Abstract: A method is provided for updating a legend of a spatial display for use with graphical user interface of a field computer linked to one or more sensors for sensing data or information from a piece of equipment performing an agricultural operation. The method provides a field computer with a graphical user interface, at least one sensor operatively linked to the field computer, and a piece of equipment performing an agricultural operation and in operative communication with the at least one sensor for sensing data or information for display on the graphical user interface.

Abstract: The present invention relates to an instrument for measuring in relatively short periods of time concentrations of constituents in optically dense materials using the spectra near infrared radiation transmitted through thick samples of the material while the material is either stationary or flowing. The invention uses a broadband incandescent intensity stabilized light source combined with collimating optics to transmit a parallel beam of light through the material under test. The light transmitted through the material is then collected by a focusing lens and imaged onto a rectangular entrance slit of a special purpose spectrometer. This spectrometer has no moving parts and employs a fixed diffraction grating to physically spread the image of the entrance slit into a continuous range of wavelengths. A portion of the diffracted slit images covering the selected portion of the near infrared range is focused onto an array of individual rectangular photodiodes.