How to print several different spectra onto one page

October 8, 1998, IU NMR Facility, prepared by UWZ

Outline:
The following steps are involved:

  1. Work up the first spectrum in different experimental buffers.
  2. Determine the region you wish to plot.
  3. Set the spectral heights.
  4. Repeat steps 1 through 3 for the next spectrum.
  5. Send the plot to the printer.
1. Work up the spectra in different experimental buffers (exp1, 2, ...)
Call up your first spectrum (let's use the one you want at the bottom of the plot) and work them up in the usual way (i.e wft, phase, baseline correct if you wish).

2. Determine the region you wish to plot
Set the cursor brackets around the areas you want to print if you wish to expand on the spectra. You can do this in two ways:

  1. You may decide you want a well-defined ppm region, for example from 7.0 ppm to 2.0 pm. Then you type cr=7.0p (left ppm value) and delta=5.0p (difference between right and left edge in ppm). Then click on expand.
  2. You can do this manual by using the left and right mouse button. Because it is important to get the top and bottom spectra onto the same scale, type cr? and delta?. These values will be displayed in Hz. Write down these values for the other spectrum. Finally click on expand.
3. Set the spectral heights
You can manually set the vertical scale by using the middle mouse button, so that the spectrum fills half the window. If you want all peaks contained in half of the window, you can type vsadj vs=vs/2.

4. Repeat steps 1 through 3 for the next spectrum
Got to the next experimental buffer with jexp2. Call up the spectrum and work it up in the usual way. Now expand the spectral region using the parameters you determined in step 2. Type cr= and delta= . Adjust the vertical scale in the same way as above, for example with vsadj vs=vs/2. Now set the vertical offset by adjusting vp. vp=80 seems a useful value.

5. Send the plot to the printer
Click on Main Menu --> Plot --> Spectrum (and Scale if you want the top spectrum to have a scale) Do not click on Page! Then type jexp1 to join the first experiment. Type ds and dscale to make sure everyting is still to your liking with the bottom spectrum. Then send this to the printer with Main Menu --> Plot --> Spectrum --> Scale --> Page. Your spectrum should come on the normal printer.

Comment: You can plot more spectra on the same scale. Simply perform steps 1-3 on the third spectrum and change vs and vp correspondingly. An alternate method to plot spectra above each other is to create a whitewash plot (see "How to make a whitewashed stacked plot".)

Bact to NMR Facility Users Guide
Back to NMR Facility Home Page
Send comments to chemnmr@indiana.edu

Last updated: October 13th, 1998
URL: http://nmr.chem.indiana.edu/NMRguide/print/2spec1page.html
Copyright 1996, The Trustees of Indiana University