Caret7:Development/DataTypes

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Caret7 DataTypes

Scalar/Metric

  • Voxel and vertexwise continuous scalar values.
  • Can be surface (GIFTI), volume (NIFTI), or combined (CIFTI-Dense Timeseries format).
  • Represented internally as CIFTI with original header stored in an array for saving as original file type.
  • For volumes, use implicit or explicit masking (i.e. only store data not equal to zero, or user provides a binary mask file).
  • Ability to save as CIFTI dense timeseries or export to NIFTI volume or GIFTI scalar.
  • Do not composite columns unless requested to do so by user.

Label/Parcellation

  • Voxel and vertexwise labeled integer values
  • Each integer is associated with:
    • Name
    • Color
    • Metadata?
  • Can be surface (GIFTI), volume (NIFTI), or combined (CIFTI-Parcellation*).
  • Represented internally as CIFTI with original header stored in an array for saving as original file type.
  • For volumes, use implicit or explicit masking (i.e. only store data not equal to zero, or user provides a binary mask file).
  • Ability to save as CIFTI parcellation* or export to NIFTI volume or GIFTI label.

*A CIFTI-parcellation is simply the header of a parcellated timeseries or connectome file. It stores the vertices and voxels that define each parcel, their names, their colors, and any relevant metadata.

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