Given a set of points with vertical error bars, if I simply apply a transformation on them through Data > Transformations > Evaluate Expression (such as y=y/5) only the points themselves are transformed, but not the error bars.
How can I apply the same transformation on the error bars as well? I would prefer a method that transforms simultaneously both the values and the error bars.
If you double click on the source dataset, you can see the name of the columns that are used for the error bars. In the case of a XYDY dataset, the third column will be called y1. You can use that name in any expression. For instance,
y1 = y1/2
will generate a new dataset with errors reduced by a factor of 2. You can change write down expressions that change both y and y1 at once by separating them with semicolons:
y = y / 2;
y1 = y1 / 2