Creating a histogram over a Power BI measure - powerbi

Question

Since Microsoft decided to deprecate the Histogram visualization in Power BI it became a problem to visualize distributions in this application.
I solved this problem in the case where the histogram is over a table column: using a clustered column chart with the value as the X axis and the count as the Y axis (It is also possible to add range bins to group together different values).
However, if I have a measure, this approach will not work. For example, If I have a table of movie ratings (with columns 'movieId', 'userId', and 'userMovieRating') I don't know how to create a histogram of the average ratings for each movie. If I try the approach that was described above, Power BI will not even let me use the measure in the X axis.
sample data:
movieId
userId
rating
m1
u1
5
m1
u2
3
m2
u1
2
m2
u3
4
m2
u4
3
m3
u2
3
m3
u3
3
m3
u5
3
expected output:
Average rating
number of Movies
4
1
3
2
Can you suggest a way to achieve this without creating additional tables?

Answer 1

movies table looks like this as per your sample data.
Create a measure as follows:
Ave Rating = AVERAGE(movies[rating])
Create a new disconnected table as follows:
Average Ratings =
VAR maxRating = MAXX(VALUES(movies[movieId]), [Ave Rating])
RETURN GENERATESERIES(0,maxRating,1)
which produces the following:
You need to use generate series for a proper histogram as some averages (0,1,2) will have a count of zero and you want these to show too.
Create a column chart. On the x axis, add the column from your newly created table ensuring show all values is selected.
On the y axis, add the following measure:
Measure =
VAR cursor = SELECTEDVALUE('Average Ratings'[Value])
VAR segment =
FILTER(
ADDCOLUMNS(
SUMMARIZE(movies, movies[movieId]),
"#aveRating", [Ave Rating]
),
[#aveRating] = cursor
)
RETURN COUNTROWS(segment)
Finished result: