> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/hb-radiance-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/hb-radiance-primer/components/4_results/extract_hdr.md).

# Extract HDR

![](/files/KNxRPH3KsfYW2cvWaR1g)

![](/files/vAieBofcjnZzMcDIrwoe) - [\[source code\]](https://github.com/ladybug-tools/honeybee-grasshopper-radiance/blob/master/honeybee_grasshopper_radiance/src//HB%20Extract%20HDR.py)

Interpolate or extrapolate a High Dynamic Range (HDR) image file from another HDR image file.

Recommended use is to extract 180 FOV (-vh 180 -vv 180) angular or hemispherical HDR images from a 360 FOV (-vh 360 -vv 360) angular HDR image. Alternatively, conversions between 180 FOV angular and hemispherical HDR images can be made.

### Inputs

* **view \[Required]**

A view to interpolate or extrapolate into a new HDR. The "HB View" component can be used to create an input view and it must have the same position as that use to make the \_hdr.

* **hdr \[Required]**

Path to a High Dynamic Range (HDR) image file from which to interpolate or extrapolate.

* **resolution**

An integer for the dimension of the output image in pixels. If extracting a 180 FOV angular or hemispherical HDR image from a 360 FOV HDR image, the default resolution is 1/3 of the resolution of \_hdr. If converting between 180 FOV angular or hemispherical HDR images, the default resolution is that of \_hdr.

### Outputs

* **hdr**

Path to the resulting HDR image file.


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