bug: Head Circumference is missing from the vitals display chart due to incorrect unit conversion

[juggernautsei]

Describe the bug

This is what was shared with me after we installed v7.0.1 (1)
We have 3 graph that are always checking by the Dr. Chen

1.   The height is plotted properly now
   

2.   The weight red dots need to be fixed to a bigger size like the dots in height graph
   

3.   **The head circumference is does not plot on the graph ,** this stature graph only seems to show on the old patients ( eli yates 8 yrs old) but not with new borns.
   

To Reproduce

Steps to reproduce the behavior:

1. Add a '....'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

show readings on the chart.
I have tested this in the demo site and the readings don't show on the chart their either.

Client configuration

• Browser: All
• OpenEMR version: 7.0.1 (1)
• Operating system: Ubuntu 22.04

[stephenwaite]

hi @juggernautsei , pretty likely it's because the birth section of chart.php wasn't refactored for the metric locale.

probably need a function to convert cm to in when $head_circ is defined