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| ControlPoint``s are used in surface construction. Every subject has an associated control.dat file in their tmp directory; this is the list of ControlPoint``s, in TalairachSpace, that is read in to TkMedit automatically upon start. | ||Up to TkMeditGuide||Back to [[../TkMeditAnatomicalVolumes| TkMeditAnatomicalVolumes]]||Continue to [[../TkMeditSelectionsLabels| TkMeditSelectionsLabels]]|| = Control Points = Control points are used in surface construction. Every subject has an associated {{{control.dat}}} file in their {{{tmp}}} directory; this is the list of control points, in Talairach space, that is read in to TkMedit automatically upon start. |
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| Control points appear as green cross hairs in the Display Window. They can be turned off by unchecking '''Views->Control Points'''. | |
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| ControlPoint``s appear as green cross hairs in the Display Window. They can be turned off by unchecking '''Views->Control Points'''. | == Editing == |
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| Control points can be edited with the Edit Control Points tool, which can be activated by pushing the {{attachment:Icons/TkMedit/icon_edit_ctrlpts.gif}} button on the Main Toolbar, by choosing '''Tools->Edit Control Points''', or by pressing the 'c' key when the mouse is in the Display Window. | |
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| == Making and Deleting Control Points == ControlPoints can be edited with the Edit Control Points tool, which can be activated by pushing the attachment:Icons/TkMedit/icon_edit_ctrlpts.gif button on the Main Toolbar, by choosing '''Tools->Edit Control Points''', or by pressing the 'c' key when the mouse is in the Display Window. To make a new ControlPoint, click anywhere in the Display Window with mouse button 2. To remove a control point, click near it with mouse button 3. Button 3 will remove the closest control point to the voxel clicked, within 3 voxels. |
To make a new control point, click anywhere in the Display Window with mouse button 2. To remove a control point, click near it with mouse button 3. Button 3 will remove the closest control point to the voxel clicked, within 3 voxels. |
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| Whenever a new ControlPoint is made, it is automatically written to the control.dat file. However, removed ControlPoint``s are not removed from the file until you choose '''File->Save Control Points''' or quit normally with the '''File->Quit''' command. | Whenever a new control point is made, it is automatically written to the {{{control.dat}}} file. However, removed control points are not removed from the file until you choose '''File->Save Control Points''' or quit normally with the '''File->Quit''' command. |
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| In normal cases, the {{{control.dat}}} file is saved in the subject's {{{tmp}}} directory, so the FreeSurfer programs that use the file know where to find it. However, if you used the {{{-f}}} option to load a volume file by name, not specifying a subject name and directory, you will see a warning when you try to write a control point, and the file will be saved in the current working directory. This file can then be moved to a subject's {{{tmp}}} directory later. |
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Continue to TkMeditSelectionsLabels |
Control Points
Control points are used in surface construction. Every subject has an associated control.dat file in their tmp directory; this is the list of control points, in Talairach space, that is read in to TkMedit automatically upon start.
Display Options
Control points appear as green cross hairs in the Display Window. They can be turned off by unchecking Views->Control Points.
Editing
Control points can be edited with the Edit Control Points tool, which can be activated by pushing the 
button on the Main Toolbar, by choosing Tools->Edit Control Points, or by pressing the 'c' key when the mouse is in the Display Window.
To make a new control point, click anywhere in the Display Window with mouse button 2. To remove a control point, click near it with mouse button 3. Button 3 will remove the closest control point to the voxel clicked, within 3 voxels.
Saving
Whenever a new control point is made, it is automatically written to the control.dat file. However, removed control points are not removed from the file until you choose File->Save Control Points or quit normally with the File->Quit command.
In normal cases, the control.dat file is saved in the subject's tmp directory, so the FreeSurfer programs that use the file know where to find it. However, if you used the -f option to load a volume file by name, not specifying a subject name and directory, you will see a warning when you try to write a control point, and the file will be saved in the current working directory. This file can then be moved to a subject's tmp directory later.