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mio_reader(visage) VISAGE mio_reader(visage)

NAME

mio_reader - mio file interface for structured points

DESCRIPTION

The mio_reader class is used to generate 3D structured point sets from data in mio files.

SUPERCLASS

visage_reader

INSTANCE VARIABLES

roi is a six-element vector describing the region of interest in the data set. Its elements are xmin, xmax, ymin, ymax, zmin, and zmax. The x and y elements are zero offset and the z elements are one offset. Thus, for a data set of 93 slices, each of 256x256 pixels, the maximal region of interest would be (0,255,0,255,1,93). By default, if any pair of elements are both zero, the length of that axis of interest is the entire axis.

file_type is a string denoting the type of data. This can be the suffix of any of the mio_* file access classes, currently "2d", "3d", "xim", "dues", "signa", or "ipde".

MESSAGES

roi=xmin,ymin,xmax,ymax,zmin,zmax sets the region of interest.

file_type=string sets the file type for the data set.

free! frees the object and all dynamically allocated memory.

read! generates a data set from the files that hold the data. A visage_data_group object is generated, whose name is the last element of the prefix (i.e., "<dg>"). A visage_data_set is generated named "<dg>_set", a structured point set is generated named "<dg>_set_geometry", and a visage scalar is generated named "<dg>_set_scalars".

NOTE

The data group name is converted to lowercase before generating objects. Conflicts will arise if two data sets differ only in the case of the letters in the filenames.

EXAMPLE

/* read a subset of a mio_2d data set */ mio_reader new: reader file_prefix=`/home/moose/u0/lorensen/cubes/ect/heart'

file_type=`2d' roi=(10,40,10,40,2,28) read! ;

Executing the above LYMB statements generates the following output to the terminal:

Created visage_data_group: heart Created visage_data_set: heart_set Created structured_point_set: heart_set_geometry Created visage_scalar: heart_set_scalars