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Documentatie/VRANbs-API.md

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VRANbs API v0.3

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FarmMaps is an asynchronous architecture, the API flow keeps this in mind. The API expects that all data is already processed and available provided, for example through the normal FarmMaps flow (frontend).

For the currently available public FarmMaps API you can take a look at swagger: https://test.farmmaps.eu/swagger

Limitations

  • Currently VRANbs only accepts input tiffs in WGS84/EPSG4326
  • Data isn't automatically deleted as farmmaps has no support for this.
    • But API users can delete their own items through the farmmaps API.

Input preperation

  • Users can upload their own data if needed. (in case of when FarmMaps has not processed the required data).
    • The farmmaps file API can be used for this.

Users can poll the task api to see if a task is completed
This can be achieved with the task execution id obtained from calling the 'ItemTask' API.
Poll task status

Users can query the API for child items of a cropfield to see what items it has.

API flow

  • Authenticate User
  • Optional steps
    • Create cropfield through FarmMaps API
      • Item 'vnd.farmmaps.itemtype.cropfield' must be created with its data as specified in the api.
      • Task 'vnd.farmmaps.task.workflow' needs to be executed to aggregate all needed data.
        • This is an asynchronous process and can take a while before all data is collected in FarmMaps.
    • Upload own data
      • IF shape data, convert to geotiff.
    • Create 'vnd.farmmaps.itemtype.user.input' item for targetn calculation.
      • Task 'vnd.farmmaps.task.vranbs' can be executed with the 'targetn' operation
    • Task 'vnd.farmmaps.task.vranbs' can be executed with 'uptake' operation to create an nitrogen uptake map.
  • Task 'vnd.farmmaps.task.vranbs' must be executed with 'nitrogen' operation to create an appliance map.
  • Task 'vnd.farmmaps.task.taskmap' can be executed to create a taskmap.
  • Download item data (tiff of shape)

Steps

Authentication

Optional

Create Cropfield
Upload Data

Transform shape to geotiff

Shape to geotiff

Using VRA Nitrogen fertilization task

The VraNbs task currently supports 3 operations:

  • targetn - calculates the target nitrogen based on target yield.
  • uptake - creates the nitrogen uptake map.
  • application - creates the nitrogen fertilization application map.
targetn operation

Create a 'vnd.farmmaps.itemtype.user.input' item to use in this operation.
(step not needed if you already know the target nitrogen you want to work with.)
The user.input item must parent the '{user_code}:USER_IN' item and can be obtained by calling following request:

Request

GET /api/v1/Folders/my_uploads

Response 201

{
  "url": "/api/v1/folders/{user_code}:USER_IN",
  "code": "{user_code}:USER_IN",
  "name": "Uploaded",
  "created": "2020-03-04T14:41:41.099557",
  "updated": "2020-03-04T14:41:41.099557",
  "itemType": "FOLDER",
  "size": 0,
  "state": 0,
  "thumbnail": false
}

Create item
Create user.input item, pass just obtained parent code as parameter in {user_code}.

Request

POST /api/v1/items
{
  "parentCode": "{user_code}:USER_IN",
  "itemType": "vnd.farmmaps.itemtype.user.input",
  "name": "TargetN",
  "dataDate": "2020-03-02T14:22:09.265Z"
}

Response 201 Created

{
  "parentCode": "string",
  "geometry": {},
  "data": {},
  "tags": [
    "string"
  ],
  "url": "string",
  "code": "string",
  "name": "string",
  "created": "2019-12-18T10:16:21.455Z",
  "updated": "2019-12-18T10:16:21.455Z",
  "dataDate": "2019-12-18T10:16:21.455Z",
  "itemType": "string",
  "sourceTask": "string",
  "size": 0,
  "state": 0,
  "thumbnail": true
}

Response 401 Not authenticated
Response 403 No WRITE permissions in parent item
Response 404 Parent Item not found

Call the vranbs task
Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}. Use the code obtained from creating the user.input item as a parameter in {itemCode}.

