panel set twindow_function ay
The AY function returns the rotational displacement of the I_MARKER (i1) about the y-axis of the J_MARKER (i2). This value is computed as follows: Assuming that rotations about the other two axes (x-, z-axes) of marker i2 are zero. Then AY is the angle between the two x-axes (or the two z-axes). Mathematically, AY is calculated as:
AY = ATAN2 ((dot_product_of zi1 xi2),(dot_product_of zi1 zi2))
where zi1 is the z-axis of marker i1, xi2 is the x-axis of marker i2, and zi2 is the z-axis of marker i2.
This type of measurement is also referred to as "shadow angles".
Format:
panel set twindow_function ay |
|---|
i_marker_name = | existing marker |
j_marker_name = | existing marker |
Example:
panel set twindow_function ay & |
|---|
i_marker_name = | marker_3 & |
j_marker_name = | marker_6 |
Description:
Parameter | Value Type | Description |
|---|
I_marker_name | Existing marker | Specifies an existing marker used as the I_MARKER (i1) in the evaluation of the function. |
J_marker_name | Existing marker | Specifies an existing marker used as the J_MARKER (i2) in the evaluation of the function. |
Extended Definition:
1. You may identify a marker by typing its name or by picking it from the screen.
If the marker is not visible on the screen, you must type the name.
You may also find it convenient to type the name even if the marker is displayed.
If you created the marker by reading an Adams data set or graphics file, the marker name is the letters MAR followed by the Adams data set marker ID number. For example, the name of Adams MARKER/101 is MAR101. If you created the marker during preprocessing, you will have given it a name at that time.
If a marker is available by default, you may identify it by entering only its name. If it is not, you must enter its full name. To identify a marker under a different part, for instance, you may need to enter the model and part names as well. For example, you may specify marker 'pivot' from model 'links', part 'lower_arm' by entering ".links.lower_arm.pivot". If you type a "?", Adams View will list the markers available by default.
You must separate multiple marker names by commas.
If the marker is visible in one of your views, you may identify it by picking on it.
You need not separate multiple marker picks by commas.