DIPlib Documentation - ©1995-2013 Quantitative Imaging Group, Delft University of Technology.

# PhysicalDimensionsNew

Allocates a new Physical Dimensions structure

## SYNOPSIS

dip_Error dip_PhysicalDimensionsNew ( newPhysDims, dimensionality, dims, orig, dimUnit, intensity, offset, intensUnit, resources )

## FUNCTION

This function allocates a new Physical Dimensions structure.

A physical dimensions structure contains information about the physical dimensions of the data (of `dimensionality` dimension) in an image. It describes the position (`orig`) and size (`dims`) of a pixel in world coordinates and physical units (`dimUnits`), as well as the scaling (`intensity`) and offset (`offset`) of the pixel intensity in physical units (`intensUnit`).

Note that the initial values assigned by this function assume an isotropic pixel size. These values can be changed within the structure generated if this is not the case.

## ARGUMENTS

Data type | Name | Description
`dip_PhysicalDimensions *` | `newPhysDims` | Pointer to a new Physical Dimensions data structure
`dip_int` | `dimensionality` | Dimensionality of the image
`dip_float` | `dims` | Initial value for `dimensions` along all axes
`dip_float` | `orig` | Initial value for `origin` along all axes
`char *` | `dimUnit` | Initial value for `dimensionUnits` along all axes
`dip_float` | `intensity` | Initial value for `intensity`
`dip_float` | `offset` | Initial value for `offset`
`char *` | `intensUnit` | Initial value for `intensityUnit`
`dip_Resources` | `resources` | Resources tracking structure. See `ResourcesNew`

The structure `dip_PhysicalDimensions` contains the following elements:

Data type | Name | Description
`dip_FloatArray` | `dimensions` | Dimensions of a pixel along each grid axis
`dip_FloatArray` | `origin` | Coordinates of the origin in physical units
`dip_StringArray` | `dimensionUnits` | Units for `dimensions` and `origin`
`dip_float` | `intensity` | Intensity scaling in physical units
`dip_float` | `offset` | Offset for intensity in physical units
`dip_String` | `intensityUnit` | Units for `intensity` and `offset`
`dip_Resources` | `resources` | Resource tracking; all elements within this structure are tracked here

## SEE ALSO

`PhysicalDimensionsFree`, `PhysicalDimensionsCopy`, `PhysicalDimensionsIsIsotropic`