Line to Navaid HSI

[pve 0]

Hi all Made some code for HSI, line to navaid (737-NG etc). (A:NAV1 DME, nmiles) 3.4 * (L:HSI RANGE, number) 80 / / (A:NAV1 RADIAL, radians) (A:GPS GROUND MAGNETIC TRACK, radians) - (A:NAV1 DME, nmiles) 3.4 * related to zoom setting 1250 (L:HSI RANGE, number) 80 related to range setting 10 20 40 80 etc. This works great on all VORs with dme but what to do for non dme VORs and NDBs

[taguilo 33]

Paul,Never tried, but if (A:NAV1 DME, nmiles) returns 0, you can try by retrieving (A:HSI STATION IDENT, string); then searching fs9gps for that ident (taking care of duplicates), once found retrieve its Lat/Lon and then a simple fs9gps "geocalc" call using those values and your a/c Lat/Lon position should give you the distance.Tom

[pve 0]

Hi Tom I may be able to retrieve the lat & long but the geocalc maths goes right over my head!! Paul

[taguilo 33]

Hi Paul,Geocalc is a function embedded in fs9gps. It can be used in something like:(@c is fs9gps)'Ident' (>@c:IcaoSearchEnterChar) (* Navaid ident is send to gps search engine *)if found = (@c:IcaoSearchCurrentIcao) (>@c:FacilityICAO)and in the next gauge cycle, you get (@c:FacilityLatitude,degrees) (>@c:GeoCalcLatitude2,degrees)(@c:FacilityLongitude,degrees) (>@c:GeoCalcLongitude2,degrees) (A: Plane (or gps) Latitude,degrees) (>@c:GeoCalcLatitude1,degrees) (A: Plane (or gps) Longitude,degrees) (>@c:GeoCalcLongitude1,degrees) and (@c:GeoCalcDistance,nmiles) will give you the distance.Hope this helpsTom

[pve 0]

Hi Tom Well you have lowered the altitude on this Geocalc stuff. I think I can get this working now. Paul

[phjvh 0]

Hi,Can you give some more info about the:(A:NAV1 DME, nmiles) 3.4 * (L:HSI RANGE, number) 80 / / I use a similar one, but cannot get the scale very accurate. Jan"Beatus ille qui procul negotiis..."

[pve 0]

Jan I use (L:HSI RANGE, number) 1250 * in the GPS map draw. Started with (A:NAV1 DME, nmiles) 4 * 4 x 80 = 320 4 x 320 = 1280 near zoom size and adjusted it down to fit. You may have to play around with the numbers for different HSI screen sizes. Paul

[phjvh 0]

Hi,Thanks, I see.I use 1853, 1 Nm, to make it easier, but also need a lot of cifering.Jan"Beatus ille qui procul negotiis..."