| | \n\n \n \n \n float alpha=0.1 | \twidth parameter of ground roll \n | \n \n\n \n \n \n float beg1=0. | \tradial beginning point at first axis \n | \n \n\n \n \n \n float beg2=0. | \tradial beginning point at second axis \n | \n \n\n \n \n \n float begf=10. | \tbeginning frequency of ground roll \n | \n \n\n \n \n \n float endf=5. | \tending frequency of ground roll \n | \n \n\n \n \n \n bool rep=n [y/n] | \tif y, replace data with noise \n | \n \n\n \n \n \n float theta=0.2 | \tdirection of central ground roll \n | \n \n |