Synopsis
		sfmakevel > out.rsf n2= n1= n3=1 d2=1.0 d3=1.0 d1=1.0 o2=0.0 o3=0.0 o1=0.0 v000=2.0 dvdx2=0.0 dvdx3=0.0 dvdx1=0.0 x2lens=fx x3lens=fy x1lens=fz vlens=0.0 dlens=1.0 tlens=1.0 vran=0.0 vx1ran=0.0 vx1c=0.0 x11c=fz x12c=fz+(nz-1)*dz l1c=dz l2c=dz exc=1.0 vzfile= vx1file=

Parameters
		float d1=1.0 1st dimension sampling interval   float d2=1.0 2nd dimension sampling interval   float d3=1.0 3rd dimension sampling interval   float dlens=1.0 diameter of parabolic lens   float dvdx1=0.0 velocity gradient with respect to 1st dimension   float dvdx2=0.0 velocity gradient with respect to 2nd dimension   float dvdx3=0.0 velocity gradient with respect to 3rd dimension   float exc=1.0 exponent of chirp   float l1c=dz wavelength at beginning of chirp   float l2c=dz wavelength at end of chirp   int n1= number of z samples (1st dimension)), must be provided!   int n2= number of x samples (2nd dimension), must be provided!   int n3=1 number of y samples (3rd dimension)   float o1=0.0 Origin 1st dimension   float o2=0.0 Origin 2nd dimension   float o3=0.0 Origin 3rd dimension   float tlens=1.0 thickness of parabolic lens   float v000=2.0 velocity at (x=0,y=0,z=0)   float vlens=0.0 velocity perturbation in parabolic lens   float vran=0.0 standard deviation of random perturbation   float vx1c=0.0 1st dimension v(z) chirp amplitude   string vx1file= file containing v(z) 1st dimension profile   float vx1ran=0.0 standard deviation of random perturbation to 1st dimension   string vzfile=   float x11c=fz 1st dimension at which to begin chirp   float x12c=fz+(nz-1)*dz 1st dimension at which to end chirp   float x1lens=fz 1st dimension coordinate of center of parabolic lens   float x2lens=fx 2nd dimension coordinate of center of parabolic lens   float x3lens=fy 3rd dimension coordinate of center of parabolic lens

Used In
		RSF          school/marm su/rsfmakevel   SWAG          eikds/smvel waveds/svmod   TRIP          asg/project hug/marm1s_deep hug/marm1s_shallow struct/project