Chromosome sizes can be used to create chromosome label and chromosome grid tracks. They consist of a tab-separated file containing chromosome names and sizes as columns:
chr1 249250621
chr2 243199373
chr3 198022430
...Chromosome sizes can be imported into the higlass server using the --filetype chromsizes-tsv and --datatype chromsizes parameters. A coordSystem should be included to identify the assembly that these chromosomes define.
ingest_tileset --filetype chromsizes-tsv --datatype chromsizes --coordSystem hg19 chromSizes.tsv