<?xml version='1.0' encoding='ISO-8859-1' standalone='yes' ?>
	<help>
		<element name="DESCRIPTION" text="This algorithms creates a raster layer from a points layer, using the Inverse Distance Weighting inteprolation method.&#10;&#10;In this method, the value for a given coordinate is calculated as a weighted sum of all the points within a search area defined by a search radius. The weight assigned to each point depends on the distance from that point to the coordinate where the value is to be calculated, according to the following formula." description="Description" type="0">
			<image description="" file="idw_eq.jpg">
			</image>
		</element>
		<element name="ADDITIONAL_INFO" text="" description="Additional information" type="0">
		</element>
		<element name="EXTENSION_AUTHOR" text="" description="Algorithm created by" type="0">
		</element>
		<element name="HELP_AUTHOR" text="" description="Help file created by" type="0">
		</element>
		<element name="USER_NOTES" text="" description="User notes" type="0">
		</element>
		<element name="LAYER" text="The input layer" description="Point layer" type="3">
		</element>
		<element name="FIELD" text="The field in the input layer that contains the variable to be interpolated" description="Field" type="3">
		</element>
		<element name="DIST" text="The search radius in map units. Only points within that area defined by this radius are used." description="Search radius" type="3">
		</element>
		<element name="POWER" text="The k value in the above formula. A value of 2 is commonly used." description="Exponent" type="3">
		</element>
		<element name="OUTPUT_DESCRIPTION" text="" description="Description" type="2">
		</element>
		<element name="RESULT" text="The resulting layer with interpolated values. No-data values are assigned to cells with no input points within the defined search radius." description="Result" type="2">
		</element>
		<element name="CROSSVALIDATION" text="Cross validation table. This is calculated interpolating at the corrdinates of the input points, using all the points except the one at that coordinate. Expected values and values obtained from interpolation are then compared to evaluate the correctness of the model, which is summarized in this table." description="Cross validation" type="2">
		</element>
	</help>
<?xml version='1.0' encoding='ISO-8859-1' standalone='yes' ?>