adding zero values to a matrix heatmap

[AndrewPF]

I have created a heatmap from a matrix: 

but I want the squares without values to have zeroes. 

Is there any way of accomplishing this, other than adding "zero" rows into my test data? 

[AndrewPF]

I have created the measure exactly as described, but it still doesn't work.  I don't understand how it can populate the cells where there are no rows in the original source data. 

[AndrewPF]

I don't think I understand.  I don't have any rows in my data where, for example, Impact = "4 - Likely" and Likelihood = "4 - Severe".  The values are just COUNT = 1 on each row in the source data and I am summing them in the matrix with Impact as the X-axis and Likelihood as the Y-axis.  Creating a new [COUNT] + 0 measure won't create any values where there are no existing values. 

[Greg_Deckler]

@AndrewPF Create a measure:

Measure = SUM('Table'[COUNT]) + 0

For the blank areas, the sum will return BLANK and then when 0 is added, you get 0. Adding zero to sums that return numbers (not blank) does not change the number.

[Greg_Deckler]

@AndrewPF Take your measure and add +0 to the result that is returned.