Simulink Error "Attempt to extract field 'p1' from 'mxArray'"
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Dave Russell
el 4 de Nov. de 2021
Respondida: Jere Knuutinen
el 6 de Ag. de 2024 a las 17:31
I'm creating a parabolic curve fit then trying to send the parameters to another function block. It works in Matlab, but when I put it into function block
function coefficients = my_block(Start, Steps, Setpoint)
coder.extrinsic('fit');
%#codegen
coefficients = [0;0;0];
x = [0; Steps; Steps*2];
y = [Start; Setpoint; Start];
f = fit(x,y,'poly2');
coefficients(1) = f.p1;
coefficients(2) = f.p2;
coefficients(3) = f.p3;
I get the error above. Simple fix?
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Respuestas (2)
Swatantra Mahato
el 8 de Nov. de 2021
Hi Dave,
The output of the extrinsic function 'fit' would be an mxArray, which is likely leading to the error when trying to extract 'p1' in the line
coefficients(1) = f.p1;
You can refer to the following link to work with output of an extrinsic function
Hope this helps
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Jere Knuutinen
el 6 de Ag. de 2024 a las 17:31
Did you find solution for this problem?
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