[英]Rendering mpld3 JSON chart in React
再會。
我最近剛剛遇到mpld3
,我正在嘗試看看它是否能解決我的問題。
我想在 Python 中創建 Matplotlib 圖表,將它們作為 JSON 對象保存到數據庫中,然后在我的 React 網頁中呈現它們。
到目前為止,我已經在 Python 中創建了一個繪圖,使用 Matplotlib 並將其轉換為字典中的 JSON 對象:
fig = plt.gcf()
mpld3.display(fig)
fig_to_dict = mpld3.fig_to_dict(fig)
現在我可以將字典保存到文件中。
我的問題是:然后我可以在我的 React 項目中渲染這個 JSON 圖表嗎? 如果是這樣,我該怎么做?
另一件事是 - 我不能在前端使用 D3,我需要在后端完成所有“圖表制作”。
感謝您的任何幫助!
這不是一個完美的答案,但我似乎正在解決一個類似的問題,而且我似乎已經讓它工作了,所以我按原樣分享我的代碼。 希望它對某人有用。
這是我的反應組件('matPlotLibFig.js'),它呈現一個簡單的圖形
import React from 'react'
import mpld3_load_lib from "./mpld3_load_lib";
import mpld3 from 'mpld3'
import _json from "./plot_b.json"
const MatPlotLibFig = () => {
const fig_name = "fig_el427345810798888193429725"
return <div>
<script>
mpld3_load_lib("https://d3js.org/d3.v5.js", function () {
mpld3_load_lib("https://mpld3.github.io/js/mpld3.v0.5.8.js", function () {
mpld3.remove_figure(fig_name)
mpld3.draw_figure(fig_name, _json);
})
});
</script>
<div id={fig_name}></div>
</div>
}
export default MatPlotLibFig
plot_b.json:
{
"width": 640.0,
"height": 480.0,
"axes": [
{
"bbox": [0.125, 0.11, 0.775, 0.77],
"xlim": [-0.5, 10],
"ylim": [0, 10],
"xdomain": [-0.2, 10],
"ydomain": [0.0, 10],
"xscale": "linear",
"yscale": "linear",
"axes": [
{
"position": "bottom",
"nticks": 11,
"tickvalues": null,
"tickformat_formatter": "",
"tickformat": null,
"scale": "linear",
"fontsize": 10.0,
"grid": {
"gridOn": false
},
"visible": true
},
{
"position": "left",
"nticks": 11,
"tickvalues": null,
"tickformat_formatter": "",
"tickformat": null,
"scale": "linear",
"fontsize": 10.0,
"grid": {
"gridOn": false
},
"visible": true
}
],
"axesbg": "#FFFFFF",
"axesbgalpha": null,
"zoomable": true,
"id": "el91906139874005984112",
"lines": [
{
"data": "data01",
"xindex": 0,
"yindex": 1,
"coordinates": "data",
"id": "el91906139873968544448",
"color": "#000000",
"linewidth": 1.5,
"dasharray": "none",
"alpha": 1,
"zorder": 2,
"drawstyle": "default"
}
],
"paths": [],
"markers": [
{
"data": "data01",
"xindex": 0,
"yindex": 1,
"coordinates": "data",
"id": "el91906139873968544448pts",
"facecolor": "#000000",
"edgecolor": "#FFFFFF",
"edgewidth": 5,
"alpha": 1,
"zorder": 2,
"markerpath": [
[
[
-10.0,
10.0
],
[
10.0,
10.0
],
[
10.0,
-10.0
],
[
-10.0,
-10.0
]
],
[
"M",
"L",
"L",
"L",
"Z"
]
]
}
],
"texts": [],
"collections": [],
"images": [],
"sharex": [],
"sharey": []
}
],
"data": {
"data01": [
[
0.0,
6.0
],
[
1.0,
2.0
],
[
2.0,
8.0
],
[
3.0,
3.0
],
[
4.0,
0.0
],
[
5.0,
7.0
]
]
},
"id": "el91906139874196422128",
"plugins": [
{
"type": "reset"
},
{
"type": "zoom",
"button": true,
"enabled": false
},
{
"type": "boxzoom",
"button": true,
"enabled": false
}
]
}
mpld3_load_lib.js:
const mpld3_load_lib = (url, callback) => {
var s = document.createElement('script');
s.src = url;
s.async = true;
s.onreadystatechange = s.onload = callback;
s.onerror = function () { console.warn("failed to load library " + url); };
document.getElementsByTagName("head")[0].appendChild(s);
}
export default mpld3_load_lib
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