从flask，如何将matplotlib图图像发送到JSON对象? [英] From flask, how to send the matplotlib plot image into JSON object?

问题描述

我们正在尝试创建一个与前端的React和后端的Flask一起使用的API.作为此过程的一部分，需要显示的输出包括四个实体:

We are trying to create an API that works with React on the frontend and Flask on the backend. As a part of this, the output that needs to be displayed includes four entities:

2张图像(使用matplotlib生成) 2弦. 我已经将两个字符串都嵌入到JSON对象中，但是事实证明图像很困难.

2 images (generated using matplotlib) 2 strings. I have embedded both strings into a JSON object but the images are proving to be difficult.

有没有一种方法不存储这些图像，而直接将生成的matplotlib图像嵌入到JSON对象中?大多数方法都要求我们指定图像文件名，但是是否可以跳过保存文件的方法? sendfile()无效，因为我们有多个输出，而我们的最终目标是JSON响应.

Is there a way to not store these images and directly embed the generated matplotlib images into the JSON object? Most methods require us to specify the image file name but is there a way to skip saving the files? The sendfile() wouldn't work because we have multiple outputs and our final objective is the JSON response.

试图创建一个临时文件并读取它，这会生成一个缓冲流吗?我认为Base64不适用于此吗?

Tried creating a temporary file and reading it and this is generating a Buffered Streams ? Base64 would not apply on this I think?

预先感谢您的帮助.

推荐答案

https://github.com/mpld3 /mpld3 mpld3提供了一个基于D3的自定义独立javascript库，该库可解析绘图的JSON表示形式. mpld3 python模块提供了一组例程(使用mplexporter框架)解析matplotlib图并输出mpld3.js可读的JSON描述.

https://github.com/mpld3/mpld3 mpld3 provides a custom stand-alone javascript library built on D3, which parses JSON representations of plots. The mpld3 python module provides a set of routines which parses matplotlib plots (using the mplexporter framework) and outputs the JSON description readable by mpld3.js.

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