Scaling and Shifting

Whichever data type you load, the x-axis is always automatically determined from your simulation header data. However, it might be of interest to you to scale and shift your data to your personal needs - to determine scale factors from simulations to measurements, for example.

Normalization

You may want different types of normalization for your dose distributions. You can enable/disable this and change the type under the Graph settings section of the Settings tab in the options menu. Currently, the following options are available:

• Normalization to the maximum
• Normalization to the center axis
• Normalization to the plateau (average of the center axis +- 3 data points)

Dose scaling and shifting

These options are available to you in the Shift/rescale graph section under the Analysis tab of the options menu. These factors are applied after the normalization. You can multiply the dose with a factor, offset the dose by a constant, and shift the x-axis by a constant. You may also choose to flip the data (sometimes this is necessary, since the bin labelling of TOPASMC simulations depends of the placement of your components).