Most parameters effecting the display mode of spectra are specified in the spectral attributes panel. Spectra may be displayed as 1D vectors or as 2D slices. The 1D vectors can be displayed in a horizontal orientation (1Dx) or a vertical orientation (1Dy). These display modes (1Dx, 1Dy, and 2D) are selected with the pull down choice in the spectral attributes window. Also, in 2D contour plot mode you can display a 1D vector slice superimposed on the contour plot (seed 2D mode below).
In mode 1Dx, the two x values specify the plot limits of the vector. The y, z and z2 values specify the particular vector in the 2,3 or 4D matrix. If a range of values is specified for y, z or z2, all the vectors between those values will be drawn. In mode 1Dy, the two y values specify the plot limits of the vector. The x, z and z2 values specify the particular vector in the 2,3 or 4D matrix. In the 1D modes the value specified in the Scale entry, specifies the intensity difference between the maximum and minimum axes. The value specified in the xoffset entry, specifies the point (as a fraction from zero to one, at which a value with intensity zero will be displayed. For example, in mode 1Dx, with Scale set to 100 , and Zero set to 0.5, the y-axis range is from -50 to +50. With Scale set to 100, and Zero set to 0.0, the y-axis range is from 0 to 100.
In 2D mode the spectra are displayed as contour plots. Controls are available to specify the intensity of the lowest contour that will be drawn, the ratio of intensities of subsequent contours, and the maximum number of contours to display. The x values specify the plot limits along the x-axis. The y values specify the plot limits along the y-axis. In 2D mode "real-time" slices can be displayed that track the position of crosshair cursor 1 (the black crosshair). Slices can be in the x, y, z or (z2 NOT YET) dimension of the spectrum. X and Z slices are drawn parallel to the X axis of the window. Y and Z2 slices are drawn parallel to the Y axis of the window. The slice is continuously updated as the cursor is moved.
For 3 and 4D spectra the specific planes to be drawn are specified with the z and z2 (for 4D spectra) values. If a range of values for z and/or z2 are specified, all planes between the two specified values (inclusive) are drawn. The file dimensions and the display dimensions can correspond in any desired manner. The pull down choice box following the x and ydisplay entries is used to specify which dataset dimension is specified on the particular axis.