Matrix endpoint returning null for all locations when one route does not exist

[ddunlop]

Is there an existing issue for this?

• I have searched the existing issues

Where did you encounter this issue?

live API, self-hosted instance

Request URL

https://api.openrouteservice.org/v2/matrix/driving-car

POST Request Body

{
  "locations": [
    [-157.8814736, 21.3280137],
    [-157.8667852, 21.3138143],
    [-158.0245043, 21.4545909],
    [-157.9076614, 21.6066256],
    [-157.9186302, 21.6240531],
    [-157.9813495, 21.6950804],
    [-156.2243193, 20.6204251]
  ],
  "destinations": [0],
  "metrics": ["distance", "duration"],
  "units": "mi"
}

Response

Response

{
    "durations": [
        [
            0.0
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ]
    ],
    "distances": [
        [
            0.0
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ],
        [
            null
        ]
    ],
    "destinations": [
        {
            "location": [
                -157.858147,
                21.309892
            ],
            "snapped_distance": 1.08
        }
    ],
    "sources": [
        {
            "location": [
                -157.858147,
                21.309892
            ],
            "snapped_distance": 1.08
        },
        {
            "location": [
                -157.850419,
                21.303858
            ],
            "snapped_distance": 12.08
        },
        {
            "location": [
                -157.83337,
                21.300157
            ],
            "snapped_distance": 39.68
        },
        {
            "location": [
                -157.833248,
                21.300057
            ],
            "snapped_distance": 35.92
        },
        {
            "location": [
                -156.464698,
                20.88822
            ],
            "snapped_distance": 20.03
        },
        {
            "location": [
                -159.319676,
                22.071742
            ],
            "snapped_distance": 16.72
        },
        {
            "location": [
                -155.6649,
                20.022491
            ],
            "snapped_distance": 13.04
        },
        {
            "location": [
                -155.097922,
                19.717017
            ],
            "snapped_distance": 8.69
        }
    ],
    "metadata": {
        "attribution": "openrouteservice.org | OpenStreetMap contributors",
        "service": "matrix",
        "timestamp": 1714395744688,
        "query": {
            "locations": [
                [
                    -157.8581401,
                    21.3098845
                ],
                [
                    -157.85031,
                    21.30382
                ],
                [
                    -157.833707,
                    21.299987
                ],
                [
                    -157.83342,
                    21.299776
                ],
                [
                    -156.46452,
                    20.88829
                ],
                [
                    -159.31975372883534,
                    22.071610308056204
                ],
                [
                    -155.66481,
                    20.02241
                ],
                [
                    -155.09788,
                    19.71695
                ]
            ],
            "profile": "driving-car",
            "responseType": "json",
            "destinations": [
                "0"
            ],
            "metrics": [
                "distance",
                "duration"
            ],
            "units": "mi"
        },
        "engine": {
            "version": "8.0.0",
            "build_date": "2024-03-21T13:55:54Z",
            "graph_date": "2024-04-28T13:28:40Z"
        }
    }
}

Current behavior

The last location is causing all of the distance & duration results to become null. If you remove the last location from the request then the distance & duration arrays start to return numerical values.

Expected behavior

All of the locations except for the last one should return numbers. The distance & duration for the last one should be null.

Openrouteservice Version

8.0.0

Build date

2024-03-21T13:55:54Z

Graph date

2024-04-28T13:28:40Z

Forum Topic Link

https://ask.openrouteservice.org/t/matrix-endpoint-returning-null-for-all-locations-when-some-routes-exist/6046

[aoles]

Thanks @ddunlop for your patience!

Unfortunately, I was unable to reproduce the described behavior when querying the ORS public API, see the following R script. Apparently the last location from the provided list of locations lies on a different island than the rest. There doesn't seem to be a connection mapped in OSM between these two islands, so no route can be found from/to the last and the other locations, as evident from the map below.

Could you maybe provide some details on the configuration of your ORS instance?

Cheers,
Andrzej

library(openrouteservice)
library(leaflet)
  
locations = list(
  c(-157.8814736, 21.3280137),
  c(-157.8667852, 21.3138143),
  c(-158.0245043, 21.4545909),
  c(-157.9076614, 21.6066256),
  c(-157.9186302, 21.6240531),
  c(-157.9813495, 21.6950804),
  c(-156.2243193, 20.6204251)
)

ors_matrix(locations)$durations
#>         [,1]    [,2]    [,3]    [,4]    [,5]    [,6] [,7]
#> [1,]    0.00  246.19 1704.80 3366.19 3503.91 4221.34   NA
#> [2,]  362.33    0.00 1991.80 3574.82 3712.54 4508.34   NA
#> [3,] 1736.16 1942.24    0.00 4102.02 3921.32 3028.61   NA
#> [4,] 3349.09 3538.51 4069.81    0.00  209.71 1049.52   NA
#> [5,] 3510.71 3700.13 3913.01  233.61    0.00  892.72   NA
#> [6,] 4301.90 4507.98 3020.29 1073.42  892.72    0.00   NA
#> [7,]      NA      NA      NA      NA      NA      NA    0

res <- ors_matrix(locations, destinations=0, metrics=c("distance", "duration"), units = "mi")
res$durations
#>         [,1]
#> [1,]    0.00
#> [2,]  362.33
#> [3,] 1736.16
#> [4,] 3349.09
#> [5,] 3510.71
#> [6,] 4301.90
#> [7,]      NA

res$distances
#>       [,1]
#> [1,]  0.00
#> [2,]  2.26
#> [3,] 15.11
#> [4,] 27.89
#> [5,] 29.18
#> [6,] 39.87
#> [7,]    NA

df <- do.call(rbind, locations) %>% data.frame()
colnames(df)  <- c("lon", "lat")

leaflet() %>%
  addTiles() %>%
  addAwesomeMarkers(data = df, icon = awesomeIcons(text = 1:nrow(df), fontFamily = "arial"))