> ## Documentation Index
> Fetch the complete documentation index at: https://otakusolutions.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Year Filter

> Filter all data views by date range — from 2018 to present.

<Frame caption="The Year Filter bar — set a date range that applies to all Map, Table, and Chart views.">
  <img src="https://mintcdn.com/otakusolutions/FOF9Ash-8JM0rAsn/images/feature-year-filter.png?fit=max&auto=format&n=FOF9Ash-8JM0rAsn&q=85&s=e17b0281071fabe6974aba33adac3532" alt="Year filter controls" width="1440" height="900" data-path="images/feature-year-filter.png" />
</Frame>

## Overview

The Year Filter is a global date range control that affects all data views (Map, Table, and Chart) simultaneously. It generates ArcGIS SQL WHERE clauses that scope queries to your selected time period.

## How to Use

1. Find the **Year Filter Bar** at the top of the data panel
2. Set the **From** year using the left dropdown
3. Set the **To** year using the right dropdown
4. All data views update automatically

The default range is **2018 to the current year**.

## What It Affects

| View      | How It Filters                                        |
| --------- | ----------------------------------------------------- |
| **Map**   | Only shows data points within the selected year range |
| **Table** | Filters table records to the selected date range      |
| **Chart** | Restricts chart data to the selected time period      |

## Use Cases

<AccordionGroup>
  <Accordion title="Pre/Post Pandemic Comparison">
    Set the range to 2018-2019 to see pre-pandemic baselines, then switch to 2020-2021 to compare.
  </Accordion>

  <Accordion title="Current Year Focus">
    Set both From and To to the current year to see only recent data.
  </Accordion>

  <Accordion title="Trend Analysis">
    Use the full range (2018-present) to see long-term trends in charts.
  </Accordion>

  <Accordion title="District-Level Analysis">
    Combine the year filter with map district overlays to see how neighborhoods change over time.
  </Accordion>
</AccordionGroup>

## AI Integration

The AI assistant can set the year filter for you. For example, asking "Show me 311 requests from 2022" will automatically adjust the year range.