cannot get property correctly about vega

[domoritz]

Thanks for the report. Can you provide a minimal reproducible example that demonstrates the issue?

[I075818]

Hi domoritz,
Please use this json to debug.

{
    "$schema": "https://vega.github.io/schema/vega/v5.json",
    "description": "A timeline visualization of the lives of the first five U.S. presidents.",
    "data": [
        {
            "name": "testdata",
            "values": [
                {
                    "_index": "metrics-otel-v1-2023.09.06",
                    "_type": "_doc",
                    "_id": "_YH3aIoBwqxJSF1N_aqW",
                    "_source": {
                        "kind": "SUMMARY",
                        "count": 5,
                        "flags": 0,
                        "description": "POC metrics for outbound request",
                        "sum": 7.003,
                        "name": "outbound_request_seconds",
                        "startTime": "2023-09-06T04:35:22.773Z",
                        "quantileValuesCount": 2,
                        "time": "2023-09-06T05:29:52.773Z",
                        "metric.attributes.pod_id": "p2"
                    }
                },
                {
                    "_index": "metrics-otel-v1-2023.09.06",
                    "_type": "_doc",
                    "_id": "_4H3aIoBwqxJSF1N_aqW",
                    "_source": {
                        "kind": "SUMMARY",
                        "count": 5,
                        "flags": 0,
                        "description": "POC metrics for outbound request",
                        "sum": 5.563,
                        "name": "outbound_request_seconds",
                        "startTime": "2023-09-06T05:03:22.773Z",
                        "quantileValuesCount": 2,
                        "time": "2023-09-06T05:29:52.773Z",
                        "metric.attributes.pod_id": "p1"
                    }
                }
            ],
            "transform": [
                {
                    "type": "filter",
                    "expr": "datum._source.name == 'outbound_request_seconds'"
                }
            ]
        },
        {
            "name": "groupbyPod",
            "source": "testdata",
            "transform": [
                {
                    "type": "aggregate",
                    "ops": [
                        "sum"
                    ],
                    "fields": [
                        "_source.count"
                    ],
                    "as": [
                        "s1"
                    ],
                    "groupby": [
                        "_source.metric.attributes.pod_id"
                    ]
                }
            ]
        }
    ]
}

[PBI-David]

There are no marks in your sample spec. Regardless, I think you just need to escape any property names containing . with \\.

e.g. "_source\\.metric\\.attributes\\.pod_id"

[I075818]

Thank you very much!