The Peak Explorer is intended for automatic
processing of spectra, and also any plots having strongly expressed local maxima (peaks).
The program automatically locates a position of the peak center of gravity
(Center), coordinates
X and Y of the top point of the peak ((x,y) of Top Point), calculates peak
area (Area), standard deviation (sd(Area)) of Area
(sd(Area)= )
locates left (Left Border) and right (Right Border)
boundaries of the peak and draws a linear background under the peak
(Background).
The Input Data Table and Grapher are situated in the Input Data
window.

Input Data window
The Result Data Table is situated in the Result Data window. It is possible to save both Input Data Table and Result Data Table in the text file.

Result Data window
The Input Data text file can be represented by two ways:
1). The file contains two columns of numbers. The first column - coordinate X of plot, the
second column - coordinate Y.
2). The file contains only one column of numbers - coordinate Y of plot. In this case
it is necessary to set initial value of the coordinate X and X increment.
It is possible to change the Number of Rows in the Table (1024 by default, 65536 maximum).
To start the searching peak process it is necessary to select in the menu
Plot the item Start to Peak Search. After finish of
the searching peak process the result will be represented in the Result Data window. The
linear background under peaks will be drawn by red lines. The plot options can be changed in
the menu Plot -- > Plot Options...
For more correct description peaks are automatically fitted by Gaussian function:

where p is the peak Center, A – peak Amplitude,
- parameter Sigma which
is approximately the width of the peak at half height
(more correct: =2.355 ).
The standard deviations (sd) of p, A,
, peak Area
and also left and right peak
boundaries (such as in the Result Table) are represented in the
Gaussian Parameters Table too.

Gaussian Parameters window
The Gaussian function will be drawn by green line. It is possible to print
the plot.

Print window
|