====== Projecting a marker onto a line ====== === Projecting a marker onto a line === There are many cases in which it is convenient to project a marker onto a line. One particularly useful scenario is to project a marker placed laterally on the shoulder at the level of the humeral head onto a line passing vertically through a marker on the acromium. To create the landmark, switch to Model Builder mode and click on **Add a New Landmark**. |**Create Marker_Projected:**\\ \\
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  1. Click **Landmarks** button
    2. \\
  2. Click **Add New Landmark** button
    3. \\
  3. Create Landmark: //Marker_Projected//\\ \\ |

       **Landmark Name:** //Marker_Projected//\\

    \\ \\

       **Define Orientation Using:**\\    **Starting Point:** //Marker1//\\    **Ending Point:** //Marker2//\\    **Lateral Object:** //LEAVE BLANK//\\    **Project From:** //Marker3//\\

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    4. \\
  4. **Do NOT Check:** //Offset by Percent (1.0 = 100%)//
    5. \\
  5. **Check:** //Calibration Only Landmark//
| | \\ This will create a marker that lies along the vector from Marker 1 to Marker 2.