I found a few similar topics about line formatting and my idea is to combine all ideas and votes into one. Formatting options for line chart types: - Edit the line width (thickness), Dash type (so...
Exactly what Billy Birkins said. Just show the markers. This is crazy that we can't do this yet. I love Power BI but there are still a few simple things like this that aren't dealt with. It looks like there are a couple of ideas for this already: https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/36619846-show-marks-in-continuous-data and https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/37852705-mark-in-line-graphs-for-continuous-variables and https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/37286404-display-marker-for-line-and-column-continuous-ax
