Genomic Intervals Masked by WindowMasker + SDust
Position: NW_019093248.1:1095401-1095425
Genomic Size: 25
View DNA for this feature (GCF_001856805.1/P_rapae_3842_assembly_v2 Oct. 2016)
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This track depicts masked sequence as determined by WindowMasker on the the 16 Oct 2016 Pieris rapae/GCF_001856805.1_P_rapae_3842_assembly_v2/GCF_001856805.1 genome assembly. The WindowMasker tool is included in the NCBI C++ toolkit. The source code for the entire toolkit is available from the NCBI FTP site.


To create this track, WindowMasker was run with the following parameters:

windowmasker -mk_counts true -input GCF_001856805.1_P_rapae_3842_assembly_v2.unmasked.fa -output wm_counts
windowmasker -ustat wm_counts -sdust true -input GCF_001856805.1_P_rapae_3842_assembly_v2.unmasked.fa -output windowmasker.intervals
perl -wpe 'if (s/^>lcl\|(.*)\n$//) { $chr = $1; } \
   if (/^(\d+) - (\d+)/) { \
   $s=$1; $e=$2+1; s/(\d+) - (\d+)/$chr\t$s\t$e/; 
   }' windowmasker.intervals > windowmasker.sdust.bed
The windowmasker.sdust.bed included masking for areas of the assembly that are gap. The file was 'cleaned' to remove those areas of masking in gaps, leaving only the sequence masking. The final result covers 95,911,044 bases in the assembly size 245,886,408 for a percent coverage of % 39.01.


Morgulis A, Gertz EM, Schäffer AA, Agarwala R. WindowMasker: window-based masker for sequenced genomes. Bioinformatics. 2006 Jan 15;22(2):134-41. PMID: 16287941