;Get the row and column of the L1A pixel closest to the given latitude and longitude
;
;input
;  img_lat,img_lon - latitude and longitude of each pixel in the 1A image. Should be 2D arrays 170x340
;  pt_lat,pt_lon   - latitude and longitude which is being searched for
;  /deg            - set if units of latitude and longitude above are in degrees
;return
;  2 element array with column and row of nearest pixel to given latitude
function find_pix,img_lat,img_lon,pt_lat,pt_lon,deg=deg
  d=gcdist(img_lat,img_lon,pt_lat,pt_lon,deg=deg)
  junk=min(d,index)
  return,array_indices(img_lat,index)
end