Normalization by Peak

Table of contents

1. Introduction
2. How to use
3. Behavior
4. Method
5. References

---

Introduction

Normalization by Peak rescales each spectrum so its maximum intensity equals 1.

How to use

To normalize your data by peak:

1. Upload data and select the spectra to be processed.
2. Navigate to the sidebar and turn on the “Normalization” toggle.
3. Select “Normalize by peak” from the drop-down menu.
4. Click “Process” to update the display.

Behavior

Normalizing by peak is good for understanding and comparing peak structure. This method rescales each data point so that the highest peak has an intensity of 1. Mathematically, the normalized intensity is calculated as follows:

\[S(x)=\frac{I(x)}{I_{\text{max}}}\]

where $I_{\text{max}}$ is the peak intensity for a given spectrum.

Method

The implementation rescales each selected spectrum by its maximum intensity:

\[I_{\text{norm}}(x)=\frac{I(x)}{\max(I)}\]

Parameter	Tunable or fixed	Implementation
Method choice	Tunable	Selected as Normalize by peak
Peak value	Fixed	Per-spectrum maximum intensity

References

1. SpectraGuru implementation, self-implemented peak normalization.

---

Back to Normalization