[Paraview] origin of arc_length after application of "plot on intersection line" filter

[Takuya OSHIMA]

waku2005,

* Make the intersection line visible in the 3D view by clicking the
eye-icon
* Open Selection Inspector
* Choose the PlotOnIntersectionCurve object from Current Object
* Click Create Selection
* Choose POINT from Field Type
* Click New Value
* Enter Composite ID of your interst DataSet from the Data Hierarchy
  list on the left
* Enter 0 in the Index field

And you should be able to see the origin point is highlighted in the
3D view and the 2D plot view.

Additionaly, you can see which points in 3D view corresponds to which
part of the plot by clicking Select Points On in the menu bar and
selecting the points by mouse, with point ID labels if you further do
* Click Point Label in the selection inspector
* Check Visible
* Label Mode: Point IDs.

Takuya

Takuya OSHIMA, Ph.D.
Faculty of Engineering, Niigata University
8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN


From: waku2005 <waku2005 at gmail.com>
Subject: [Paraview] origin of arc_length after application of "plot on intersection line" filter
Date: Tue, 24 May 2011 16:50:53 +0900

> Dear all;
> 
> I have been calculated  a flow around a car in a duct.
> I hope to know the distribution of pressure coefficient  on the body
> surface, particularly on the typical intersection lines
> in order to compare experimental results.
> 
> Please let me know about the "plot on intersection line"
> After plotting the surface pressure, I had applied the " plot on
> intersection line" filter to the surface plot.
> I choose a y-normal intersection (y = 0, center of the body) and the
> plot will be done to the X-Z surface intersection line.
> I can see the 2-D plot of pressure (Vert. axis) vs arc_length (Hori.axis).
> 
> Then, my first question is where is the point of the arc_length == 0,
> i.e.,  what are values of x and z at the arc_length == 0 ?
> Second one is the calculation direction of the arc_length, because the
> arc_length calculation can be defined CW or CCW  to the y-normal axis.
> 
> Best regards.
> waku2005 at gmail.com
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