How do the JSON output and object description table of currency fluctuation API made by Fixer function?

In this article, I will clarify the structure of the object table and JSON output of the Fixer currency fluctuation API. As a programmer, you are likely familiar with these data formats and how they can be used to organize and transmit information. However, it's important to understand the specific structure of the data returned by the Fixer API in order to effectively integrate it into your projects. By the end of this article, you will have a clear understanding of the object table and JSON output of the Fixer API and be better equipped to make use of the valuable currency fluctuation data it provides.

Object and Description

1. success: Returns true or false depending on whether or not your API request has succeeded. This object is useful for handling error cases where the API request fails.

2. fluctuation: Returns true if a request to the fluctuation endpoint is made. This object is specific to the Fixer API and indicates whether the requested data represents currency fluctuations over time.

3. start_date: The start date of your time frame. This object specifies the beginning of the time period for which exchange rate data is requested.

4. end_date: The end date of your time frame. This object specifies the end of the time period for which exchange rate data is requested.

5. base: Returns the three-letter currency code of the base currency used for this request. This object indicates the currency used as a reference for exchange rate data in the request.

6. rates: Returns exchange rate data for the currencies you have requested. This object contains a nested structure with exchange rate data for the requested currencies.

7. rates > start_rate: Returns the exchange collected on your start date. This nested object specifies the exchange rate for a particular currency on the start date of the requested time period.

8. rates > end_rate: Returns the exchange collected on your end date. This nested object specifies the exchange rate for a particular currency on the end date of the requested time period.

9. rates > change: Returns the change (decimal number) of the given currency rate between your start and end date. This nested object specifies the absolute change in exchange rate for a particular currency between the start and end dates of the requested time period.

10. rates > percentage_change: Returns the percentage change of the given currency rate between your start and end date. This nested object specifies the percentage change in exchange rate for a particular currency between the start and end dates of the requested time period.

The information in the table is useful for anyone who needs to retrieve exchange rate data for specific time periods and currencies using the Fixer API. The objects in the table provide detailed information about the data that is returned by the API, including whether the request was successful, the time period specified in the request, and the currencies for which exchange rate data is available. In addition, the nested structure of the "rates" object provides detailed information about the exchange rates for each currency on the start and end dates of the requested time period, as well as the absolute and percentage changes in exchange rate over that time period. This information can be used by developers and data analysts to track currency fluctuations and make informed decisions about financial transactions.

Clarifying JSON output

The JSON output consists of a set of key-value pairs, where each key represents an object that contains specific information about currency exchange rates for a specified time period. The "success" key indicates whether the request to the API was successful, while the "fluctuation" key indicates whether the data returned is for a fluctuation request. The "start_date" and "end_date" keys represent the start and end dates of the specified time period respectively, while the "base" key represents the base currency used for the request (in this case, the euro). The "rates" key contains a nested set of key-value pairs, where each key represents a currency code and each value represents an object containing information about the exchange rates for that currency. For each currency, the "start_rate" and "end_rate" keys represent the exchange rate for that currency on the start and end dates of the specified time period, respectively. The "change" key represents the absolute change in the exchange rate over the specified time period, while the "change_pct" key represents the percentage change in the exchange rate over the same time period.

{
"success":true,
"fluctuation":true,
"start_date":"2018-02-25",
"end_date":"2018-02-26",
"base":"EUR",
"rates":{
"USD":{
"start_rate":1.228952,
"end_rate":1.232735,
"change":0.0038,
"change_pct":0.3078
},
"JPY":{
"start_rate":131.587611,
"end_rate":131.651142,
"change":0.0635,
"change_pct":0.0483
},
[...]
}
}

Concluding

In this article, we have discussed the object table and JSON output for the Fixer currency fluctuation API. The object table provides a detailed overview of the objects and sub-objects returned by the API, while the JSON output provides a specific example of the data that is returned for a given request. We have also discussed the usefulness of this information for developers and data analysts who need to retrieve and analyze exchange rate data for specific time periods and currencies. Overall, understanding the object table and JSON output for the Fixer API can be valuable for anyone who needs to work with exchange rate data in their professional or personal pursuits.

Footnote

It is possible to request access to the Fixer currency fluctuation API through the third-party data marketplace of Worldindata. By accessing this marketplace, users can browse and search through a variety of datasets, including currency exchange rate data provided by the Fixer API. To gain access to the API, users must first create an account on the Worldindata platform, and then request access to the specific dataset they are interested in. Then, users can use the API to retrieve and analyze exchange rate data for specific time periods and currencies. This can be particularly useful for developers, data analysts, and other professionals who need to work with currency exchange data in their work.