LOS function doesn't properly output the LOS state when it's run in using parpool

When I run the los function in a squential manner I got some reasonable results, but when I run the same function using Parallel computing using Processes profile, I got a different results, most of the results is 1's only.

Here is the sequential line..

LOS = los(tx, rx);

here is the parallel line:

los1 = parfeval(@los ,1,tx, rx);

LOS = fetchOutputs(los1);

the results are is is the follwing images:

for sequential output, SEE LOS Columns

for sequential input SEE LOS Columns

[Ayush]

could you please send me your data?

[Tarek Mohamed Amin]

you mean the lat/long ?

[Tarek Mohamed Amin]

attached a file with Lat/Long pairs, you can use tx position as Latitude /Longitude = (13.419169,-16.705148), and use any antenna height, ex 22 meters

[Raymond Norris]

Can you provide more code as to how to run this (specifically how you build up tx and rx)? I don't think I'm doing it right.

>> tx_rx = readmatrix('1.csv.xlsx','NumHeaderLines',1,'ExpectedNumVariables',2,'OutputType','double','FileType','spreadsheet');
>> tx = txsite("Latitude",13.419169,"Longitude",-16.705148,"AntennaHeight",22);
>> rx = rxsite("Latitude",tx_rx(1,1),"Longitude",tx_rx(1,2),"AntennaHeight",22);
>> LOS = los(tx,rx);
>> LOS2 = parfeval(@los,1,tx,rx);
>> LOS
LOS =
logical
1
>> fetchOutputs(LOS2)
ans =
logical
1
>> 
>> rx = txsite("Latitude",-89.8248,"Longitude",-0.30577,"AntennaHeight",22);
>> LOS = los(tx,rx);
>> LOS2 = parfeval(@los,1,tx,rx);
>> LOS
LOS =
logical
0
>> fetchOutputs(LOS2)
ans =
logical
0
>> 

[Tarek Mohamed Amin]

rx = rxsite("Latitude",lats, ...
       "Longitude",longs, ...
       "AntennaHeight",1.5);

this is how I create the Rx, the creation of tx is just passing the the lat and long of the tx,

here Lats and Long is a sequence of latitudes and longitudes of the positions of the receivers, please note that you need to import the map file to be able to get the correct results.

so as your code, you can type:

rxs = rxsite("Latitude", tx_rx(:, 1), "Longitude", tx_rx(:, 2));

and then pass the rxs variable to the loss function.

the problem happens when the rx not a single point, it's a sequence instead @Raymond Norris