proj_field

'proj_field': projects the field on a projection object
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  function [ProjData,errormsg]=proj_field(FieldData,ObjectData,IndexObj)

 OUTPUT:
 ProjData structure containing the fields of the input field FieldData,
 transmitted or projected on the object, plus the additional fields
    .UMax, .UMin, .VMax, .VMin: min and max of velocity components in a domain
    .UMean,VMean: mean of the velocity components in a domain
    .AMin, AMax: min and max of a scalar
    .AMean: mean of a scalar in a domain  
  .NbPix;
  .DimName=  names of the matrix dimensions (matlab cell)
  .DimValue= values of the matricx dimensions (matlab vector, same length as .DimName);
  .VarName= names of the variables [ProjData.VarName {'A','AMean','AMin','AMax'}];
  .VarDimNameIndex= dimensions of the variables, indicated by indices in the list .DimName;

INPUT
 ObjectData: structure characterizing the projection object
    .Style : style of projection object
    .ProjMode=type of projection ;
    .CoordType: 'px' or 'phys' type of coordinates defining the object position
    .Phi  angle of rotation (=0 by default)
    .ProjAngle=angle of projection;
    .DX,.DY,.DZ=increments along each coordinate
    .Coord(nbpoints,3): set of coordinates defining the object position;