Select a numeric variable from your data set to be used in custom track construction.Note for the UCSC Genome Browser Link process: A .txt file is created that can be uploaded to the UCSC Genome Browser to display the custom track.Note for the Affymetrix Integrated Genome Browser process: A .bed file is created that can be loaded into the Affymetrix Integrated Genome Browser to display the custom track.
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The Available Variables field is populated with variables from the specified data set.
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Left-click a variable from the Available Variables field.
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Clickto add the selected variable to the Custom Track Variable field.