |
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| 6 | There are two graphs plotted -- the first is the actual jgraph. The
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| 7 | second is a text string showing the input for the graph. Print it
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| 8 | out -- you'll see what I mean.
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| 9 |
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| 10 | *)
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| 11 |
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| 12 | newgraph
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| 13 | xaxis size 2.5
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| 14 | hash_labels font Helvetica
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| 15 | label : Number of indexed Records (N)
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| 16 | yaxis size 2.1
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| 17 | label : Running time (seconds)
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| 18 | hash_labels font Helvetica
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| 19 |
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| 20 | newcurve
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| 21 | marktype cross
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| 22 | label : Data
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| 23 | pts shell : awk '{print $5, $8}' data.txt
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| 24 |
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| 25 | newcurve
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| 26 | marktype none linetype solid
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| 27 | label : N log N / 35000
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| 28 | pts shell : awk \
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| 29 | ' $5 != 0 { \
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| 30 | print $5, $5 * log($5) / 35000}' \
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| 31 | data.txt
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| 32 |
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| 33 | copygraph
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| 34 | x_translate -3.1
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| 35 | border
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| 36 | xaxis nodraw min 0 max 1 size 2.3
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| 37 | yaxis nodraw min 0 max 1
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| 38 |
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| 39 | newstring hjl vjc x .03 y .5 font Courier fontsize 6 :
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| 40 | xaxis size 2.5 \
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| 41 | hash_labels font Helvetica\
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| 42 | label : Number of indexed Records (N)\
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| 43 | yaxis size 2.1 \
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| 44 | label : Running time (seconds)\
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| 45 | hash_labels font Helvetica\
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| 46 | \
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| 47 | newcurve \
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| 48 | marktype cross\
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| 49 | label : Data\
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| 50 | pts shell : awk '{print $5, $8}' data.txt\
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| 51 | \
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| 52 | newcurve\
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| 53 | marktype none linetype solid\
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| 54 | label : N log N / 35000\
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| 55 | pts shell : awk \\
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| 56 | ' $5 != 0 { \\
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| 57 | print $5, $5 * log($5) / 35000}' \\
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| 58 | data.txt\
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