Raw read counts in GMGC10.sample-abundance.tsv.xz is not integer?

[songcan chen]

Why does 'raw' column in GMGC10.sample-abundance.tsv.xz contain not-integer values? According to the explanation in the GMGC webpage (https://gmgc.embl.de/download.cgi), 'raw' column gives the number of reads mapped to the unigene, which should be an integer. Yet, this value for some unigenes is less than 1 or not integer (see the example below). Why is that?

Example: 

GMGC10.204_015_426.DMSA1 (unigene)        SAMEA1906561 (sample)    0.10801909817490765 (scaled)     0.5 (raw)     0.0 (raw_unique)     0.0 (normed10m)

[Luis Pedro Coelho]

Dear Songcan et al.,

This column (raw) includes fractional assignment of reads when there are multiply-mapped reads, using the dist1 strategy from NGLess, see

https://ngless.embl.de/Functions.html#count

So, it does not normalize by either the number of reads in the sample nor the length of reference gene, but it can still be fractional

HTH

Luis

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