3d ellipse render

[arianna w]

Good morning,

I'm trying to render a geojson with a combination of point and 3d ellipse data. What needs to be done to configure this?

Thanks!

Arianna

[William Wall]

Given a point geometry with the properties SEMI_MAJOR, SEMI_MINOR (numbers in nautical miles), and ORIENTATION (degrees), you can:

- open the file

- select the layer

- change its style to "Ellipse"

- select a Fill Style and bump the slider up a bit (or you won't be able to see it)

- select a Border style

- select the "Show Ellipsoids" checkbox

(and obviously you need to be in 3D rather than 2D)

Here is a screenshot showing that.

If your question was more about how to do this programmatically, please let me know.

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[William Wall]

That layer looks like it contains a lot more than just point geoms, and I would need a small example file for comparison.

You also must have the 3 properties I mentioned as part of those points, which you can check by right-clicking the point and selecting Feature Info.

On Fri, Feb 23, 2024, 10:11 arianna w <arian...@gmail.com> wrote:

Hello,

I'm presently using the example version of Opensphere (https://master-branch-opensphere-ngageoint.surge.sh/), have put it in 3d mode, and as the attachment indicates I don't see ellipse as a dropdown option. Would it make more sense to render the geojson ellipse as a polygon geometry object?

Thank you in advance for any insights you can provide. Please let me know if you need any other details from me. 

Best,

Arianna

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[arianna w]

Here is a sample: 

conf_ellipsoid95.length is in meters which is a 2D representation of ellipsoid length
conf_ellipsoid95.orient is in degrees off north which is a 2D representation of ellipsoid orientation

{
  "type": "FeatureCollection",
  "features": [
{
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [
          0.18,
          0.53012072519204,
          0
        ]
      },
      "properties": {
        "model_id": "test"}
    },
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [
          0.17088920818288,
          0.52381556655405,
          0
        ]
      },
      "properties": {
        "model_id": "test2",
         "estimates": [
              {
                "conf_ellipsoid95": {
                  "length": [
                    11890.090356263534,
                    1.556283341982103,
                    1.5556266054579904
                  ],
                  "orient": [
                    0.8669847692218672,
                    1.2232269381312904,
                    2.680058700595287
                  ]
}
  }
]
}
}
]
}

[Dave Kumar]

Did you get help on this ?

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[arianna w]

Does the schema I'm building have to conform to the below schema as well? 

Hide quoted text

On Mon, Feb 26, 2024 at 4:12 PM William Wall <william....@gmail.com> wrote:

To my knowledge, OpenSphere has never supported nested JSON properties in that manner. It can only read a flatter properties format like this:

{
      "type": "Feature",

      "properties": {

            "semi_major": 11890,

            "semi_major_units": "m",

            "semi_minor": 1.556,

            "semi_minor_units": "m",

            "orientation": 45

      }

}