Scripting Node - Revision history

Admin at 21:39, 2 August 2017

2017-08-02T21:39:47Z

Admin at 20:18, 2 August 2017

2017-08-02T20:18:27Z

Admin: /* Examples using a vector field */

2017-08-02T20:17:50Z

‎Examples using a vector field

Admin: /* Examples using a vector field */

2017-08-02T20:17:00Z

‎Examples using a vector field

Admin: /* Examples using a vector field */

2017-08-02T20:16:41Z

‎Examples using a vector field

Admin at 20:14, 2 August 2017

2017-08-02T20:14:55Z

Admin at 22:50, 31 July 2017

2017-07-31T22:50:45Z

Admin at 22:50, 31 July 2017

2017-07-31T22:50:36Z

Admin at 22:49, 31 July 2017

2017-07-31T22:49:49Z

Admin: Created page with "The scripting node allows to perform operations on the data using a javascript-like syntax. This node can be added to any other node, for example a Volume Node (i.e. to produ..."

2017-07-31T22:41:36Z

Created page with "The scripting node allows to perform operations on the data using a javascript-like syntax. This node can be added to any other node, for example a Volume Node (i.e. to produ..."

New page

The scripting node allows to perform operations on the data using a javascript-like syntax.

This node can be added to any other node, for example a Volume Node (i.e. to produce a volume rendering of the data).

A Volume Node for a vector field will visualize a volume rendering as following:

Since the data has 3 components the default visualization uses the 3 components as RGB channels.

If we want to evaluate and visualize the squared magnitude of this (three-dimensional) vector field the user can simply insert a scripting node with the following script:
output=
((1.0*input[0])*input[0]) +
((1.0*input[1])*input[1]) +
((1.0*input[2])*input[2]);

Where the <code>input</code> field represent the input data that enter the scripting node, the output represents the result of the computation.

The output will be a scalar field that will be rendered as following:

← Older revision		Revision as of 21:39, 2 August 2017
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	This node can be added to any other node, for example a [[Volume Node]] (i.e. to produce a volume rendering of the data) or a [[Slice Node]].		This node can be added to any other node, for example a [[Volume Node]] (i.e. to produce a volume rendering of the data) or a [[Slice Node]].
		+
		+	== Example using 2D images ==
		+
		+	Using the Gigapixel David dataset at the URL: http://atlantis.sci.utah.edu/mod_visus?dataset=david
		+
		+	we can apply scripting using some of the predefined filters/scripts.
		+
		+	For example from the original image:
		+
		+	[[File:david_eye.png\|350px]]
		+
		+	Using a "2D/Emboss" script you will get something like the following:
		+
		+	[[File:david_eye_emboss.png\|350px]]
		+

	== Examples using a vector field ==		== Examples using a vector field ==

@@ Line 1: / Line 1: @@
 The scripting node allows to perform operations on the data using a javascript-like syntax.
-This node can be added to any other node, for example a Volume Node (i.e. to produce a volume rendering of the data).
+This node can be added to any other node, for example a [[Volume Node]] (i.e. to produce a volume rendering of the data) or a [[Slice Node]].
 == Examples using a vector field ==

@@ Line 8: / Line 8: @@
 You can open this dataset with your [[ViSUS Viewer]] using "Open URL" and this address: http://atlantis.sci.utah.edu/mod_visus?dataset=lifted_time
-A Volume Node for a vector field will visualize a volume rendering as following:
+A Volume Node for a vector field will visualize a volume rendering as following (using a "Gamma" palette):
 [[File:flame_vfield.png|350px]]

@@ Line 31: / Line 31: @@
 where the second and third parameters of the ''lic'' function are the vector's components that we want to use for the computation.
-The result will be like this (using a "Banded" palette) adding this script to a [[Slice Node]]:
+The result will be like the following (using a "Banded" palette) adding this script to a [[Slice Node]]:
 [[File:lic_banded.png|350px]]

@@ Line 31: / Line 31: @@
 where the second and third parameters of the ''lic'' function are the vector's components that we want to use for the computation.
-The result will be like this (using a "Banded" palette):
+The result will be like this (using a "Banded" palette) adding this script to a [[Slice Node]]:
 [[File:lic_banded.png|350px]]

@@ Line 2: / Line 2: @@
 This node can be added to any other node, for example a Volume Node (i.e. to produce a volume rendering of the data).
 A Volume Node for a vector field will visualize a volume rendering as following:
@@ Line 20: / Line 25: @@
 [[File:flame_mag2.png|350px]]

← Older revision		Revision as of 22:50, 31 July 2017
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	The output will be a scalar field that will be rendered as following:		The output will be a scalar field that will be rendered as following:
		+
	[[File:flame_mag2.png\|350px]]		[[File:flame_mag2.png\|350px]]

← Older revision		Revision as of 22:49, 31 July 2017
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	A Volume Node for a vector field will visualize a volume rendering as following:		A Volume Node for a vector field will visualize a volume rendering as following:

		+	[[File:flame_vfield.png\|350px]]

	Since the data has 3 components the default visualization uses the 3 components as RGB channels.		Since the data has 3 components the default visualization uses the 3 components as RGB channels.