Merge regridding tables

　入力データを設定するブロック。変数一覧

Key	Data type	Description	Default value
dir	path	Parent directory of the paths of the files below	''
length_rt	integer	Length of the regridding table
f_rt_sidx	file	Input file of the index of the source grid of the regridding table	'', int4, 1, little
f_rt_tidx	file	Input file of the index of the target grid of the regridding table	'', int4, 1, little
f_rt_area	file	Input file of the area of the intersection of the regridding table	'', dble, 1, little
f_rt_coef	file	Input file of the interpolation coefficient of the regridding table	'', dble, 1, little
length_grid	integer	Length of the grid data (f_grdidx, f_grdara)
f_grdidx	file	Input file of the index of the grid	'', int4, 1, little
f_grdara	file	Input file of the area of the grid	'', dble, 1, little
idx_miss	integer	Missing value of grid index	-9999
opt_idx_duplication	character	An option for duplication of index ['sum'\|'stop']	'stop'

dir 　各ファイルの親ディレクトリ。