Q&V Chart: limit number of categories

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Q&V Chart: limit number of categories #2770

Open urapadmin opened 3 months ago

urapadmin commented 3 months ago

The number of images per unit shows that a bar and a pie chart have too many categories to make any sense. So we need a new option to limit the number of categories:

      chart1:
        type: "bar"
        title: "#: image load by #(/$/constants/labels/unit)"
        categories: "unit id"
        values: "file"
        sort_by: "value"
        operation: "count"
        max_categories: 25
        threshold: 1

if max categories is given, the 24 categories with the highest value are shown while all others are summed up under "others".

urapadmin commented 3 months ago

Kiosk 1.6.2

a "category_threshold" setting sorts all categories into "other" that are smaller than the threshold
a "max_categories" allows only the x largest categories in the chart. The others are sorted into "others"
the image load chart shows this: Only 25 categories an only categories that are at least 1.5 % of the whole will be shown. The rest is in "others"

luizaogs commented 3 months ago

If I just open the query I get the following graph, without "others":

If I then click on the arrows to expand the window, I can see others as the last item. If I then use the arrows to minimize the window, others shows up in the minimized version of the graph:

urapadmin commented 3 months ago

indeed. Very strange. Seems to happen only on first rendering. If I choose a different graph (instead of maximizing) and go back to the "image load by unit" I get "others".

Also the numbers are different if not wrong on first rendering.