Field Search API

API change history

The Field Search API is an OData service to search Agrimetrics fields. For more details see the introduction to the API.

fields

Search for fields matching a filter and select information to be returned.

Note: The result set on a trial access is limited to 100 fields and to a 30 x 30 km square area defined by the following GeoJSON polygon:

 { 'type': 'Polygon', 'coordinates':[ [ [ -0.370400, 52.093330 ], [ -0.380141, 51.823719 ], [ 0.054878, 51.816921 ], [ 0.067239, 52.086470 ], [ -0.370400, 52.093330 ] ] ] }

Try it

Request

Request URL

https://api.agrimetrics.co.uk/field-search/v1/[?$filter][&$select][&$top][&$skip][&daysOfHistoricalWeather][&batch]

Request parameters

$filter (optional)

string

OData filter, for example: $filter=Field/hasAltitude/value eq 20
$select (optional)

string

OData select, for example: $select=Field/SoilLayer
$top (optional)

integer

OData pagination: The number of hits to be included in the result; default 100
$skip (optional)

integer

OData pagination: The number of hits that are to be skipped and not included in the result; default 0
daysOfHistoricalWeather (optional)

integer

Number of days of historical weather to return. Only applicable for daily weather information, such as hasDailyTotalRainfall, and hasDailyMaximumTemperature
batch (optional)

boolean

Switch batching on: Receive large results sets in batches of 100 for a given query; default false. Once switched on, the Batch ID for use in subsequent calls is returned in the X-BatchId header.

Request headers

X-BatchId (optional)

string

Request next batch: Once the batch api has been initiated, pass the returned X-BatchId in subsequent calls to receive the next batch. Continue calling until the results set is empty. Do not supply X-BatchId when starting a new query.
Ocp-Apim-Subscription-Key

string

Subscription key which provides access to this API. Found in your Profile.

Request body

Responses

200 OK

Field Search

Response headers

X-BatchId (optional)

string

The batch id: returned when batching.

Representations

application/ld+json

Sample
Schema

{
  "results": [
    {
      "@id": "string",
      "@type": "Field"
    }
  ],
  "@context": "string"
}

{
  "type": "object",
  "properties": {
    "results": {
      "type": "array",
      "description": "An array of fields",
      "items": {
        "type": "object",
        "properties": {
          "@id": {
            "type": "string",
            "description": "Field identifier",
            "format": "uri"
          },
          "@type": {
            "type": "string",
            "description": "Ontology type",
            "format": "uri",
            "example": "Field"
          }
        }
      }
    },
    "@context": {
      "type": "string",
      "description": "Link to field JSON-LD context",
      "format": "uri"
    }
  }
}

400 Bad Request

Bad OData request

Representations

application/ld+json

Sample
Schema

{
  "statusCode": 0.0,
  "message": "string"
}

{
  "type": "object",
  "properties": {
    "statusCode": {
      "type": "number",
      "description": "HTTP error code"
    },
    "message": {
      "type": "string",
      "description": "Developer friendly error message"
    }
  }
}

Code samples

@ECHO OFF

curl -v -X GET "https://api.agrimetrics.co.uk/field-search/v1/?$filter={string}&$select={string}&$top={integer}&$skip={integer}&daysOfHistoricalWeather={integer}&batch={boolean}"
-H "X-BatchId: "
-H "Ocp-Apim-Subscription-Key: {subscription key}"

--data-ascii "{body}"

using System;
using System.Net.Http.Headers;
using System.Text;
using System.Net.Http;
using System.Web;

namespace CSHttpClientSample
{
    static class Program
    {
        static void Main()
        {
            MakeRequest();
            Console.WriteLine("Hit ENTER to exit...");
            Console.ReadLine();
        }
        
        static async void MakeRequest()
        {
            var client = new HttpClient();
            var queryString = HttpUtility.ParseQueryString(string.Empty);

            // Request headers
            client.DefaultRequestHeaders.Add("X-BatchId", "");
            client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "{subscription key}");

