![]() But it’s validated in the same way, by testing. Just like writing the first version of code, writing your JSONPath query or XPath query the first time is also usually never right. Developers usually tackle this with JSONPath syntax or its predecessor, XPath, which is XML based. Usually, these APIs return loads of data, and it needs some sifting in order to get what you really want. When dealing with web APIs, data is often represented in JSON, and even still, XML. The best way to validate it is to test it. As a developer, the initial code you write often isn’t perfect or immune from bugs. While the last example is heavily based on a generic visualization use case, this next example goes beyond that. Visualizer line graph using World Trading Data API, displaying trade volume of Snapchat for the day Using Visualizer when testing Check out the Postman template for this line graph here. Even better, this can be the start of a web app that users can utilize to make better financial decisions in the stock market. Using this information with Postman Visualizer, you can make better stock financial visualizations. This visualization is powered by Chart.js and World Trading Data, now MarketStack. Sure, you can get this information from brokerages, but when you have the raw data, you can create visualizations that go farther than the standard ones you might otherwise see. In my demo video How to Visualize Data in Postman, I show how we can monitor how stocks are performing in the stock market over time. ![]() When you provide more context to these visualizations, you gain insights that have implications far beyond numbers. Using powerful Javascript libraries such as Chart.js or D3.js shows how you can make meaning from the data you get from your APIs. Postman makes it easy with out-of-the-box Visualizer templates. Sample heat map Visualizer using D3.js from Postman Learning Center Let’s “Visualize” the numbers To learn more about Postman Visualizer, let’s take a closer look at some of these developer use cases, as well as some unexpected use cases that show how Visualizer can also help you consume your custom-built web tools. This addition is huge for both frontend and backend web developers. Because of this, Postman now provides you that capability within its user interface. With web APIs being extremely popular for working with data, it only makes sense to provide new means to consume it. Postman Visualizer is your API visualization companion. But when you introduce a visual concept to present your data, thoughts click, your mind gets creative, and you see insights that you would’ve never seen just by looking at plain numbers. It can be difficult to really capture the impact a set of data has just by looking at straight numbers. In this post, I’ll be highlighting one incredibly helpful feature that’s capable of much more than it looks: Postman Visualizer.ĭata itself can seem very bland. Its broad variety of built-in developer tools make it a no-brainer for anyone working with web APIs or other web technologies. As the creator of Dev Odyssey, a YouTube channel dedicated to providing quality IT tutorials, I use, explore, present, and teach Postman frequently. In the age of web APIs, no other platform shines more than Postman. This is a guest post written by Orest Danylewycz, founder of Dev Odyssey and information security engineer at Westfield.
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