> For the complete documentation index, see [llms.txt](https://time-series-features.gitbook.io/hctsa-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://time-series-features.gitbook.io/hctsa-manual/installing-and-using-hctsa/calculating.md).

# Running hctsa computations

An *hctsa* analysis requires setting a library of time series, master operations and operations, and generates a `HCTSA.mat` file (using `TS_Init`), as described [here](/hctsa-manual/installing-and-using-hctsa/calculating/input_files.md). Once this is set up, computations are run using [`TS_Compute`](/hctsa-manual/installing-and-using-hctsa/calculating/running_computations.md).

These steps, as well as information on how to [inspect the results of an *hctsa* analysis](/hctsa-manual/installing-and-using-hctsa/calculating/dealing_with_errors.md) and [working with HCTSA\*.mat files](/hctsa-manual/installing-and-using-hctsa/calculating/working_with_hctsa_files.md), are provided in this chapter.


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