Calculate wind using U and V GRIB components, NodeRed, JS

Updated 2022-11-28 !

In a former post I showed how to download and extract data from forecast GRIB files but avoided to handle if the wind direction and speed was declared as U and V components, vectors. 

In this post I will extract wind data from a GRIB forecast file and use the U V components to calculate, and display, wind speed and direction at a chosen point. The data is visualized as graphs in a NodeRed dashboard.

Normally, using charts in NodeRed, the timestamp is taken from the time when the input message is created but here I will use the timestamp from the forecast, loading the whole chart in one go.

Speedtest LAN and Internet/WAN, iperf3

Updated 2022-11-06 !

Sometimes I'm a little confused if it's the local network that is the bottleneck or if the ISP, Internet Service Provider, is slow.

In a former post I used 2 applikations to get the information, from both the local LAN and Internet, but on the other hand it maybe hade been nice with a more lightweight approach. 

From this post I got inspiration and discovered a nice little application "iperf3" which is available for several OS.