newMriImageWithData {tractor.base} | R Documentation |
Functions for creating MriImage objects from data.
newMriImageWithData(data, metadata) newMriImageFromTemplate(image, ...) newMriImageByExtraction(image, dim, loc) newMriImageByMasking(image, mask) newMriImageByThresholding(image, level, defaultValue = 0) newMriImageAsShapeOverlay(type = c("cross", "block"), baseImage, ...) generateImageDataForShape(type = c("cross", "block"), dim, background = 0, centre = NA, width = NA) newMriImageWithSimpleFunction(image, fun, ..., newDataType = NULL) newMriImageWithBinaryFunction(image1, image2, fun, ..., newDataType = NULL)
data |
An array of voxel data. |
metadata |
An MriImageMetadata object. |
image, image1, image2 |
MriImage objects. |
dim, loc |
For newMriImageByExtraction , the dimension and location along that dimension for which data should be extracted. For generateImageDataForShape , dim is the dimensions of the image. newMriImageAsShapeOverlay takes this from the baseImage . |
mask |
An array of mode logical indicating which voxels are in the mask. Must have the same dimensions as the image. |
level |
A numeric value specifying the threshold level. |
defaultValue |
The value of the final image in voxels which are below threshold. |
type |
The shape type to generate. A "block" is a cubic region of the image; a "cross" is the central line of the cube in each dimension. |
baseImage |
The MriImage to use as a base for the overlay. |
background |
The voxel value outside the shape. |
centre, width |
The centre and width of the shape. |
newDataType |
The data type of the new image. If NULL , then the data type is the same as the source image. |
fun |
A function object, taking one or two numeric array parameters, as appropriate. |
... |
For newMriImageFromTemplate , further parameters to newMriImageMetadataFromTemplate . For newMriImageAsShapeOverlay , further parameters to generateImageDataForShape . And for newMriImageWithSimpleFunction and newMriImageWithBinaryFunction , further parameters to fun . |
All of these functions use data from arrays or MriImage
objects to create a new MriImage
object. newMriImageWithData
is the basic function for creating an object from its constituents: an array of voxel values and an MriImageMetadata
object. newMriImageFromTemplate
takes an existing image, with its voxel data, and creates a new image, possibly with modifications to the metadata.
newMriImageByExtraction
reduces the dimensionality of the source image by one, by extracting a single "line" of data along one dimension. newMriImageByMasking
modifies the data by masking out unwanted voxels, and newMriImageByThresholding
by thresholding. newMriImageAsShapeOverlay
creates an image which contains a simple shape. newMriImageWithSimpleFunction
and newMriImageWithBinaryFunction
modify the image data by applying an arbitrary function to it. Any function that can be applied to numeric arrays, and expects one or two arguments, respectively, is suitable for fun
.
An MriImage
object.
Jon Clayden