Spectrum Window Navigation

Window Components and Views

Once the new spectrum has loaded, a new window, "window3" will automatically be created. This is a three-dimensional window with "1H" along the x and y axes and "15N" along the z axis.  A new window is created like this only if no existing window matches in isotopes.

Note that if you minimise or close a window you can get it back again by going to M: Windows: HN: window3 (or equivalent).

You can move around the spectra within the windows using several different inputs. To zoom in and out use the 'PgUp' and 'PgDn' keys, the middle mouse wheel (if you have one), or hold 'Shift', click the middle mouse button, and move the mouse up and down. If you zoom out from your spectra so that you can see their edge you will notice a dotted line which denotes their border.

You cannot zoom out further than the maximum size allowed in each dimension. To change this size open up M: Window: Axes and select the {Axis Types} tab (if it is not already selected). Each Axis Type has a Region, which can be edited by double clicking on the relevant cell.

To pan around the spectra you can click and drag the scrollbars at the edges of the windows, use the arrow keys, or click and drag on the spectra with the middle mouse button.

Now take a look at window2 and move the extra scrollbar at the very bottom of the window. - Left click and drag. This scrollbar is present on the 3D window to change the depth or plane of the spectra being viewed. On a 4D window there would be yet another scrollbar. To change the thickness of the displayed planes click and drag the side of the depth slider with the middle mouse button.

Staying in window2, click on [Spectra] at the top of the window. Here you will see two coloured buttons, one for each of the 3D spectra:

If you click the buttons you can independently toggle the contour displays for the two spectra on and off.

Setting Contours

To change contour settings click on the [Contours] button at the top of a window, try doing this in window3 for the newly loaded spectrum.  This lets you do simple adjustments.  The green arrows will raise or lower the contouring floor, while the +1/-1 will change the number of contours. The [Pos/Neg] button allows you to swap between showing just positive or just negative or both contour levels. Note that using these contour options only changes the spectra that are visible at the time within the window. If you click on the [More..] button you will bring up a more detailed contour level setting dialogue box.

Back to Course Day 1 of 3