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<br />OiJ0055 <br /> <br />Signature Overlap <br /> <br />Distinct Signalures <br /> <br />(I) <br />.(1} <br />::) <br />OJ (ij J.lol+2s <br />'0;:'- <br />C'(I} <br />~.~ <br />,(u <br />~ <br />'0 <br /> <br />signaltKe 1 <br /> <br />~l I'm _.--'~-'Q; <br /><<1= <br />00- c <br />~Po.B i <br /> <br /> <br />I <br />C <br /> <br /> <br />~ J ~ <br />. J J <br />(a) <br /> <br />J.la . !leI <br /> <br />Sand A . <br />dilta'file values <br /> <br />(b) <br /> <br />. Sande' <br />data file values <br /> <br />Figure 4. Signature ellipses. (a) Spectral overlap; (b) Spectrally distinct. <br /> <br />Raster Nector DataJntegration <br /> <br />1) import classified TMimage intoARCjINFO <br />2) assign numerical crop codes to each field <br />3) create mask coverages from fields with unknown crop types <br />4) use information from the classified TM image to assign crop codes <br />to fields in the mask coverages <br />5) create final coverages by combining known information (supplied <br />by the State Engineer's office) and classified image data <br />6) convert square meters to acres and compile statistics by quad <br /> <br /> <br />Numerical Crop Code Assignments <br /> <br />............. .' .,'(Ur s ~j:'ifi~l' p,(fu.n_dc;tr~~~,:~~re .vevi~wed ~y .~~ CQjqrad~ Stat~, <br />}~jj!~:<..~." ~/A ~r.:()f iltd.ivi<<tt~.;fi~lijs.' we.re assigR,d"alph,(codes <br />",'~>~ti~ei~~/i~:.~tt' ':,IrrigatiDfr~e. and~ crop ~te ;NumericaI crop <br />coa~s;Wer~+r it~. cumpatibiltt-y With 7the dassified TMlinage data. ' <br />AML(ARC Macro Language) programs were developed to' automatically <br />assignnumetical CfOP codes based upon the original alpha crop' <br />designators. For those fields with no crop information, a procedure was <br />developed to extract crop types from the classified TM image data. <br /> <br />9 <br />