> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/~/changes/AJZwzCsyrD9hiTbOxIbO/contextual-or-derived-mapping/1-50-000-scale-colour-raster.md).

# 1:50 000 Scale Colour Raster

{% embed url="<https://www.ordnancesurvey.co.uk/products/50k-raster>" %}

1:50 000 Scale Colour Raster is the digital alternative to Ordnance Survey's OS Landranger paper map series for Great Britain available in 20km square tiles.

{% hint style="info" %}
**This product is updated quarterly in March, June, September and December.**
{% endhint %}

<figure><img src="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2FOPHSvYggYp3KU5rNIgyy%2Fimage.png?alt=media&amp;token=661fd5b8-6329-46f2-839d-29875fdb0c2e" alt="1:50000 Scale Colour Raster map example showing a mountainous region in Scotland "><figcaption><p>1:50 000 Scale Colour Raster map example</p></figcaption></figure>

{% tabs %}
{% tab title="Features" %}

#### **Used by Emergency Services**

1:50 000 Scale Colour Raster helps emergency control centre staff respond more effectively to calls. Using clearly shown landmarks, they can ask distressed callers if they can see the local pub or church, to pinpoint incident locations quickly.

#### **Retina resolution**

We give you 1:50 000 Scale Colour Raster at a resolution of 254 dpi – and Partners at a staggering 660 dpi – so it looks stunning on today’s high-resolution displays, whether on desktop, tablet or mobile.

#### **Plenty of places to visit**

Tourist and heritage attractions of many types are shown on this mapping, so leisure app users can use it to find their way by road, footpath or cycle route to a place of interest, whether it’s a sports centre or a nature reserve.

#### **Ideal for desktop publishing**

When you need map extracts for a consultation document or a published magazine, you can open 1:50 000 Scale Colour Raster TIFF files in software like Photoshop and InDesign.
{% endtab %}

{% tab title="Use Cases" %}

#### **For local planners**

This map helps you spot brownfield sites ripe for development, and analyse the quality of local transport links. Railways and important roads are clearly colour-coded.

1:50 000 Scale Colour Raster is a must-have map in **any navigation app or device** for walkers and cyclists. It depicts the landscape with superb detail and clarity.
{% endtab %}

{% tab title="Summary" %}

* **Access:** Download
* **Data theme:** Contextual
* **Data structure:** Raster
* **Coverage:** Great Britain
* **Scale:** 1:50 000
* **Format:** GeoTIFF, TIFF 8-bit LZW compressed, TIFF Palette 8-bit (256 colours) uncompressed, Windows BMP uncompressed
* **Ordering area**: Customisable Area (20km² tiles)
* **Publication months:** March, June, September, December
* **OS Data Hub plan:** Public Sector Plan, Premium Plan, Energy & Infrastructure Plan
  {% endtab %}

{% tab title="Additional Information" %}

#### **Defining your own areas**

You can order 1:50 000 Scale Colour Raster by user-defined areas:

* Specific tile identities
* Administrative region
* Bounding box

It's also available covering:

* Great Britain
* England
* Scotland
* Wales

Tiles are, however, supplied whole rather than being clipped to fit geographic areas.

#### **Colour options**

Palette of 256 colours

#### **Converting to a monochrome image**

Some software packages have a facility whereby you can load the colour image onto a computer and, using one of the command drop-down menus, select the greyscale option. This will change the colours on an image to shades of grey (greyscale). This is not the same output as monochrome where features in the file are either black or white.
{% endtab %}
{% endtabs %}

## How to get this product

Access to this product is free for Public Sector Geospatial Agreement (PSGA) Members. Find out if you are a PSGA Member or download a sample of 1:50 000 Scale Colour Raster data by accessing the [product page of the OS website](https://www.ordnancesurvey.co.uk/products/50k-raster#get), which has links to all of the relevant resources. Alternatively, you can try out the full product by applying for [a Data Exploration license](https://www.ordnancesurvey.co.uk/licensing/data-exploration-licence).

## Visualise 1:50 000 Scale Colour Raster data online

This product is available to try out online using one of our three sets of sample data (Exeter, Newport and Inverness) through the OS MasterMap Product Viewer:

<table data-view="cards" data-full-width="false"><thead><tr><th></th><th></th><th data-hidden></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>OS MasterMap Product Viewer</strong></td><td>Interactive demonstrator of <mark style="color:purple;">OS MasterMap Generation</mark> data</td><td></td><td><a href="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2Fuld7V42IKrB8ovpC1JXB%2FVectorMap-Local-1.png?alt=media&amp;token=cb3e8ae9-d669-4bc9-b7a7-5f479d780447">VectorMap-Local-1.png</a></td><td><a href="https://experience.arcgis.com/experience/20981dabcb14402687dccb437a4a78fb/">https://experience.arcgis.com/experience/20981dabcb14402687dccb437a4a78fb/</a></td></tr></tbody></table>


---

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