.. _usage.shift_scale:

Moving and scaling
^^^^^^^^^^^^^^^^^^

Values are always used and displayed in scientific notation *x.yyyyez* where x is a signed single digit larger than 0.
The relative stepsize (by default 0.0001) increases or decreases is always of the same magnitude as the current value, e.g.,
1.2345e0 changes by 0.0001, but 1.2345e20 changes by 0.0001e20.
If the step results in a new order of magnitude the value will be adjusted accordingly, i.e., a step from 9.9999e1 to 10.0000e1 will become 1.0000e2.

.. note::
    This behaviour leads almost always to values different from zero when using the arrow buttons. Please enter it directly to get a value of zero.

Boxes :guilabel:`log x` and :guilabel:`log y` change the respective axis from a linear to logarithmic scaling and vice versa.

Every selected set will be recalculated according to :math:`new = scale \cdot old + offset`.