从 netcdf 文件访问数据并在浏览器中显示它

Question

问题是，即使我的 netcdf 文件包含很多值，我也只获得第一个值作为输出。

import { NetCDFReader } from "netcdfjs";

fetch(
  "http://localhost:8000/test/example_files/synthetic_square/dzdata_files/0/0_0.nc",
  { method: "GET" },
)
  .then((response) => response.body.getReader().read())
  .then((data) => {
    let netcdfReader = new NetCDFReader(data.value);
    let heights = netcdfReader.getDataVariable("heights");
    let allHeights = new Float64Array(heights);

    console.log(heights);
    console.log(allHeights);
  });

这是输出：

Array [ 0.2859144424892198 ]
0: 0.2859144424892198
length: 1
<prototype>: Array []

如何获取所有值？这里可能出了什么问题？

Answer 1

看起来

read()

方法一次只能获取一个值。

如果你尝试这样的事情会怎样？

import { NetCDFReader } from "netcdfjs";

fetch(
  "http://localhost:8000/test/example_files/synthetic_square/dzdata_files/0/0_0.nc",
  { method: "GET" },
)
  .then((response) => response.body.getReader())
  .then((reader) => {
    let data;
    while (data = reader.read()) {
        let netcdfReader = new NetCDFReader(data.value);
        let heights = netcdfReader.getDataVariable("heights");
        let allHeights = new Float64Array(heights);
        console.log(heights);
        console.log(allHeights);
    }
  });