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eval.txt
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eval.txt
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.. _eval:
eval
****
There are 3 forms of this command.
:code:`eval(expression, image)`
===============================
Evaluates a mathematical expression on each pixel of one or more images. The expression is given as a string.
This command can be used in the distributed processing mode. Use :ref:`distribute` command to change processing mode from local to distributed.
Arguments
---------
expression [input]
~~~~~~~~~~~~~~~~~~
**Data type:** string
The expression to evaluate on each pixel.
image [input & output]
~~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image
Image to process. The result will be assigned to this image. This image can be referenced by name x0 in the expression.
:code:`eval(expression, image, argument image)`
===============================================
Evaluates a mathematical expression on each pixel of one or more images. The expression is given as a string.
This command can be used in the distributed processing mode. Use :ref:`distribute` command to change processing mode from local to distributed.
Arguments
---------
expression [input]
~~~~~~~~~~~~~~~~~~
**Data type:** string
The expression to evaluate on each pixel.
image [input & output]
~~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, int8 image, int16 image, int32 image, int64 image, float32 image
Image to process. The result will be assigned to this image. Pixel of this image can be referenced by name x0 in the expression.
argument image [input]
~~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, float32 image, int8 image, int16 image, int32 image, int64 image
Argument image. Pixel of this image can be referenced by name x1 in the expression.
:code:`eval(expression, image, argument image, argument image 2)`
=================================================================
Evaluates a mathematical expression on each pixel of one or more images. The expression is given as a string.
This command can be used in the distributed processing mode. Use :ref:`distribute` command to change processing mode from local to distributed.
Arguments
---------
expression [input]
~~~~~~~~~~~~~~~~~~
**Data type:** string
The expression to evaluate on each pixel.
image [input & output]
~~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, float32 image
Image to process. The result will be assigned to this image. Pixel of this image can be referenced by name x0 in the expression.
argument image [input]
~~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, float32 image
Argument image. Pixel of this image can be referenced by name x1 in the expression.
argument image 2 [input]
~~~~~~~~~~~~~~~~~~~~~~~~
**Data type:** uint8 image, uint16 image, uint32 image, uint64 image, float32 image
Argument image. Pixel of this image can be referenced by name x2 in the expression.