How to show spectrogram in grafana?

Hello,

Please tell me how to visualize spectrogram with grafana. that data is taken from InfluxDB.
I’ve seen in Heatmap doco that bucket value is a Z-axis value:

I wish that the input of the grafana will be vector from matplotlib.pyplot.specgram, hopefully can be inserted to InfluxDB:
https://matplotlib.org/stable/api/_as_gen/matplotlib.pyplot.specgram.html

The matplotlib.pyplot.specgram returns this array:

spectrum2D array
Columns are the periodograms of successive segments.

freqs1-D array
The frequencies corresponding to the rows in spectrum.

t1-D array
The times corresponding to midpoints of segments (i.e., the columns in spectrum).

Thanks a alot.