I am working on the grafana which connect the PostGreSQL database. I want to plot vertical line to x-axis which connect the point (just like x-intercept). I plot the points on graph but can't find any option/solution to plot the vertical line.
The x-axis is timestamp and y-axis is values.
I want the line similar to that picture (same as green line)
You could use annotations to show a vertical line with the timestamp driven by a different query. These are configured in the dashboard settings - not on the panel.
https://grafana.com/docs/grafana/latest/dashboards/build-dashboards/annotate-visualizations/
The thing you are looking for are 'Annotation' Queries:
For instance, I have a graph where I want to show vertical lines at 6am every day.
You have to add an 'annotation query' on your dashboard object.
for my logs of
2023-08-31T00:00:16+0000 849
2023-08-31T06:00:16+0000 848 <---- annotation only on this one
2023-08-31T12:00:16+0000 848
2023-08-31T18:00:16+0000 848
my query would look like:
{filename="/var/log/my_logs.log"} |= `06:00`
(The time difference is because I am in EST, and the time is UTC)
Tutorials:
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