---
title: "Lfs Vh Ratio"
method: POST
path: "/api/v1/cross/lfs-spectral/vh-ratio"
tags: ["LFS Spectral Hydrocarbon"]
---

# Lfs Vh Ratio

`POST /api/v1/cross/lfs-spectral/vh-ratio`

## Request

- Base URL: `https://www.deepmapai.com`
- URL: `https://www.deepmapai.com/api/v1/cross/lfs-spectral/vh-ratio`
- Auth: none declared

Compute V/H spectral ratio with HC peak identification.

**Pricing:** Included in subscription tiers (legacy list price: GET /api/v1/billing/pricing).

## Query parameters

- `x_api_key` string, nullable

## Request body

- LFSAnalyzeRequest: Request body for LFS spectral analysis.
  - `lat` number, required: Analysis center latitude (WGS-84)
  - `lon` number, required: Analysis center longitude (WGS-84)
  - `radius_km` number: Search radius for RS stations in km

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/deepmapai/apis/deepmap-ai.md) · [All operations](https://skmtc.dev/deepmapai/apis/deepmap-ai/llms.txt) · [OpenAPI document](https://skmtc.dev/deepmapai/apis/deepmap-ai/revisions/dab995d977d0?raw)