error: no match for ‘operator/’ (operand types are ‘const ceres::Jet<double, 5>’ and ‘int’)

[Thanh Pham Chi]

Hi everyone,

I'm new to ceres-solver and trying to solve my 7 non-linear equations with 5 unknown variables and then this error appeared (see attached image below). Can anyone help me please.

[Thanh Pham Chi]

Again here is a better image

[Sameer Agarwal]

Are you using =/ in your code?

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[Thanh Pham Chi]

Thank you for your time. No, I don't use it in my code. Also here are some notes from the ceres solver, hope it helps you better understand the situation.

[Rick Liu]

Try to wrap number by T in AutoDiffCostFunction. See the example below:

struct CostFunctor {

template <typename T>

bool operator()(const T* const x, T* residual) const {

- residual[0] = x[0] / 10.0;

+ residual[0] = x[0] / T(10.0);

return true;

}

};

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[Sameer Agarwal]

From the errors it seems you are trying to work with integers. you need to cast to T, but also you need to becareful that your function is actually differentiable.

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[Thanh Pham Chi]

Indeed, cast integers to T() fixed my problem. Thank you so much @Ricky and @Sameer.