Many users contact us asking what the Quantitative value tags are. These can be found in the in-program help. Open Scaffold Q+ and go to Help > Help Contents... and search for the term
Quantitative value tags. Here they are:
Quantitative value tags
When selecting Display Options that includes the Log2 Fold Change of a quantity, three types of tags might appear in the samples table’s cells:
- Value Missing: The “numerator” of the Fold change is marked as missing and the log of ratio goes to infinity. This case might happen when a protein group has not been detected in a particular Quant Sample.
- No Values: Both the numerator and the reference are marked as missing values.
- Reference Missing: The reference of the ratio is marked as a missing value.
Another tag might appear in the following circumstances is:
- No Data: It appears for the “Log2 Fold Change” and “Fold Change Ratio” display options when the selected protein has no exclusive quantifiable peptides assigned to it.