Only Show Power BI Matrix value at Row Grand Total - matrix

Is there a way to have a Power BI matrix value ONLY show on the totals?
I have them shrunk so they're not seen, but this rolls every week so it becomes a weekly task to hide.

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Trying to get correct grand totals for my measures

I'm calculating margin impact and the grand total is not the sum of the column. Below is the calculation measure:
=([CY_MARGIN]-[PY_MARGIN])*SUM(CYPY[CY_VOL])
I've tried adding sumx(values( to the calculation but I'm still not getting the correct column sum..

How to calculate the ratio between the grand total of two metrics on Google Data Studio?

I created a table on Data Studio that shows the columns:
A: Date
B: 1st metric (number)
C: 2nd metric (number)
D: custom formula to calculate the ratio between the 1st and 2nd metric (percentage)
Then I checked the option to show the Summary Row that sums all the values of each date. But in the column D I don't want it to calculate the sum of the values in column D (nor the average of the values), instead, I want the ratio between the sum of the values of column D and C. How to achieve that?
To have the calculated field correctly in the total, you have to make sure to aggregate your calculated field. To do so, use 'sum()' in your calculation.
That would be this formula:
sum(total sales)/sum(gross sales)
I hope this answers your question!

In PowerBI, how to expand row values in a matrix and keep showing subtotals

In Power BI, I have the next problem. I have a matrix with subtotals and I want to expand one of the subtotals and continue seeing the value of the rest subtotals, but they disappear when I expand one of the subtotals. How can I do to continue showing those values?
Original Matrix
Expanded Matrix
I have highlighted in yellow where I would like to continue seeing the subtotal (like in the original matrix when it wasn't expanded).
PS: I have the option Row Subtotals On
Thanks!

What is the most appropriate distance measure for e-commerce data (explained in details below) to apply nearest neighbour algorithm?

I have a dataset of e-commerce website. The data is arranged in a matrix where number of rows are same as number of transactions (set of products bought) and number of columns is same as total number of products available on the website. Thus each [i, j] cell of a matrix is either 1 if product j was bought in transaction i or 0 otherwise. Now when a new transaction comes, I want to find k nearest neighbours for this transaction. What would be the most appropriate measure for such data? e.g. even if data is binary (1/0), hamming distance won't make any sense.

how to calculate sum of an average field in crystal report

I have a field that calculates an average per row (Avg_Amt), it gives a correct output. My problem is how can I calculate the total summary of the average field (Avg Amt) then place it to the report footer.
Thanks & Best Regards.
Create 2 formula fields one for average and one for sum and insert this formula the first one
formula = Average ({Feild Name})
in the second formula from the report fields drag and drop the average formula and add the sum operation like :
formula = SUM({#Average})
If it is a straight average, use the sum wizard to add a sum for each field, then insert a formula field see below, this will actually get you to the accurate basis points average
(Sum ({#Field_1})/Sum ({#Field_2}))*100

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