lp_interp - interpolate (linear) the field into new size and dimension.

Calling Sequence

[field_out]=lp_interp(field_in,size_new[,new_number[,x_shift[,y_shift[,angle[,magnif]]]]])

Parameters

• field_in :input field. it must be diffractive wavefront.
• size_new : the new size after transformt.( default is 0), if size_new=0, then the size of the field will not changed.
• new_number : input the new number after transformt(integer). default is 0, if new_number=0, then the size of the field will not changed.
• x_shift : the shifts of the X direction in metre. ( default is 0.)
• y_shift : the shifts of the Y direction in metre. ( default is 0.)
• angle : the rotated angle in degree.( default is 0. )
• magnif : the coefficient of magnification ( default is 1.).
• field_out : the output field or diffractive wavefront.

Description

compare to interpol , interp is more fast (but its effect is not good).

Examples

	f1=begin(0.01,1e-6);
	f2=rect_ap(f1,0.005);
	f3=forvard(f2,0.2);
	file_ps(f3,"int1");
	f4=lp_interp(f3,0.0075,64);
	field_plot(f4);
 

Author

Chen jingyuan, Gan guangyong (IAPCM, Beijing,China.)

See Also

interpol ,   interpolate ,