qs = self._chain() qs.query.set_limits(k, k + 1) qs._fetch_all() return qs._result_cache[0]
时间: 2024-02-14 13:19:45 浏览: 15
这段代码中的 `IndexError: list index out of range` 错误可能是由于以下几种情况之一引起的:
1. `_result_cache` 列表为空,即 `qs._result_cache` 的长度为 0。这可能是因为 `qs._fetch_all()` 没有正确地获取数据,导致结果缓存为空。你可以在调试时打印一下 `qs._result_cache` 的值,来确认是否为空。
2. `_result_cache` 列表长度不足,即 `qs._result_cache` 的长度小于 1。这可能是因为 `qs._fetch_all()` 获取的数据不足,导致结果缓存中没有足够的数据。你可以检查一下 `_fetch_all()` 方法中获取数据的逻辑,看看是否存在问题。
3. `k` 的值超出了 `_result_cache` 列表的索引范围。这可能是因为 `qs.query.set_limits(k, k + 1)` 设定的索引值超出了结果缓存的范围。你可以在调试时打印一下 `k` 的值以及 `_result_cache` 的长度,来确认是否存在这个问题。
你可以根据具体情况分析,找到问题所在并进行修复。
相关问题
给下列程序添加注释: void DWAPlannerROS::reconfigureCB(DWAPlannerConfig &config, uint32_t level) { if (setup_ && config.restore_defaults) { config = default_config_; config.restore_defaults = false; } if ( ! setup_) { default_config_ = config; setup_ = true; } // update generic local planner params base_local_planner::LocalPlannerLimits limits; limits.max_vel_trans = config.max_vel_trans; limits.min_vel_trans = config.min_vel_trans; limits.max_vel_x = config.max_vel_x; limits.min_vel_x = config.min_vel_x; limits.max_vel_y = config.max_vel_y; limits.min_vel_y = config.min_vel_y; limits.max_vel_theta = config.max_vel_theta; limits.min_vel_theta = config.min_vel_theta; limits.acc_lim_x = config.acc_lim_x; limits.acc_lim_y = config.acc_lim_y; limits.acc_lim_theta = config.acc_lim_theta; limits.acc_lim_trans = config.acc_lim_trans; limits.xy_goal_tolerance = config.xy_goal_tolerance; limits.yaw_goal_tolerance = config.yaw_goal_tolerance; limits.prune_plan = config.prune_plan; limits.trans_stopped_vel = config.trans_stopped_vel; limits.theta_stopped_vel = config.theta_stopped_vel; planner_util_.reconfigureCB(limits, config.restore_defaults); // update dwa specific configuration dp_->reconfigure(config); }
/**
* @brief Callback function for dynamic reconfiguration of DWA planner parameters
*
* @param config Reference to the configuration object that stores the updated parameters
* @param level The level of reconfiguration, unused in this function
*/
void DWAPlannerROS::reconfigureCB(DWAPlannerConfig &config, uint32_t level) {
// If the setup has been completed and restore_defaults flag is set, restore default configuration
if (setup_ && config.restore_defaults) {
config = default_config_;
config.restore_defaults = false;
}
// If setup has not been completed, store default configuration and set the setup flag to true
if ( ! setup_) {
default_config_ = config;
setup_ = true;
}
// Update generic local planner parameters
base_local_planner::LocalPlannerLimits limits;
limits.max_vel_trans = config.max_vel_trans;
limits.min_vel_trans = config.min_vel_trans;
limits.max_vel_x = config.max_vel_x;
limits.min_vel_x = config.min_vel_x;
limits.max_vel_y = config.max_vel_y;
limits.min_vel_y = config.min_vel_y;
limits.max_vel_theta = config.max_vel_theta;
limits.min_vel_theta = config.min_vel_theta;
limits.acc_lim_x = config.acc_lim_x;
limits.acc_lim_y = config.acc_lim_y;
limits.acc_lim_theta = config.acc_lim_theta;
limits.acc_lim_trans = config.acc_lim_trans;
limits.xy_goal_tolerance = config.xy_goal_tolerance;
limits.yaw_goal_tolerance = config.yaw_goal_tolerance;
limits.prune_plan = config.prune_plan;
limits.trans_stopped_vel = config.trans_stopped_vel;
limits.theta_stopped_vel = config.theta_stopped_vel;
// Call reconfigureCB function of the planner_util_ object with updated limits and restore_defaults flag
planner_util_.reconfigureCB(limits, config.restore_defaults);
// Call reconfigure function of the dp_ object with updated configuration
dp_->reconfigure(config);
}
neighbors_limits.pkl
根据提供的引用内容,无法找到关于"neighbors_limits.pkl"的相关信息。请提供更多的上下文或者详细的问题描述,以便我能够更好地回答你的问题。
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