{
  "id": 57983,
  "title": "How are hits transformed?",
  "url": "/competitions/trackml-particle-identification/discussion/57983",
  "author_name": "",
  "post_date": "2018-05-31T18:09:23.467121Z",
  "votes": 2,
  "comment_count": 1,
  "views": 0,
  "content": "<p>Hi,</p>\n\n<p>I was looking at several kernels and discussion posts on how to transform the x,y,z coordinates of the hits but couldn't understand what types of transformations they are. In particular, I was interested in the transformations in <a href=\"https://www.kaggle.com/mindcool/unrolling-of-helices-outliers-removal\">this</a> kernel and <a href=\"https://www.kaggle.com/c/trackml-particle-identification/discussion/57643\">this</a> discussion post.</p>\n\n<p>I have also found references to cone slicing, how is this done?\nAre there any resources to find out more about these transformations?</p>\n\n<p>Thanks</p>",
  "messages": [
    {
      "id": "336441",
      "postDate": "05/31/2018 18:09:23",
      "content": "<p>Hi,</p>\n\n<p>I was looking at several kernels and discussion posts on how to transform the x,y,z coordinates of the hits but couldn't understand what types of transformations they are. In particular, I was interested in the transformations in <a href=\"https://www.kaggle.com/mindcool/unrolling-of-helices-outliers-removal\">this</a> kernel and <a href=\"https://www.kaggle.com/c/trackml-particle-identification/discussion/57643\">this</a> discussion post.</p>\n\n<p>I have also found references to cone slicing, how is this done?\nAre there any resources to find out more about these transformations?</p>\n\n<p>Thanks</p>",
      "rawMarkdown": "Hi,\n\nI was looking at several kernels and discussion posts on how to transform the x,y,z coordinates of the hits but couldn't understand what types of transformations they are. In particular, I was interested in the transformations in [this][1] kernel and [this][2] discussion post.\n\nI have also found references to cone slicing, how is this done?\nAre there any resources to find out more about these transformations?\n\nThanks\n\n[1]: https://www.kaggle.com/mindcool/unrolling-of-helices-outliers-removal\n[2]: https://www.kaggle.com/c/trackml-particle-identification/discussion/57643",
      "votes": null
    },
    {
      "id": "336454",
      "postDate": "05/31/2018 18:49:25",
      "content": "<p>I wrote a Kernel with an example of transferring to cylindrical coordinates or polar coordinates -- here: <a href=\"https://www.kaggle.com/osa111/transformation-visiualization-with-questions\">Transformation Visualization</a>. \nYou have to expand the code to see the functions, called (cartesian to cylindrical &amp; cartesian to 3d polar) and the plots will show you how the data looks like after transformation. I hope it'll help</p>\n\n<p>As for the cone slicing, I'm curious like you. Maybe you should post a comment on Heng CherKeng post in the link you provided. </p>",
      "rawMarkdown": "I wrote a Kernel with an example of transferring to cylindrical coordinates or polar coordinates -- here: [Transformation Visualization][1]. \nYou have to expand the code to see the functions, called (cartesian to cylindrical &amp; cartesian to 3d polar) and the plots will show you how the data looks like after transformation. I hope it'll help\n\nAs for the cone slicing, I'm curious like you. Maybe you should post a comment on Heng CherKeng post in the link you provided. \n\n\n  [1]: https://www.kaggle.com/osa111/transformation-visiualization-with-questions",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 336454,
      "author_name": "osa111",
      "author_url": "",
      "post_date": "05/31/2018 18:49:25",
      "content": "<p>I wrote a Kernel with an example of transferring to cylindrical coordinates or polar coordinates -- here: <a href=\"https://www.kaggle.com/osa111/transformation-visiualization-with-questions\">Transformation Visualization</a>. \nYou have to expand the code to see the functions, called (cartesian to cylindrical &amp; cartesian to 3d polar) and the plots will show you how the data looks like after transformation. I hope it'll help</p>\n\n<p>As for the cone slicing, I'm curious like you. Maybe you should post a comment on Heng CherKeng post in the link you provided. </p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "336441": "Hi,\n\nI was looking at several kernels and discussion posts on how to transform the x,y,z coordinates of the hits but couldn't understand what types of transformations they are. In particular, I was interested in the transformations in [this][1] kernel and [this][2] discussion post.\n\nI have also found references to cone slicing, how is this done?\nAre there any resources to find out more about these transformations?\n\nThanks\n\n[1]: https://www.kaggle.com/mindcool/unrolling-of-helices-outliers-removal\n[2]: https://www.kaggle.com/c/trackml-particle-identification/discussion/57643",
    "336454": "I wrote a Kernel with an example of transferring to cylindrical coordinates or polar coordinates -- here: [Transformation Visualization][1]. \nYou have to expand the code to see the functions, called (cartesian to cylindrical &amp; cartesian to 3d polar) and the plots will show you how the data looks like after transformation. I hope it'll help\n\nAs for the cone slicing, I'm curious like you. Maybe you should post a comment on Heng CherKeng post in the link you provided. \n\n\n  [1]: https://www.kaggle.com/osa111/transformation-visiualization-with-questions"
  },
  "source": "meta"
}