The Peak Table

The Peak Inspector is quite useful at getting detailed information about one peak (or a few, by using multiple inspectors), but it is fairly useless at getting the big picture. For that you'll want to use the Peak Table to display all the peaks in a specified peak list.The Peak Table is displayed by choosing the Peaks - Show Peak Table menu item. You can have multiple Peak Tables operational, to add additional ones choose Peaks - Add Peak Table menu item.

The most useful feature of the table is the ease with which the displayed information can be sorted by the values in one or more columns. Just click on a column header to sort by that column. Click a second time to reverse the order of sorting, and a third time to revert to the unsorted state. You can do secondary sorts on as many additional columns as you would like. After selecting the first (primary) column, hold down the Control key while clicking any additional column headers. Sorting by intensity provides an easy way to remove weak peaks. Sort the peaks, then select a range of peaks from the weakest to that with the maximum intensity you wish to remove. Then click the Delete button (Skull & Crossbones). All the peaks marked for deletion will now be colored in red and will be permanently removed if you compress the peak list. The Delete button is really toggles the deletetion status flag. Any peaks not marked for deletion will be so marked, any already marked will be "unmarked".

By default, the peak intensity, peak volume, and the chemical shift and label for each dimension are displayed. Scripting level, commands are available to provide for customized column display. For example, to change the table so that it shows the peak id, chemical shifts, peak widths, and the comment field, use the following command in the NMRViewJ console: peakTbl header "id ppm width comment" Note, when using this command you don't need to specify the individual columns for those data values that are associated with individual dimensions. In this example, we only listed "ppm" once, but got the chemical shift columns for all three dimensions of this list.