> For the complete documentation index, see [llms.txt](https://docs.geodin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geodin.com/data-analysis/data-analysis-overview.md).

# Overview

Querying, filtering, formulas, and the calculation engine - finding and deriving value from the data you collected.

## Queries

Filter and retrieve objects, measurement points, and layer descriptions by condition.

* [Creating Queries](/data-analysis/creating-queries.md) - filter objects and measurement points by conditions.
* [Parameterized Queries](/data-analysis/creating-queries/parameterized-queries.md) - queries with placeholders that prompt for values at execution time.
* [SQL and Advanced Options](/data-analysis/creating-queries/sql-and-advanced-options.md) - direct SQL entry for logic the visual builder cannot express.
* [Query Builder Reference](/data-analysis/query-builder-reference.md) - reference for the Query Builder, including the subquery table list and schema handling.
* [Conditions and Operators](/data-analysis/query-builder-reference/conditions-and-operators.md) - comparison and logical operators used to filter a result set.
* [Layer Queries](/data-analysis/layer-queries.md) - query coded layer descriptions such as soil and rock attributes.
* [Complex Layer Queries](/data-analysis/layer-queries/complex-layer-queries.md) - advanced layer-query cases building on Layer Queries.

## Formulas

Compute and store derived values from data already in the dataset.

* [Formula Basics](/data-analysis/formula-basics.md) - compute derived values with GeoDin's formula syntax.
* [Formulas in Measurement Values](/data-analysis/formulas-in-measurement-values.md) - apply formulas to measurement-value series.
* [Object Type Formulas](/data-analysis/object-type-formulas.md) - define formulas on a data type's fields.

## Calculation engine

Automated checks, geotechnical analyses, and curve-fitting applied to your data.

* [Data Checks and Validations](/data-analysis/data-checks-and-validations.md) - automated checks and rules applied at data entry.
* [Geotechnical Analyses](/data-analysis/geotechnical-analyses.md) - hydrogeochemical and grain-size analysis methods and their diagrams.
* [Regression and Curve Fitting](/data-analysis/regression-and-curve-fitting.md) - time-series and measurement-value series properties for regression and curve-fitting work.


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# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.geodin.com/data-analysis/data-analysis-overview.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.