{ "id": 346535, "title": "Where are the course types, where are the checkpoints? ", "url": "/competitions/big-data-derby-2022/discussion/346535", "author_name": "Adrian Muresan", "post_date": "2022-08-20T05:20:47.036000", "votes": 6, "comment_count": 0, "views": 0, "content": "

Dear participants,

\n

No surprises here, the dirt in on the outside, the inner turf is on the very inside, the obstacles are on the soft inner turf.
\n\"\"
\n\"\"
\n\"\"
\nHere I just want to show you how the checkpoints look like. The steps are as follow:
\nTransform the ecef coordinates so that every point is in a single plane, let's call it x-y plane. This transformation matrix is unique for every venue.
\nPick a horse and find the velocity of the horse at each point of its trajectory.
\nRotate the velocity vector with an angle of Pi/2 counterclockwise (trigonometric direction).
\n\"\"

", "messages": [ { "id": 1906656, "postDate": "2022-08-20T05:20:47.037Z", "content": "

Dear participants,

\n

No surprises here, the dirt in on the outside, the inner turf is on the very inside, the obstacles are on the soft inner turf.
\n\"\"
\n\"\"
\n\"\"
\nHere I just want to show you how the checkpoints look like. The steps are as follow:
\nTransform the ecef coordinates so that every point is in a single plane, let's call it x-y plane. This transformation matrix is unique for every venue.
\nPick a horse and find the velocity of the horse at each point of its trajectory.
\nRotate the velocity vector with an angle of Pi/2 counterclockwise (trigonometric direction).
\n\"\"

", "rawMarkdown": "Dear participants, \n\nNo surprises here, the dirt in on the outside, the inner turf is on the very inside, the obstacles are on the soft inner turf. \n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2F5013f53be70a1eb0d4c5ffe9330a2a29%2Fcourse_types_aqu.png?generation=1661007799857320&alt=media)\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2F818650c848055ea49010f6f0b595b99f%2Fcourse_types_bel.png?generation=1661007818066132&alt=media)\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2F8468c6c1b814083f9482db98e1fa6536%2Fcourse_types_sar.png?generation=1661007829649900&alt=media)\nHere I just want to show you how the checkpoints look like. The steps are as follow:\nTransform the ecef coordinates so that every point is in a single plane, let's call it x-y plane. This transformation matrix is unique for every venue.\nPick a horse and find the velocity of the horse at each point of its trajectory. \nRotate the velocity vector with an angle of Pi/2 counterclockwise (trigonometric direction). \n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2Fa2dcd7d7db00ec0b6501446c406cc487%2Flandmarks1.png?generation=1660973012423900&alt=media)\n", "votes": 6 } ], "comments": [], "raw_markdown_by_id": { "1906656": "Dear participants, \n\nNo surprises here, the dirt in on the outside, the inner turf is on the very inside, the obstacles are on the soft inner turf. \n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2F5013f53be70a1eb0d4c5ffe9330a2a29%2Fcourse_types_aqu.png?generation=1661007799857320&alt=media)\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2F818650c848055ea49010f6f0b595b99f%2Fcourse_types_bel.png?generation=1661007818066132&alt=media)\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2F8468c6c1b814083f9482db98e1fa6536%2Fcourse_types_sar.png?generation=1661007829649900&alt=media)\nHere I just want to show you how the checkpoints look like. The steps are as follow:\nTransform the ecef coordinates so that every point is in a single plane, let's call it x-y plane. This transformation matrix is unique for every venue.\nPick a horse and find the velocity of the horse at each point of its trajectory. \nRotate the velocity vector with an angle of Pi/2 counterclockwise (trigonometric direction). \n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F5949745%2Fa2dcd7d7db00ec0b6501446c406cc487%2Flandmarks1.png?generation=1660973012423900&alt=media)\n" } }