Name: thm_part_slice2d_geo.pro Purpose: Helper function for thm_part_slice2d.pro Produces slice using each bin's boundaries. Input: data: N element array of data values rad: N element array of radial values phi: N element array of phi values theta: N element array of theta values dp: N element array of phi ranges dt: N element array of theta ranges dr: N element array of velocity ranges resolution: Single value (R) giving the number of points in each dimension of the slice average_angle: Two element array specifying an angle range over which averaging will be applied. The angle is measured from the slice plane and about the slice's x-axis. e.g. [-25,25] will average data within 25 degrees of the slice plane about it's x-axis ct: Rotation matrix from DSL -> desired coordinates rot: Rotation matrix from given coordinates to specific rotation (e.g. DSL, GSM -> BV, perp_xy) mt: Rotation matrix from specified coords/rotation into the slice plane's coordinates Output: xgrid: R element array of x-axis values for the slice ygrid: R element array of y-axis values for the slice part_slice: RxR element array containing the slice data Other Keywords: msg_obj: Object reference to GUI message bar. If included useful console messages will also be output to GUI. msg_prefix: String prefix to be printed with progress messages. Caveats: This routine will slow as the number of bins (N) increases. Averaging will significantly lengthen the require time.