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spectrum-generator
Advanced tools
Generates a spectrum from discrete peaks. The shape of the peaks can be customised.
In order to increase the speed a shape
is first generated and then the peaks in the final
spectrum are resulting from sampling the shape
. A shape
will therefore be generated with
much more points (typically fwhm:1000).
$ npm i spectrum-generator
The spectrum generator takes an array of discrete peaks (value and intensity) and generates peaks with a gaussian distribution.
import { generateSpectrum } from 'spectrum-generator';
const peaks = [
[4, 10],
[20, 30],
[236, 1],
[569, 76],
];
const spectrum = generateSpectrum(peaks, {
from: 0, // default value: 0
to: 1000, // default value: 1000
nbPoints: 10001, // default value: 10001
});
Example to generate a high resolution spectrum using lorentzian peaks shape
import { generateSpectrum } from 'spectrum-generator';
const peaks = [
[1, 10],
[2, 30],
[3, 1],
[4, 76],
];
/*
Peaks can also be introduced as:
- const peaks = [{x:1,y:10},{x:2,y:30},{x:3,y:1},{x:4,y:76}]
- const peaks = {x:[1,2,3,4], y:[10,30,1,76]}
*/
const spectrum = generateSpectrum(peaks, {
nbPoints: 1001,
from: 0,
to: 10,
shape: {
kind: 'lorentzian',
options: {
fwhm: 1000,
length: 10001,
},
},
});
import { SpectrumGenerator } from 'spectrum-generator';
const generator = new SpectrumGenerator();
generator.addPeak([5, 20]);
generator.addPeak({ x: 5, y: 20 }); // we may either add an array of 2 elements or an object with x,y values
generator.addPeak([30, 56]);
generator.addPeaks([
[40, 12], // it can also be an array of objects with x,y properties
[10, 1],
]);
const spectrum = generator.getSpectrum();
generator.reset();
generator.addPeak([10, 50], { // customize peaks shape
width: 0.1,
shape: {
kind: 'lorentzian',
options: {
fwhm: 1000,
length: 10001,
},
}
});
generator.addPeak([10, 50], { // customize peaks shape
width: 0.1,
shape: {
kind: 'gaussian',
options: {
fwhm: 1000,
length: 10001,
},
}
});
const otherSpectrum = generator.getSpectrum();
FAQs
generate a spectrum from discrete peaks
The npm package spectrum-generator receives a total of 1,359 weekly downloads. As such, spectrum-generator popularity was classified as popular.
We found that spectrum-generator demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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