gvsig-geoprocess / org.gvsig.geoprocess / trunk / org.gvsig.geoprocess / org.gvsig.geoprocess.app / org.gvsig.geoprocess.app.mainplugin / src / main / resources-plugin / help / en / es.unex.sextante.vegetationIndices.pviPerry / pviperry.xml @ 417
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<?xml version='1.0' encoding='ISO-8859-1' standalone='yes' ?>
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<help>
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<element name="DESCRIPTION" text="This algorithm calculates the Perpendicular Vegetation Index (PVI) based on Perry and Lautenschlager, 1984. To calculate this index, a soil line is needed. A soil line is produces through linear regression of the near-infrared band and the red band for a sample of bare soil pixels. The index is the result of the following formula (a and b are the slope and intercept of the soil line, respectively):" description="Description" type="0"> |
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<image description="" file="pvi_perry_formula.jpg"> |
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</image>
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</element>
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<element name="ADDITIONAL_INFO" text="* Perry, C. J. & Lautenschlager, L. F. Functional Equivalence of Spectral Vegetation Indices Remote Sensing and the Environment, 1984, 14, 169-182" description="Additional information" type="0"> |
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</element>
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<element name="EXTENSION_AUTHOR" text="Victor Olaya" description="Extension created by" type="0"> |
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</element>
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<element name="HELP_AUTHOR" text="Victor Olaya" description="Help file created by" type="0"> |
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</element>
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<element name="USER_NOTES" text="" description="User_notes" type="0"> |
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</element>
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<element name="LAYERRED" text="Layer with values corresponding to the spectral reflectance in the red region" description="Red layer" type="3"> |
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</element>
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<element name="BANDRED" text="Band with values corresponding to the spectral reflectance in the red region" description="Red band" type="3"> |
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</element>
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<element name="LAYERNIR" text="Layer with values corresponding to the spectral reflectance in the near infrared region" description="Near infrarred layer" type="3"> |
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</element>
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<element name="BANDNIR" text="Band with values corresponding to the spectral reflectance in the near infrared region" description="Near infrarred layer" type="3"> |
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</element>
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<element name="SLOPE" text="Slope of the soil line" description="Soil line slope" type="3"> |
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</element>
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<element name="INTERCEPT" text="Intercept of the soil line" description="Soil line intercept" type="3"> |
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</element>
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<element name="OUTPUT_DESCRIPTION" text="" description="Description" type="2"> |
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</element>
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<element name="RESULT" text="PVI" description="Result" type="2"> |
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</element>
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</help>
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<?xml version='1.0' encoding='ISO-8859-1' standalone='yes' ?>
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