            // Request parameters
            queryString["$filter"] = "{string}";
            queryString["$select"] = "{string}";
            queryString["$top"] = "{integer}";
            queryString["$skip"] = "{integer}";
            queryString["daysOfHistoricalWeather"] = "{integer}";
            queryString["batch"] = "{boolean}";
            var uri = "https://api.agrimetrics.co.uk/field-search/v1/?" + queryString;

            var response = await client.GetAsync(uri);
        }
    }
}

// // This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/)
import java.net.URI;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class JavaSample 
{
    public static void main(String[] args) 
    {
        HttpClient httpclient = HttpClients.createDefault();

        try
        {
            URIBuilder builder = new URIBuilder("https://api.agrimetrics.co.uk/field-search/v1/");

            builder.setParameter("$filter", "{string}");
            builder.setParameter("$select", "{string}");
            builder.setParameter("$top", "{integer}");
            builder.setParameter("$skip", "{integer}");
            builder.setParameter("daysOfHistoricalWeather", "{integer}");
            builder.setParameter("batch", "{boolean}");

            URI uri = builder.build();
            HttpGet request = new HttpGet(uri);
            request.setHeader("X-BatchId", "");
            request.setHeader("Ocp-Apim-Subscription-Key", "{subscription key}");


            // Request body
            StringEntity reqEntity = new StringEntity("{body}");
            request.setEntity(reqEntity);

            HttpResponse response = httpclient.execute(request);
            HttpEntity entity = response.getEntity();

            if (entity != null) 
            {
                System.out.println(EntityUtils.toString(entity));
            }
        }
        catch (Exception e)
        {
            System.out.println(e.getMessage());
        }
    }
}

<!DOCTYPE html>
<html>
<head>
    <title>JSSample</title>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
</head>
<body>

<script type="text/javascript">
    $(function() {
        var params = {
            // Request parameters
            "$filter": "{string}",
            "$select": "{string}",
            "$top": "{integer}",
            "$skip": "{integer}",
            "daysOfHistoricalWeather": "{integer}",
            "batch": "{boolean}",
        };
      
        $.ajax({
            url: "https://api.agrimetrics.co.uk/field-search/v1/?" + $.param(params),
            beforeSend: function(xhrObj){
                // Request headers
                xhrObj.setRequestHeader("X-BatchId","");
                xhrObj.setRequestHeader("Ocp-Apim-Subscription-Key","{subscription key}");
            },
            type: "GET",
            // Request body
            data: "{body}",
        })
        .done(function(data) {
            alert("success");
        })
        .fail(function() {
            alert("error");
        });
    });
</script>
</body>
</html>

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    
    NSString* path = @"https://api.agrimetrics.co.uk/field-search/v1/";
    NSArray* array = @[
                         // Request parameters
                         @"entities=true",
                         @"$filter={string}",
                         @"$select={string}",
                         @"$top={integer}",
                         @"$skip={integer}",
                         @"daysOfHistoricalWeather={integer}",
                         @"batch={boolean}",
                      ];
    
    NSString* string = [array componentsJoinedByString:@"&"];
    path = [path stringByAppendingFormat:@"?%@", string];

    NSLog(@"%@", path);

    NSMutableURLRequest* _request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:path]];
    [_request setHTTPMethod:@"GET"];
    // Request headers
    [_request setValue:@"" forHTTPHeaderField:@"X-BatchId"];
    [_request setValue:@"{subscription key}" forHTTPHeaderField:@"Ocp-Apim-Subscription-Key"];
    // Request body
    [_request setHTTPBody:[@"{body}" dataUsingEncoding:NSUTF8StringEncoding]];
    
