3.15 The generate spectra from interpolated lines window

This window is for generating a spectrum that is equivalent to an interpolated line that you have drawn (or are about to draw) on the plot. Such lines can then be subtracted to or from, or divided into the current spectrum, thus providing a way to background correct a spectrum using a hand-drawn line.

Command Buttons

• Draw Curve Start an interaction in the plot window for drawing a curve. This is equivalent to selecting the Drawing mode-> option in the Graphics menu. Different types of interpolated lines can be selected first in the Curve type menu. The default is hermite a type of spline that attempts to connect points in a similar way to a hand-drawn curve.
• Generate Generates an actual spectrum from your interpolated curve and then displays it, along with any subtracted or divided spectra, in the plot.
• Generate (Replace) Same as Generate, except that if you’ve opted to subtract or divide the curve into the displayed spectrum, then that spectrum will be removed and you’ll only see the subtracted and/or divided result. If you haven’t opted to subtract or divide then the results are exactly the same as for Generate.
• Reset Removes any spectra that you’ve generated from the plot and global list.
• Reset (Replace) Same as Reset, but it also restores the spectrum removed in by the first Generate (Replace). Effectively undoes a Generate (Replace).

Accelerator keys

• Control-d Start interaction to draw a curve.
• Control-g Generate a spectrum from the drawn curve.
• Control-p Reset interface undoing a Generate (Replace).
• Control-r Reset interface clearing all new spectra.
• Control-i Delete any new spectra.
• Control-w Close the window.
• F1 Display help on SPLAT-VO.
• Shift-F1 Display help on window.