I have a line chart. When i select january to july, the dimension date shows only until 24/04. For show until 25/07, i have to increase the width or enable X axis scrollbar. But i want to keep the same size and disable X axis scrollbar.
Just made a sample test data here, and without any filters it shows me all days on my datamodel (just made a model from April to July and the expression is just sum(value) for dummy data), so i'm assuming that either your data is being filtered to only show those days, or you're limiting that on the chart elsewhere (through set analysis on the expression or something like that).
Other possible hole is that your data doesn't have all days as rows, so when you apply the expression, it creates "gaps" for your days, they're not continuous on your chart.
Try creating a bar chart from scratch and use the same expression and see the result.
My example gave me the following:
That's one ugly chart on my opinion, since plotting all the days will get some really bad interpretation, I'd advise using the x-scroll bar for 30+ results.
I wouldn't be able to tell which point of the chart is for which day, but that's me .