linux – 2d直方图制作

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概述

1.1 2.2
3.1 4.5
1.2 4.5
3.2 4.6
1.1 2.3
4.2 4.9
4.2 1.1

1.0 1.0 0
1.0 1.1 0
1.0 1.2 0
...
1.1 1.0 0
1.1 1.1 0
1.1 1.2 0
...
1.1 2.0 0
1.1 2.1 0
1.1 2.2 1
...
...

1.1 1.8
2.5 2.6
1.4 2.1
1.3 1.5
3.3 4.0
3.8 3.9
4.0 3.2
4.0 4.0

1 1 2
1 2 1
1 3 0
1 4 0

2 1 0
2 2 1
2 3 0
2 4 0

3 1 0
3 2 0
3 3 1
3 4 1

4 1 0
4 2 0
4 3 1
4 4 1

解决方法@H_675_43@

awk 'END {
  for (i = 0; ++i <= l;) {
    for (j = 0; ++j <= l;)
      printf "%d %d %d %s\n",i,j,\
        b[i,j],(j < l ? x : ORS) 
    }
  }
{
  f[NR] = $1; s[NR] = $2
  b[$1,$2]++
  }' l=4 infile

您可以试试这个(未经过全面测试)：

awk -v l=4 -v bs=0.1 'BEGIN {
  if (!bs) {   
   print "invalid bin size" > "/dev/stderr"
   exit
    }
  split(bs,t,".")
  t[2] || fL++
  m = "%." length(t[2]) "f" 
  }
{
  fk = fl ? int($1) : sprintf(m,$1)
  sk = fl ? int($2) : sprintf(m,$2)
  f[fk]; s[sk]; b[fk,sk]++
  }

END {
  if (!bs) exit 1

  for (i = 1; int(i) <= l; i += bs) {
    for (j = 1; int(j) <= l; j += bs) {
      if (fl) {
        fk = int(i); sk = int(j); m = "%d"
        }
      else {
        fk = sprintf(m,i); sk = sprintf(m,j)
        }     
      printf "%s" m OFS m OFS "%d\n",(i > 1 && fk != p ? ORS : X),fk,sk,b[fk,sk]
      p = fk        
      }
    }
  }'  infile