# Dashboards

- Auditing Dashboards
- Correlate metrics and events using dashboard template variables
- False spikes sometimes appear on my `sum:` graph
- Function Example - Visualize the differences using top() by mean / max / min / area / l2norm
- How can I determine the plotting granularity of the charts for the different time windows?
- How can I graph host uptime percentage?
- How can I graph the percentage change between an earlier value and a current value?
- How can I set up custom units for custom metrics?
- How do I apply graph smoothing?
- How do I change the name of a Dashboard?
- How do I do arithmetic with grouped metrics?
- How do I edit the graphs?
- How do I make a dashboard (ScreenBoard or TimeBoard) read-only?
- How do I overlay events onto my dashboards?
- How do I see the number of hosts I'm monitoring?
- How do I use arithmetic for my time series data?
- How does Datadog define a time series?
- How is data aggregated in graphs
- I see unexpected drops to zero on my graph, why?
- I'm switching between the sum/min/max/avg aggregators but the values look the same?
- Inconsistent sum aggregation between different time windows on graph
- Interpolation & the fill modifier explained
- Is there a way to share (or revoke previously shared) graphs?
- Performing Metric Arithmetic in Graphs / Monitors
- The same color is used twice in my graph!
- There are too many lines on my graph, can I only display the most important ones?
- Treemap graph/visualization - can I use this elsewhere?
- Usage of the fill() function
- What does the "sum:" mean in front of the metric in a query?
- What functions can I apply to my dashboard charts?