Image talk:Alexa reach measurement for wikipedia.png

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Too many data points were posted on Wikipedia:Awareness statistics for September, 2004. I took 4 fairly evenly-spaced dates to use for this chart. --Kbh3rd 21:39, 1 Oct 2004 (UTC)

[edit] The code

#!/bin/sh

TMP1="_gpdata1_$$"
TMP2="_gpdata2_$$"
trap "/bin/rm -f ${TMP1} ${TMP2} ; exit" 0
FILE1="alexareach2.dat" # make alexareach1.dat to plot line for *all* datapoints
FILE2="alexareach2.dat"


sed     's/^[   ]*//
        s/,/ /g
        s/Jan /January /
        s/Feb /February /
        s/Mar /March /
        s/Apr /April /
        s/Jun /June /
        s/Jul /July /
        s/Aug /August /
        s/Sep /September /
        s/Oct /October /
        s/Nov /November /
        s/Dec /December /
        s/[     ][       ]*/ /g
        /^[     ]*$/d' "${1:-$FILE1}"  > ${TMP1}

sed     's/^[   ]*//
        s/,/ /g
        s/Jan /January /
        s/Feb /February /
        s/Mar /March /
        s/Apr /April /
        s/Jun /June /
        s/Jul /July /
        s/Aug /August /
        s/Sep /September /
        s/Oct /October /
        s/Nov /November /
        s/Dec /December /
        s/[     ][       ]*/ /g
        /^[     ]*$/d' "${2:-$FILE2}"  > ${TMP2}

gnuplot <<_EOF_ || exit 1

#22 October 2002    9653
set timefmt '%d %B %Y'
set xdata time
set format x "%b\n%y"

set size .75,.67

set title "Alexa reach measurement for wikipedia"
set xlabel " "
set ylabel "Reach per million viewers"
set grid ytics noxtics
#set logscale y
#set yrange [*:] reverse

set terminal png color small
set output 'Alexa_reach_measurement_for_wikipedia.png'

set pointsize .5

plot '${TMP1}' using 1:4 title '' with lines \
        , '${TMP2}' using 1:4 title '' with points 3


_EOF_