# shconv¶

## Synopsis¶

Perform a spherical convolution

## Usage¶

shconv [ options ]  SH_in response SH_out

• SH_in: the input spherical harmonics coefficients image.
• response: the convolution kernel (response function)
• SH_out: the output spherical harmonics coefficients image.

## Description¶

The spherical harmonic coefficients are stored according the conventions described the main documentation, which can be found at the following link: https://mrtrix.readthedocs.io/en/3.0_RC3/concepts/spherical_harmonics.html

## Options¶

• -mask image only perform computation within the specified binary brain mask image.

### Stride options¶

• -strides spec specify the strides of the output data in memory; either as a comma-separated list of (signed) integers, or as a template image from which the strides shall be extracted and used. The actual strides produced will depend on whether the output image format can support it.

### Standard options¶

• -info display information messages.
• -quiet do not display information messages or progress status; alternatively, this can be achieved by setting the MRTRIX_QUIET environment variable to a non-empty string.
• -debug display debugging messages.
• -force force overwrite of output files (caution: using the same file as input and output might cause unexpected behaviour).