I am reading
Part III MULTIRESOLUTION ANALYSIS & THE CONTINUOUS WAVELET TRANSFORM
by Robi Polikar
The author explains about the following fig and says;
Note that boxes have a certain non-zero area, which implies that the value of a particular point in the time-frequency plane cannot be known. All the points in the time-frequency plane that falls into a box is represented by one value of the WT.
I am unable to interpret this fig and also that why value of a particular point in the time-frequency plane cannot be known. I can always intersect two lines one passing through a particular value of t and another through f. The intersecting point will give me exact location of frequency at particular time (and V.V). I am not able to understand what thsi diagram is all about and what is its significance?