GRID_EXTEND

        GRID_EXTEND

    This task makes a cube from a table containing irregularly sampled data.
    The data is interpolated/extrapolated using a  convolution  taking  into
    account the beam size of the observing telescope.

    In mode NATURAL, a convolution kernel is used to interpolate the irregu-
    larly sampled data using the weight of each individual point.

    In mode UNIFORM, the same convolution process is used but the individual
    points are assumed to have equal weight.

    The  pixel size is specified by the user, but the map size is determined
    by the task.  The input table can be created by command GRID  in  CLASS,
    or using task TABLE from a formatted file.