key error on loads()

[HumptyNumpty]

I am trying to read a simple czml file (see below)

trying as per the readme

doc = czml.CZML()
with open(fpath, 'r') as f:
doc.loads(f.read())

fails with a ValueError on bb.load(billboard) in czml.pyc

Any suggestions?

Many thanks

---

simple.czml

(from https://github.com/AnalyticalGraphicsInc/cesium/wiki/CZML-in-Cesium)

[
{
"id":"Headquarters",
"availability":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
"position":{
"cartesian":[
1216469.9357990976,-4736121.71856379,4081386.8856866374
]
},
"billboard":{
"color":{
"rgba":[
0,255,255,255
]
},
"horizontalOrigin":"CENTER",
"image":"http://cesiumjs.org/images/Cesium_Logo.png",
"scale":1.0,
"show":[
{
"interval":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
"boolean":true
}
],
"verticalOrigin":"CENTER"
}
}
]

[Frencil]

@HumptyNumpty while this library is stable it's not being developed as actively as Cesium itself. The example billboard document you referenced from this page:

[
  {
    "id":"Headquarters",
    "availability":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
    "position":{
      "cartesian":[
        1216469.9357990976,-4736121.71856379,4081386.8856866374
      ]
    },
    "billboard":{
      "color":{
        "rgba":[
          0,255,255,255
        ]
      },
      "horizontalOrigin":"CENTER",
      "image":"http://cesiumjs.org/images/Cesium_Logo.png",
      "scale":1.0,
      "show":[
        {
          "interval":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
          "boolean":true
        }
      ],
      "verticalOrigin":"CENTER"
    }
  }
]

Raises a ValueError when loaded because the Python/CZML library's billboard class doesn't support the following:

• The horizontalOrigin attribute
• The verticalOrigin attribute
• Interval definition for the show attribute (only a boolean value is supported)

Taking this into consideration, this edit of the example file does load without throwing any errors:

[
  {
    "id":"Headquarters",
    "availability":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
    "position":{
      "cartesian":[
        1216469.9357990976,-4736121.71856379,4081386.8856866374
      ]
    },
    "billboard":{
      "color":{
        "rgba":[
          0,255,255,255
        ]
      },
      "image":"http://cesiumjs.org/images/Cesium_Logo.png",
      "scale":1.0,
      "show":true
    }
  }
]

This is certainly a shortcoming of the Python/CZML library and an opportunity for a contributor to add this support.

[HumptyNumpty]

Many thanks.
Very helpful

---

On Wed, 7/10/15, Christopher Clark [email protected] wrote:

Subject: Re: [czml] key error on loads() (#17)
To: "cleder/czml" [email protected]
Cc: "HumptyNumpty" [email protected]
Date: Wednesday, 7 October, 2015, 17:59

@HumptyNumpty while
this library is stable it's not being developed as
actively as Cesium itself. The example billboard document
you referenced from this
page:

[
{
"id":"Headquarters",
"availability":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
"position":{
"cartesian":[
1216469.9357990976,-4736121.71856379,4081386.8856866374
]
},
"billboard":{
"color":{
"rgba":[
0,255,255,255
]
},
"horizontalOrigin":"CENTER",
"image":"http://cesiumjs.org/images/Cesium_Logo.png",
"scale":1.0,
"show":[
{
"interval":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
"boolean":true
}
],
"verticalOrigin":"CENTER"
}
}
]

Raises a ValueError when loaded because the
Python/CZML library's billboard class
doesn't support the following:

The horizontalOrigin attribute
The verticalOrigin attribute
Interval definition for the show attribute
(only a boolean value is supported)

Taking this into consideration, this edit of the example
file does load without throwing any errors:

[
{
"id":"Headquarters",
"availability":"2012-06-20T16:00:00Z/2012-06-20T16:02:00Z",
"position":{
"cartesian":[
1216469.9357990976,-4736121.71856379,4081386.8856866374
]
},
"billboard":{
"color":{
"rgba":[
0,255,255,255
]
},
"image":"http://cesiumjs.org/images/Cesium_Logo.png",
"scale":1.0,
"show":true
}
}
]

This is certainly a shortcoming of the Python/CZML
library and an opportunity for a contributor to add this
support.

—
Reply to this email directly or view
it on GitHub.