Scan Interval is longer than averages, showing dot

Dear bart2puck

Are you talking about the three graphs on the right-hand side? When the scanning interval is too sparse, PRTG draws dots instead of a continuous line.

Please, always draws line!

Dear MAA

We intentionally don't always draw lines because such graph would suggest the existence of data when there is no data.

While the always-line-option would look nicer, we decided to go for the accuracy.

The dots make the graph very hard to read.

• Our sensor data is generated every 10 minutes, so that's the interval we use
• the Live Data graph shows a normal line graph with the area under it shaded
• the 2-day view shows dots, which are hard to read
• the 30 day view shows a normal line graph again

It makes no sense that only the 2-day graph is dots. I could maybe understand the live data, but it would still be hard to read (even harder actually)

The way these particular graphs are displayed depends, on the one hand, on the scanning interval being used and, secondly, on the values defined for the graph in case under the administrative user interface settings. If the interval used for the graphs is shorter than the actual interval used for the sensors, the graph in case will be rendered using points rather than lines. In order to change this you would either need to change the scanning interval or adjust the graph settings (recommended).

I've looked around but don't see anything regarding lines/dots in the graph settings. Pointer please?

Hello Kyle, could you please explain in more detail what exactly would you like to set regarding lines/dots in graphs?

Dear Paessler support,

We ran into the same issue. Depending on the values shown in the graph, let's say the "character" of the data, it can be very hard indeed to interpret them, especially when they're scattered all over the place!

Suggestion: Would it be an idea to additionally draw thin vertical lines from the base of the graph to each of the dots, so it gives the impression of a filled area, but is at the same time a clear difference to the usual line graph, showing the intermitting character of the data?

Thanks in advance!

Hello,

Thank you for your suggestion. I agree that it can be useful, however I am afraid that there are no plans to add such feature. Any change in graph displaying would require a lot of effort of coding, in an already highly complex area of our PRTG code. Beside that, we can consider implementing features/ improvements that are a benefit for a large number of users.

Best regards

This is important for me as well.

This probably won't make its way into PRTG - sorry!

What is the maximum scan interval to show the graph?

The maximum scan interval PRTG can show is either 1s or 10 days. They will appear either as line or dotted, depending on what's configured under Setup | System Configuration | Monitoring | Graph Settings. But you should not make the sensor interval depend on the way its displayed on the graph (as it will drive you nuts, probably ;) ). What sensor are we talking about here?

PRTG Scheduler | PRTGapi | Feature Requests | WMI Issues | SNMP Issues

Kind regards,
Stephan Linke, Tech Support Team

Hey Stephan,

I am trying to fiigure out how i can get the line showing instead of the dots when generating a monthly report. My sensors that scan every 10 minutes have a line for example, but the sensor that is running once per day is showing dots for a monthly overview, but a line for 120 days overview. So what scan interval should be configured to show a line in a monthly overview?