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Editing: histogram
/* print histogram of integer attribute */ BEGIN { int count[]; int maxd = 0; int i, d, v; char* attrname = ARGV[0]; } N{ v = (int)(aget($,attrname)); count[v]++; if (v > maxd) { maxd = v; } } END { for (i = 1; i <= maxd; i++) { d = count[i]; if (d > 0) printf ("[%d] %d\n", i, d); } }
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