Description
Calculates the natural logarithm of the specified scalar field.
Performs \f$ln(max(x, a))\f$ where \f$x\f$ is the field and \f$a\f$ an
optional clip to handle 0 or negative \f$x\f$. Dimension checking can
optionally be suspended for this operation if \f$x\f$ is dimensioned.
Example of function object specification:
\verbatim
log1
{
type log;
libs ("libfieldFunctionObjects.so");
field p;
clip 1e-3;
checkDimensions no;
}
\endverbatim
or using \c postProcess
\verbatim
postProcess -func 'log(p, clip=1e-3, checkDimensions=no)'
\endverbatim
Usage
\table
Property | Description | Required | Default value
type | Type name: log | yes |
clip | Clip value | no |
checkDimensions | Dimension checking switch | no |
\endtable
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