我有一个很大的值表,格式如下:
apple 1 1
apple 2 1
apple 3 1
apple 4 1
banana 25 4
banana 35 10
banana 36 10
banana 37 10
列1有许多不同的水果,每种水果的行数不同。
我想计算第1列中每种水果的第3列的累积总和,以及每行总数的累积百分比,并将它们作为新列添加。所以想要的输出是这样的:
apple 1 1 1 25.00
apple 2 1 2 50.00
apple 3 1 3 75.00
apple 4 1 4 100.00
banana 25 4 4 11.76
banana 35 10 14 41.18
banana 36 10 24 70.59
banana 37 10 34 100.00
我可以用awk实现部分目标,但我正在努力解决如何在每种新水果上重置累积总和的问题。这是我可怕的awk尝试,以获得您的观看乐趣:
#!/bin/bash
awk '{cumsum += $3; $3 = cumsum} 1' fruitfile > cumsum.tmp
total=$(awk '{total=total+$3}END{print total}' fruitfile)
awk -v total=$total '{ printf ("%st%st%st%.5fn", $1, $2, $3, ($3/total)*100)}' cumsum.tmp > cumsum.txt
rm cumsum.tmp
请您尝试以下内容,并使用所示的示例进行编写和测试。
awk '
FNR==NR{
a[$1]+=$NF
next
}
{
sum[$1]+=($NF/a[$1])*100
print $0,++b[$1],sum[$1]
}
' Input_file Input_file |
column -t
所示样本的输出如下。
apple 1 1 1 25
apple 2 1 2 50
apple 3 1 3 75
apple 4 1 4 100
banana 25 4 1 11.7647
banana 35 10 2 41.1765
banana 36 10 3 70.5882
banana 37 10 4 100
解释:添加以上详细解释。
awk ' ##Starting awk program from here.
FNR==NR{ ##Checking condition FNR==NR which will be TRUE when first time Input_file is being read.
a[$1]+=$NF ##Creating array a with index $1 and keep adding its last field value to it.
next ##next will skip all further statements from here.
}
{
sum[$1]+=($NF/a[$1])*100 ##Creating sum with index 1st field and keep adding its value to it, each value will have last field/value of a[$1] and multiplying it with 100.
print $0,++b[$1],sum[$1] ##Printing current line, array b with 1st field with increasing value of 1 and sum with index of 1st field.
}
' Input_file Input_file | ##Mentioning Input_file name here.
column -t ##Sending awk output to column command for better look.