![]() ![]() ![]() the nearest point on the ruler to the mouse position is at image number 8 and the estimated time for that position is 21:06:46. In the screen print above, the mouse position is used to interpolate between the start and end image numbers (1 and 10) and the start and end times (21:02:31 and 21:08:07) entered in the Control window to produce the tooltip information "8 21:06:46", i.e. The information always includes a sequential image number and can optionally include a time or a FITS file name if FITS files have been dropped on the Control window FITS files area. Image information can be entered into the Control window Settings area so that when the mouse hovers over the Screen Ruler window, information indicated by the mouse position is displayed as a tooltip next to the mouse cursor. The ruler width and colour are adjustable from the Control window Settings area. Hold Ctrl while moving the Screen Ruler window to leave the Ruler stationary.Move the Screen Ruler window by dragging the title bar with the mouse moves the Ruler along with the window.Move the entire ruler when the ruler is locked by pressing the arrow keys.Move the ending point when the ruler is unlocked by holding Ctrl and pressing the arrow keys.Move the starting point when the ruler is unlocked by pressing the arrow keys.holding Shift and clicking the right mouse button.holding Ctrl and pressing the Enter key, or.Set the ending point by positioning the mouse at the required place and:.holding Shift and clicking the left mouse button.Set the starting point by positioning the mouse at the required place and:.Drag a fresh line by holding the left hand mouse button while moving the mouse.There are a number of ways to draw the ruler or change its position: The ruler is a straight line that can be drawn on the semi-transparent window. The parts of the Screen Ruler (on the left) are shown here, as well as the source of the Mouse information coming from the Control window on the right. It contains a moveable and resizeable line used as a ruler to read off measurements from underlying images. The Screen Ruler window is a resizeable, semi-transparent window that can be placed over other windows.
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