Using vector in labview
Hello,
I'm verry new in labview so I don't know a lot about it (yet).
I use a Vision assistant from labview to detect red points in a scene, another one assistant to dectect blue points and a third one to detect green points. I receive coordinates and area of each point detect by all the assistants, for each color I only use the two biggest point. So Now I have six points, two of each color.
For the experience I'm working on, I need to give a ID to each points, red => 1 and 2, blue => 3 and 4, green => 5 and 6.
All of these work perfectly. I need help for the following: I need to calculate the angle between the vector 12 and 23 and the vector 23 and 56.
I have no idea how to it in labview and the only stuff I found on the web was the NI documentation on Unit vector, and i havn't understand anything...
Thanks for your help !
convert the vectors to complex (x=RE, y=IM), subtract pairwise, then get theta.
LabVIEW Champion . Do more with less code and in less time .
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Does anyone have any idea of why? how can I solve the problem? Isn't Vector supposed to be "dynamic"?
Elsewhere I use Vectors with no problems but I am not accessing it right after having added any element, rather I return it as the result of some elaboration and then access it.
I know it's Christmas time and so I wish you all Merry Christmas and Happy new Year. I hope someone has time to answer me over this holydays.
Thanks anyway,
RosarioDoes anyone have any idea of why? how can I solve the
problem? Isn't Vector supposed to be "dynamic"?You try to access an element after the last element. When you set i = list.size(), i will be the index of the last element plus one. This is because indices count from 0.
It is the list.get(i) that causes the problem.
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How to use Vector or other ArrayList etc to store my JTree??
How to use Vector or other ArrayList etc to store my JTree??
Dear friends,
I have following I posted before, but not get satisfactory answer, so I modify and repost again here.
I have following code can add classes and students in the JTree,
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import java.awt.Container;
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import javax.swing.JPanel;
import javax.swing.JScrollPane;
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addPhilosopher();
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inputPanel.add(removeButton);
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| 1.Peter
|---CS--- 2. Nancy
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Root(University): -------|---Math- 1.AAA
| 2.BBB
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|
|---Chemistry- 1. DDDThanks a lot
Good weekendsyou can't directly store a tree in a list.Ummm... Just to be contrary... Yes you CAN store a tree in a table.... In fact that's how the windows file system works.
Having said that... you would be well advised to investigate tree data-structures before resorting to flattening a tree into a list.
So... Do you have a specific requirement to produce a List? Your umming-and-erring about Vector vs ArrayList makes it sound like you're still at the stage of choosing a datastructure.
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Hello,
Can I use vectors in entity and store them in Tables directly as binary objects.I have tried making that bean but facing problem in retriving data from table using EJB-QL.Here are code snippets:
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rest other methods omitted
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public CartRemoteInterface findByPrimaryKey(String pk) throws FinderException, RemoteException;
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I am using Cloudscape as Database.
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Mikes Project2.vi 131 KB
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