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java.lang.Objectorg.geotools.coverage.processing.AbstractOperation
org.geotools.coverage.processing.Operation2D
org.geotools.coverage.processing.OperationJAI
org.geotools.coverage.processing.operation.Log
public class Log
Takes the natural logarithm of the sample values of a coverage.
Name: "Log"
JAI operator: "Log"
Parameters:
Name | Class | Default value | Minimum value | Maximum value |
---|---|---|---|---|
"Source" |
GridCoverage2D |
N/A | N/A | N/A |
Operations.log(org.opengis.coverage.Coverage)
,
LogDescriptor
,
Serialized FormNested Class Summary |
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Nested classes/interfaces inherited from class org.geotools.coverage.processing.OperationJAI |
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OperationJAI.Parameters |
Field Summary |
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Fields inherited from class org.geotools.coverage.processing.OperationJAI |
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operation, RENDERED_MODE |
Fields inherited from class org.geotools.coverage.processing.Operation2D |
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PRIMARY_SOURCE_INDEX, SOURCE_0 |
Fields inherited from class org.geotools.coverage.processing.AbstractOperation |
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descriptor |
Constructor Summary | |
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Log()
Constructs a default "Log" operation. |
Method Summary | |
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protected NumberRange |
deriveRange(NumberRange[] ranges,
OperationJAI.Parameters parameters)
Returns the expected range of values for the resulting image. |
Methods inherited from class org.geotools.coverage.processing.OperationJAI |
---|
createRenderedImage, deriveCategory, deriveGridCoverage, deriveName, deriveSampleDimension, deriveUnit, doOperation, equals, getJAI, getOperationDescriptor, getProperties, getQuantitative, prepareParameters, resampleToCommonGeometry |
Methods inherited from class org.geotools.coverage.processing.Operation2D |
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computeOnGeophysicsValues, extractSources, getFactory |
Methods inherited from class org.geotools.coverage.processing.AbstractOperation |
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ensureNonNull, getDescription, getDocURL, getName, getNumSources, getParameters, getProcessor, getVendor, getVersion, hashCode, toString |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Log()
"Log"
operation.
Method Detail |
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protected NumberRange deriveRange(NumberRange[] ranges, OperationJAI.Parameters parameters)
deriveRange
in class OperationJAI
ranges
- The range of values from every sources. For unary operations like
"GradientMagnitude"
, this array has a length of 1. For binary operations
like "add"
and "multiply"
, this array has a length of 2.parameters
- Parameters, rendering hints and coordinate reference system to use.
null
if unknow.
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