---
author: ""
---
(schemas:coordinate_systems)=
# Coordinate systems
- [1. Coordinate systems > coordinateSystem](#autogenerated_heading_2)
- [1.1. Property `Coordinate systems > root items > name`](#items_name)
- [1.2. Property `Coordinate systems > root items > axes`](#items_axes)
- [1.2.1. Property `Coordinate systems > root items > axes > oneOf > item 0`](#items_axes_oneOf_i0)
- [1.2.2. Property `Coordinate systems > root items > axes > oneOf > item 1`](#items_axes_oneOf_i1)
- [1.2.3. Coordinate systems > root items > axes > axis](#autogenerated_heading_3)
- [1.2.3.1. Property `Coordinate systems > root items > axes > axes items > name`](#items_axes_items_name)
- [1.2.3.2. Property `Coordinate systems > root items > axes > axes items > longName`](#items_axes_items_longName)
- [1.2.3.3. Property `Coordinate systems > root items > axes > axes items > type`](#items_axes_items_type)
- [1.2.3.4. Property `Coordinate systems > root items > axes > axes items > discrete`](#items_axes_items_discrete)
- [1.2.3.5. Property `Coordinate systems > root items > axes > axes items > unit`](#items_axes_items_unit)
**Title:** Coordinate systems
| | |
| ------------ | ------- |
| **Type** | `array` |
| **Required** | No |
**Description:** OME-Zarr coordinate system.
| | Array restrictions |
| -------------------- | ------------------ |
| **Min items** | N/A |
| **Max items** | N/A |
| **Items unicity** | True |
| **Additional items** | False |
| **Tuple validation** | See below |
| Each item of this array must be | Description |
| ------------------------------- | ------------------------------- |
| [coordinateSystem](#items) | Coordinate Systems for OME-NGFF |
## 1. Coordinate systems > coordinateSystem
| | |
| ------------------------- | ------------------------------------------------------------------------- |
| **Type** | `object` |
| **Required** | No |
| **Additional properties** | [[Any type: allowed]](# "Additional Properties of any type are allowed.") |
| **Defined in** | #/$defs/coordinateSystem |
**Description:** Coordinate Systems for OME-NGFF
| Property | Pattern | Type | Deprecated | Definition | Title/Description |
| ---------------------- | ------- | ------ | ---------- | -------------- | ----------------------------------------------------------------------- |
| + [name](#items_name ) | No | string | No | - | Name of coordinate system. Must be unique among all coordinate systems. |
| + [axes](#items_axes ) | No | array | No | In axes.schema | OME-Zarr Axes. |
### 1.1. Property `Coordinate systems > root items > name`
| | |
| ------------ | -------- |
| **Type** | `string` |
| **Required** | Yes |
**Description:** Name of coordinate system. Must be unique among all coordinate systems.
| Restrictions | |
| -------------- | - |
| **Min length** | 1 |
### 1.2. Property `Coordinate systems > root items > axes`
| | |
| -------------- | ----------- |
| **Type** | `combining` |
| **Required** | Yes |
| **Defined in** | axes.schema |
**Description:** OME-Zarr Axes.
| One of(Option) |
| ------------------------------ |
| [item 0](#items_axes_oneOf_i0) |
| [item 1](#items_axes_oneOf_i1) |
#### 1.2.1. Property `Coordinate systems > root items > axes > oneOf > item 0`
| | |
| ------------------------- | ------------------------------------------------------------------------- |
| **Type** | `object` |
| **Required** | No |
| **Additional properties** | [[Any type: allowed]](# "Additional Properties of any type are allowed.") |
#### 1.2.2. Property `Coordinate systems > root items > axes > oneOf > item 1`
| | |
| ------------------------- | ------------------------------------------------------------------------- |
| **Type** | `object` |
| **Required** | No |
| **Additional properties** | [[Any type: allowed]](# "Additional Properties of any type are allowed.") |
| | Array restrictions |
| -------------------- | ------------------ |
| **Min items** | 1 |
| **Max items** | 5 |
| **Items unicity** | True |
| **Additional items** | False |
| **Tuple validation** | See below |
| Each item of this array must be | Description |
| ------------------------------- | ----------- |
| [axis](#items_axes_items) | - |
#### 1.2.3. Coordinate systems > root items > axes > axis
| | |
| ------------------------- | ------------------------------------------------------------------------- |
| **Type** | `object` |
| **Required** | No |
| **Additional properties** | [[Any type: allowed]](# "Additional Properties of any type are allowed.") |
| **Defined in** | #/$defs/axis |
| Property | Pattern | Type | Deprecated | Definition | Title/Description |
| ----------------------------------------- | ------- | ------- | ---------- | ---------- | -------------------------------------------------------------- |
| + [name](#items_axes_items_name ) | No | string | No | - | Name of the axis. Must be unique within the coordinate system. |
| - [longName](#items_axes_items_longName ) | No | string | No | - | Longer name or description of the axis. |
| - [type](#items_axes_items_type ) | No | string | No | - | Type of the axis. Can be a predefined type or custom type. |
| - [discrete](#items_axes_items_discrete ) | No | boolean | No | - | Whether the dimension is discrete |
| - [unit](#items_axes_items_unit ) | No | string | No | - | Unit for the axis |
##### 1.2.3.1. Property `Coordinate systems > root items > axes > axes items > name`
| | |
| ------------ | -------- |
| **Type** | `string` |
| **Required** | Yes |
**Description:** Name of the axis. Must be unique within the coordinate system.
| Restrictions | |
| -------------- | - |
| **Min length** | 1 |
##### 1.2.3.2. Property `Coordinate systems > root items > axes > axes items > longName`
| | |
| ------------ | -------- |
| **Type** | `string` |
| **Required** | No |
**Description:** Longer name or description of the axis.
##### 1.2.3.3. Property `Coordinate systems > root items > axes > axes items > type`
| | |
| ------------ | -------- |
| **Type** | `string` |
| **Required** | No |
**Description:** Type of the axis. Can be a predefined type or custom type.
##### 1.2.3.4. Property `Coordinate systems > root items > axes > axes items > discrete`
| | |
| ------------ | --------- |
| **Type** | `boolean` |
| **Required** | No |
**Description:** Whether the dimension is discrete
##### 1.2.3.5. Property `Coordinate systems > root items > axes > axes items > unit`
| | |
| ------------ | -------- |
| **Type** | `string` |
| **Required** | No |
**Description:** Unit for the axis
----------------------------------------------------------------------------------------------------------------------------
Generated using [json-schema-for-humans](https://github.com/coveooss/json-schema-for-humans) on 2026-04-01 at 17:39:10 +0000