OpendTect User Documentation version 4.2
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4.13. Annotations

With this option, you can draw arrows, load images, and write text on the display window by right clicking in one of the items in this tree.



Arrow: You can store the arrow groups, change the properties, lock-unlock, and remove them by right clicking on this element.


The arrow properties can be change by right-clicking on the newly inserted arrow group and selecting the properties from the pop-up menu. In the arrow properties, arrow type (top, bottom or both heads), color, width and size are adjusted.


Arrow style properties

Image: Once you have selected an image, you can then store, resize, lock-unlock, and remove it by right clicking on this element.

Text: You can add text by creating a text group. When a group is created, you can add multiple text annotations by clicking on an element (inline/crossline/timeslice/horizon) that is displayed in a scene. The text will be added at the clicked position. After clicking, write the text in the pop-up text box. The text can be modified from the scene by right clicking on the inserted text annotation and selecting Change text option from the pop-up list menu. Moreover, the text position can be adjusted in a 3D view. This is done by using the horizontal and vertical anchors (two sided arrow head) that are available in the interact mode. Use left mouse button to click on the anchors to move and relocate the text position. Text can be moved vertically, horizontally, or it can be rotated. Repositioning is also possible by clicking and changing the position pick. For details see the figure below. If one wants to remove the annotation, use CTRL+left mouse click on the annotation's pick (yellow circle).


Add a new annotation group.

Changing the position of the annotation
Text - Pop-up Menu
The main element-Text annotation contains two pop-up menus:
The text group pop-up menu can be launched by right clicking on the text group name.

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