Que hacer cuando aparece un dato discreto NaN

Buenos dias

tengo ese codigo:

[za,Kea,Vea] = Prucom;
%[z_A,z_B,z_C,z_D,z_E,Ke] = JUDP_t;
z1(k) = za; %za;
Ke(k) = Kea ; %Kea;
Ve(k) = Vea;
vsx(k) = Ve(k)*nay*sin(Ke(k)*pi/180);
vsy(k) = Ve(k)*nay*cos(Ke(k)*pi/180);

datos discretos za, Kea y Vea son captutrados por la funcion Prucom de un UDP. Algunas veces en lugar de un valor aparece

NaN y las siguientes instrucciones interrumpen el algoritmo.

Que debo hacer para que se ignore el dato NaN y no se interrumpa proceso

[Walter Roberson]

Approximate translation:

Discrete data za, Kea and Vea are captured by the Prucom function of a UDP. Sometimes instead of a value, NaN appears and the following instructions interrupt the algorithm.What should I do so that the NaN data is ignored and the process is not interrupted?

[Guillermo Soriano]

thank you Walter. I wroteed in spanish because the dialog was in my language.

Your translation is perfect... exactly what I asked in spanish.

Some ideas came to jump the process and therefore will not be made any correction. It is a extended kalman filter algorithm. If you have a better idea, please let me know it

Answer 1

[Walter Roberson]

In the worst case, there might be nothing you can do.

But possibly what you could do is convert your for loop into a while loop along these lines:

k = 0;
nanrun = 0;
while k <= NUMBER_OF_SAMPLES_TO_READ
    [za,Kea,Vea] = Prucom;
    if isnan(za) || isnan(Kea) || isnan(Vea);
        nanrun = nanrun + 1;
        if nanrun > LIMIT_ON_NUMBER_OF_NAN; break; end
        continue;
    else
        nanrun = 0;
    end
    k = k + 1;
    z1(k) = za; %za;
    Ke(k) = Kea ; %Kea;
    Ve(k) = Vea;
    vsx(k) = Ve(k)*nay*sin(Ke(k)*pi/180);
    vsy(k) = Ve(k)*nay*cos(Ke(k)*pi/180);
end

This reads up to NUMBER_OF_SAMPLES_TO_READ readings.

This also contains protections in case of lots of nan in a row; if there are more than LIMIT_ON_NUMBER_OF_NAN in a row then it stops reading.

[Guillermo Soriano]

Thank you so much Walter. The algorithm is much longer but I believe these instructions will work.