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How to use declare_parameters with a vector of floats?

asked 2021-03-05 10:47:40 -0500

Hakaishin
142 ●24 ●33 ●37

I'm using ros2 source build master branch. I was trying

 this->declare_parameters<std::vector<float>>("foo", { {"bar", {1.2}},{ {"zee", {4.2}}});

but that fails with

/home/usr/ros2_foxy/install/rclcpp_lifecycle/include/rclcpp_lifecycle/lifecycle_node_impl.hpp:144:21: error: no matching function for call to ‘rclcpp::ParameterValue::get<std::vector<float, std::allocator<float> > >() const’
  144 |   ).get<ParameterT>();

Is there currently a way to specify a list of parameters which have vectors as their values?

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answered 2021-08-25 03:03:18 -0500

Hakaishin
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It's not implemented for floats, just change the syntax to double and it works.

this->declare_parameters<std::vector<double>>("foo", {
            {"bar", {1.2}},
});

and get the config with

std::map<std::string, std::vector<double>> foo;
this->get_parameters("foo", foo);

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Asked: 2021-03-05 10:47:40 -0500

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Last updated: Aug 25 '21

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How to use declare_parameters with a vector of floats?