Example of usage |
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Point LookupHere is an example of one way to determine a soil texture class based on a given particle-size distribution: std::fstream fin("schemes/uk.dat"); // file with the UK scheme tal::soiltex soil; // soiltex object soil.LoadScheme(fin); // load the scheme from file if (soil.IsSchemeValid()) // make sure scheme is valid { double dSand = 33.5; // 33.5% sand double dClay = 23.5; // 23.5% clay // lookup the UK texture class now; // the z-coordinate is unused by default std::vector<tal::TEXTURE> result = soil.PointLookup(dSand, dClay); }
Range LookupHere is an example of one way to determine all soil texture classes based on the given ranges of particle-size distribution: std::fstream fin("schemes/uk.dat"); // file with the UK scheme tal::soiltex soil; // soiltex object soil.LoadScheme(fin); // load the scheme from file if (soil.IsSchemeValid()) // make sure scheme is valid { tal::RANGE rgx(10, 70); // 10 to 70% sand tal::RANGE rgy(30, 50); // 30 to 50% clay // lookup the UK texture classes now; // z-coordinate range is 0 to 100% by default std::vector<tal::TEXTURE> result = soil.RangeLookup(rgx, rgy); }
Result of LookupFrom the above two examples, the result container, returned after a Point or Range Lookup, can be indexed in the following manner: // output every texture class code and name for (int i=0; i<result.size(); ++i) std::cout << result[i].mCode << ", " << result[i].mName << std::endl;
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updated: 02-Mar-2001 |