How to add a layer with a spatial reference different from WGS84(eg GCS2000 WKID=4490)

[yxf...@yahoo.com]

        I had add a imageryLayer whose spatial reference was wkid=4490. I got an error which indicated that wkid=4490 was not supported.

How should I fix this problem.

       Besides, where can I configure the tileMatrixSet like this:

1.  "lods": [{
2.            "level": "EPSG:900913:8",
3.            "scale": 2183915.0935581755,
4.            "resolution": 611.4962261962892
5.          }, {
6.            "level": "EPSG:900913:9",
7.            "scale": 1091957.5467790877,
8.            "resolution": 305.7481130981446
9.          }, {
10.            "level": "EPSG:900913:10",
11.            "scale": 545978.7733895439,
12.            "resolution": 152.8740565490723
13.          }, {
14.            "level": "EPSG:900913:11",
15.            "scale": 272989.38669477194,
16.            "resolution": 76.43702827453615
17.          }, {
18.            "level": "EPSG:900913:12",
19.            "scale": 136494.69334738597,
20.            "resolution": 38.21851413726807
21.          }, {
22.            "level": "EPSG:900913:13",
23.            "scale": 68247.34667369298,
24.            "resolution": 19.109257068634037
25.          }, {
27.             "level": "EPSG:900913:14",
28.            "scale": 34123.67333684649,
29.            "resolution": 9.554628534317018
30.          }

[Omar Shehata]

Is this the projection you're talking about? 

https://epsg.io/4490

We have an issue open to add more projection support (https://github.com/AnalyticalGraphicsInc/cesium/issues/3877). For now the easiest thing would be to re-project it into WGS84. As for the tileMatrixSet question, if you're uploading data to ion (cesium.com/ion) you just upload the highest resolution and ion automatically generates the tiles at different levels of detail.