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# Specter
Specter is an algorithm for the targeted analysis of data-independent acquisition mass spectrometry experiments based on linear deconvolution. It can analyze data from any instrument type and window acquisition scheme. The required user inputs are
Specter is an algorithm for the targeted analysis of data-independent acquisition mass spectrometry proteomics experiments. It can analyze data from any instrument type and window acquisition scheme. The required user inputs are
1. A DIA data file in (centroided) mzML format.
2. A spectral library in blib format.
3. A mass accuracy parameter, specified in parts-per-million.
The output of Specter is a .csv file describing the total ion intensities (= sum of fragment ion intensities) of each precursor in the spectral library at each retention time point of the experiment. A snippet of the typical raw output file looks like this:
The raw output of Specter is a .csv file describing the total ion intensities (= sum of fragment ion intensities) of each precursor in the spectral library at each retention time point of the experiment. A snippet of the typical raw output file looks like this:
```
Scan index Retention time (s) Precursor sequence Precursor charge Total ion intensity
10032 268.3763 ETLDASLPSDYLK 2 1,569,034
......
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