    NSURLResponse *response = nil;
    NSError *error = nil;
    NSData* _connectionData = [NSURLConnection sendSynchronousRequest:_request returningResponse:&response error:&error];

    if (nil != error)
    {
        NSLog(@"Error: %@", error);
    }
    else
    {
        NSError* error = nil;
        NSMutableDictionary* json = nil;
        NSString* dataString = [[NSString alloc] initWithData:_connectionData encoding:NSUTF8StringEncoding];
        NSLog(@"%@", dataString);
        
        if (nil != _connectionData)
        {
            json = [NSJSONSerialization JSONObjectWithData:_connectionData options:NSJSONReadingMutableContainers error:&error];
        }
        
        if (error || !json)
        {
            NSLog(@"Could not parse loaded json with error:%@", error);
        }
        
        NSLog(@"%@", json);
        _connectionData = nil;
    }
    
    [pool drain];

    return 0;
}

<?php
// This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/)
require_once 'HTTP/Request2.php';

$request = new Http_Request2('https://api.agrimetrics.co.uk/field-search/v1/');
$url = $request->getUrl();

$headers = array(
    // Request headers
    'X-BatchId' => '',
    'Ocp-Apim-Subscription-Key' => '{subscription key}',
);

$request->setHeader($headers);

$parameters = array(
    // Request parameters
    '$filter' => '{string}',
    '$select' => '{string}',
    '$top' => '{integer}',
    '$skip' => '{integer}',
    'daysOfHistoricalWeather' => '{integer}',
    'batch' => '{boolean}',
);

$url->setQueryVariables($parameters);

$request->setMethod(HTTP_Request2::METHOD_GET);

// Request body
$request->setBody("{body}");

try
{
    $response = $request->send();
    echo $response->getBody();
}
catch (HttpException $ex)
{
    echo $ex;
}

?>

########### Python 2.7 #############
import httplib, urllib, base64

headers = {
    # Request headers
    'X-BatchId': '',
    'Ocp-Apim-Subscription-Key': '{subscription key}',
}

params = urllib.urlencode({
    # Request parameters
    '$filter': '{string}',
    '$select': '{string}',
    '$top': '{integer}',
    '$skip': '{integer}',
    'daysOfHistoricalWeather': '{integer}',
    'batch': '{boolean}',
})

try:
    conn = httplib.HTTPSConnection('api.agrimetrics.co.uk')
    conn.request("GET", "/field-search/v1/?%s" % params, "{body}", headers)
    response = conn.getresponse()
    data = response.read()
    print(data)
    conn.close()
except Exception as e:
    print("[Errno {0}] {1}".format(e.errno, e.strerror))

####################################

########### Python 3.2 #############
import http.client, urllib.request, urllib.parse, urllib.error, base64

headers = {
    # Request headers
    'X-BatchId': '',
    'Ocp-Apim-Subscription-Key': '{subscription key}',
}

params = urllib.parse.urlencode({
    # Request parameters
    '$filter': '{string}',
    '$select': '{string}',
    '$top': '{integer}',
    '$skip': '{integer}',
    'daysOfHistoricalWeather': '{integer}',
    'batch': '{boolean}',
})

try:
    conn = http.client.HTTPSConnection('api.agrimetrics.co.uk')
    conn.request("GET", "/field-search/v1/?%s" % params, "{body}", headers)
    response = conn.getresponse()
    data = response.read()
    print(data)
    conn.close()
except Exception as e:
    print("[Errno {0}] {1}".format(e.errno, e.strerror))

####################################

require 'net/http'

uri = URI('https://api.agrimetrics.co.uk/field-search/v1/')

query = URI.encode_www_form({
    # Request parameters
    '$filter' => '{string}',
    '$select' => '{string}',
    '$top' => '{integer}',
    '$skip' => '{integer}',
    'daysOfHistoricalWeather' => '{integer}',
    'batch' => '{boolean}'
})
if query.length > 0
  if uri.query && uri.query.length > 0
    uri.query += '&' + query
  else
    uri.query = query
  end
end

request = Net::HTTP::Get.new(uri.request_uri)
# Request headers
request['X-BatchId'] = ''
# Request headers
request['Ocp-Apim-Subscription-Key'] = '{subscription key}'
# Request body
request.body = "{body}"

response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
    http.request(request)
end

puts response.body