Request

POST /api/v1/items/{code}/tasks
{
  "taskType": "vnd.farmmaps.task.vranbs",
  "attributes": {
      "operation": "targetn",
    "inputCode": "{itemCode}",
    "plantingDate": "2020-02-01T00:00:00.000Z",
    "measurementDate": "2020-06-01T00:00:00.000Z",
    "purposeType": "consumption", // consumption, fries, potato, starch
    "targetYield": "60"
  }
}

Response 201

{
  "code": "string",
  "taskType": "vnd.farmmaps.task.workflow"
}

Response 400 Tasktype not found
Response 401 Not authenticated
Response 403 No WRITE permissions in item
Response 404 Item not found

Query user.input targetN item
You can query the user.input item to get the calculated targetN value from the data field of the item.

Request

GET /api/v1/items/{code}

Response 200

{
  "parentCode": "string",
  "geometry": {},
  "data": {
      "TSum": "2700",
      "TargetYield": "60",
      "TargetN": "249.2341"
  },
  "tags": [
    "string"
  ],
  "url": "string",
  "code": "string",
  "name": "TargetN",
  "created": "2019-12-18T10:16:21.455Z",
  "updated": "2019-12-18T10:16:21.455Z",
  "dataDate": "2019-12-18T10:16:21.455Z",
  "itemType": "vnd.farmmaps.itemtype.user.input",
  "sourceTask": "string",
  "size": 0,
  "state": 0,
  "thumbnail": true
}
Uptake map operation

Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}.
Use the input map code inside {itemCode}, specifying an inputCode for the input data item.

{itemCode} needs the code of the data input item passed into it. ex. uploaded isaria/data data.
The resulting nitrogen uptake map will be created as a child item under the cropfield item (this can be queried).

Request

POST /api/v1/items/{code}/tasks
{
  "taskType": "vnd.farmmaps.task.vranbs",
  "attributes": {
      "operation": "uptake",
      "inputCode": "{itemCode}",
      "plantingDate": "2020-02-01T00:00:00.000Z",
      "measurementDate": "2020-06-01T00:00:00.000Z",
      "inputType": "irmi", // yara, ci, irmi or wdvi
  }
}

Response 201

{
  "code": "string", // code of task operation, can be queried for status
  "taskType": "vnd.farmmaps.task.vranbs",
  "attributes": {
      "operation": "uptake",
      "inputCode": "{itemCode}",
      "inputType": "irmi", // yara, ci, irmi or wdvi
  }
}

Response 400 Tasktype not found
Response 401 Not authenticated
Response 403 No WRITE permissions in item
Response 404 Item not found

Application map operation

Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}.
Use the input map code inside {itemCode}, specifying an inputCode for the input data item.

{itemCode} needs the code of the data input item passed into it. ex. uploaded isaria/data data.
The resulting nitrogen application map will be created as a child item under the cropfield item (this can be queried).

Request

POST /api/v1/items/{code}/tasks
{
  "taskType": "vnd.farmmaps.task.vranbs",
  "attributes": {
      "operation": "application",
      "inputCode": "{itemCode}",
      "plantingDate": "2020-02-01T00:00:00.000Z",
      "measurementDate": "2020-06-01T00:00:00.000Z",
      "inputType": "irmi", // yara, ci, irmi or wdvi
      "targetN": "249.22948"
  }
}

Response 201

{
  "code": "string", // code of task operation, can be queried for status
  "taskType": "vnd.farmmaps.task.vranbs",
  "attributes": {
      "operation": "nitrogen",
      "inputCode": "{itemCode}",
      "inputType": "irmi", // yara, ci, irmi or wdvi
      "targetN": "249.22948"
  }
}

Response 400 Tasktype not found
Response 401 Not authenticated
Response 403 No WRITE permissions in item
Response 404 Item not found

Optional input parameters

There are some optional task attribute input parameters for greater flexibility.

  • inputLayerName
    Allows you to specify which layer to use for an input item.
  • minPercentile value between 0.0 - 1.0
    Allows you to specify the minimum percentile value to 'filter' lower bound input data
  • maxPercentile value between 0.0 - 1.0
    Allows you to specify the maximum percentile value to 'filter' upperbound bound input data

Default percentile values for nbs are 0.0 and 1.0.

{
    "inputLayerName": "customLayerName",
    "minPercentile": "0.1",
    "maxPercentile": "0.95"
}
Create taskmap

Create Taskmap

Download the data

In case the data is available it can be downloaded with the items API.

Request

GET /api/v1/items/{itemcode}/download