使用gnuplot创建直方图

我有以下数据：

ora_data01      484     484     486     490     620
ora_data02      650     651     651     671     741
ora_data03      730     768     769     773     773
ora_data04      525     525     525     541     605
ora_data05      472     547     559     635     643
ora_data06      285     377     404     494     609
ora_data07      267     353     387     453     585
ora_data08      308     434     469     526     581
local_backup    118     442     147     156     136

我想创建一个直方图，我编写了以下脚本：

set terminal png truecolor
set output "moneta_FS.png"
set grid
set style data histograms
set style fill solid 1.00 border -1
plot "moneta_fs_2014.txt" using 2:xtic(1) title "Jan-14 data growth(Gb)", "moneta_fs_2014.txt" using 5 title "Feb-14 data growth(Gb)",
'' using 6 title "Mar-14 data growth(Gb)", '' using 7 title "Apr-14 data growth(Gb)", '' using 8 title "May-14 data growth(Gb)"

并且给了我以下错误：

gnuplot> plot "moneta_fs_2014.txt" using 2:xtic(1) title "Jan-14 data growth(Gb)", "moneta_fs_2014.txt" using 5 title "Feb-14 data growth(Gb)",
                                                                                                                                               ^
         line 0: function to plot expected

gnuplot> '' using 6 title "Mar-14 data growth(Gb)", '' using 7 title "Apr-14 data growth(Gb)", '' using 8 title "May-14 data growth(Gb)"
         ^
         line 0: invalid command

---

如果这是您的实际脚本，则此处存在行格式问题：

plot "moneta_fs_2014.txt" using 2:xtic(1) title "Jan-14 data growth(Gb)", "moneta_fs_2014.txt" using 5 title "Feb-14 data growth(Gb)",
'' using 6 title "Mar-14 data growth(Gb)", '' using 7 title "Apr-14 data growth(Gb)", '' using 8 title "May-14 data growth(Gb)"

plot命令的第一行以回车结束，回车是命令分隔符，因此GNUPlot不知道如何处理第二行。您可以（a）将这些命令合并为一行，或（b）使用反斜杠（

\

）将命令分散到多行：

plot "moneta_fs_2014.txt" using 2:xtic(1) title "Jan-14 data growth(Gb)", \
    "moneta_fs_2014.txt" using 5 title "Feb-14 data growth(Gb)", \
    '' using 6 title "Mar-14 data growth(Gb)", \
    '' using 7 title "Apr-14 data growth(Gb)", \
    '' using 8 title "May-14 data growth(Gb)"

我在本地运行了这个，它似乎工作得很好