jeff-luszcz/aistropoalert

uses AIS-Catcher and AIS signals to detect possible Tropospheric Ducting Events and post to Mastodon

aistropoalert's Issues

[ not a bug ] just suggestion

Hi,

I modified the script to add:
-shipname if available
-bearing
and to have variables in uppercase.

Here are examples:

./AISTropoAlert.sh 
Furthest ship MMSI:246436000 SHIPNAME:"DUTCH EMERALD" bearing:289 seen was 117.997429 miles away further than 30 miles away!

$ ./AISTropoAlert.sh 
Furthest ship MMSI:310825000 bearing:12 seen was 92.069016 miles away further than 30 miles away!

Here the lines modifed:

MAXDIST=`curl -s $URL/ships.json  | jq --arg dist $DIST  '.ships[] | select(.distance>=($dist|tonumber)) | .distance' | sort -nr | head -1 `
#echo " maxdist $MAXDIST "

#curl -s $URL/ships.json | jq  '.ships[] | select(.distance>=61.497009)| .mmsi'|sort -nr | head -1
MMSI=` curl -s $URL/ships.json  | jq --arg maxdist $MAXDIST '.ships[] | select(.distance>=($maxdist|tonumber))| .mmsi'`
#echo " mmsi $MMSI"

SHIPNAME=` curl -s $URL/ships.json  | jq --arg maxdist $MAXDIST '.ships[] | select(.distance>=($maxdist|tonumber))| .shipname'`
#echo " shipname <$SHIPNAME>"

BEARING=` curl -s $URL/ships.json  | jq --arg maxdist $MAXDIST '.ships[] | select(.distance>=($maxdist|tonumber))| .bearing'`
if [ "$SHIPNAME" == '""' ]
then
        echo Furthest ship MMSI:$MMSI bearing:$BEARING seen was $MAXDIST miles away further than $DIST miles away!
else
        echo Furthest ship MMSI:$MMSI SHIPNAME:$SHIPNAME bearing:$BEARING seen was $MAXDIST miles away further than $DIST miles away!

fi

regards
Phil

Nice app, I’m considering integrating this with VesselAlert

Hi there,

I came across your short script/app via the AisCatcher website. Great idea! I’m considering to incorporate it into my vessel notification app/container called VesselAlert , of course with proper attributions under your GPL license. One of the improvements I’m thinking of is to keep a rolling (12-hour for example) max distance and only send a notification if the actual distance is > minimum distance and if it’s at least (say) 25 nm further than the last measured max distance. That way the notifications can be limited to only meaningful ones.

This would be a great add to VesselAlert and easy to implement as I already have Mastodon and Discord notifications. (See for example https://airwaves.social/@bostonharbor )

Thanks again; feel free to close this (non-) issue after you read it.

Ramon

the ships function won't work correctly

Hi,

The SHIPS function won't work correctly with sort -r, it needs to be sort -nr for numeric sort or weird things can happen, like 9 miles coming before 10 miles.