(Chromosome Region end-start+1) calculation output value is negative during Copy number alteration analysis using GAIA
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4 months ago
dyseo97 • 0

Hi all,

I'm analyzing TCGA Copy number alteration data using the GAIA package in R.

After runGAIA, I knew that there was an issue.

In general, the start position of a chromosome has to be smaller than the end position.

However, several start position numbers are larger than the end position, which means the value of the end position - start position + 1 becomes negative.

enter image description here

What is this means? And how can I solve this issue?

Thank you for your comments.

Sincerely,

Dongyoung Seo from South Korea.

GAIA CNV • 180 views
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