Check for already declared parameter #476
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The PR ros/filters#80 in the filterchain base class prevents the rclcpp::exceptions::ParameterAlreadyDeclaredException based on the filter name and type declarations. For the different parameter of the single grid map filters, a check inside your ParameterReader is necessary. |
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When using the same parameter for several instances of the filter or a filter chain (like in some ros2 forks of your elevation mapping repository), it will throw rclcpp::exceptions::ParameterAlreadyDeclaredException.
This PR just checks if the parameter already exists before declaring it.