Can't plot Cartographer frequency in diagnostics

[ali1234]

Fluidd Version

1.35.0

Browser

Firefox

Device

Desktop PC

Operating System

Linux

What happened

I enabled the diagnostics section and added a panel for Cartographer coil frequency (ie raw probe readings).

When viewing the resulting graph, the tooltip shows the correct values, which constantly update, but the line itself is always drawn at 12:

What did you expect to happen

The line should be drawn at about 2400000, and it should change over time as the underlying values changes.

How to reproduce

I added a new panel, disabled left axis, and renamed the right axis to "Hz" with minimum and maximum left blank.

Then I added a metrics collector called "Frequency" for the Cartographer:

Clicking the test button shows the correct value.

Additional information

I also tried dividing the value by 1000000.0 in the collector. This did not affect the height of the line on the graph, but did change the value in the tooltip.

The default panel showing velocity and flow works as expected.

[ali1234]

Update: I added Coil Temperature to the left axis, and now Frequency is rendered correctly, but Coil Temperature is always drawn at 12:

Also, I had to manually specify the axis range for frequency, because the auto ranging always seems to start at zero, which doesn't work well for very large values that don't change much.

[ali1234]

Update 2:

After some time, the graph started working correctly without me touching it. So this seems to be something to do with "empty" values on a brand new panel/metric?

[ali1234]

Confirmed, the patch fixes it for me.