xyz power spectral intensity plot

[navneet]

Hello forum,

I am acquiring 8 signals and sending them to the power spectral density subVI. I can put this out on a waveform graph and clearly observe the power spectral density of each signal. I wantedt to know if there is a way to have this plotted on an intensity graph, where the signal number is the x-scale, frequency is the y-scale, and the signal strength (in dB) is the intensity (z-scale). If not possible then is there a way to save the calculations from the power spectral density subVI in an excel spreadsheet where each column will represent the frequency and it strength?

cheers,

[johnsold]

Intensity graphs use the indexes of a 2D array of data as the X and Y axis values.

So your signal number can easily be the x-axis.  If your data frequencies are integers, they can be used for the y-axis. If not, you can still use the index of the spectral density array as the axis.  To scale it as frequency you would need to hide the integer axis and place a slider or some similar control to represent the actual frequencies.  It can be tedious, but it is not particularly a difficult thing to do.

Lynn