# xan top ```txt Find top k CSV rows according to some column values. Runs in O(N * log k) time, consuming only O(k) memory. Note that rows whose selected cell is empty or cannot be parsed as a number will be ignored. Usage: xan top [options] [] xan top --help dedup options: -l, --limit Number of top items to return. Cannot be < 1. [default: 10] -R, --reverse Reverse order. -g, --groupby Return top n values per group, represented by the values in given columns. -r, --rank Name of a rank column to prepend. -T, --ties Keep all rows tied for last. Will therefore consume O(k + t) memory, t being the number of ties. Common options: -h, --help Display this message -o, --output Write output to instead of stdout. -n, --no-headers When set, the first row will not be evaled as headers. -d, --delimiter The field delimiter for reading CSV data. Must be a single character. ```