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ncglobe

v0.1.3

Published

Browser viewer for NetCDF/HDF files: folders, slices, satellite L2 swaths, composites and a rotating globe

Readme

ncglobe

npm release tests license python platforms

A local viewer for NetCDF / HDF files — browse folders, plot any variable, satellite L2 swaths drawn with their real pixel footprints, multi-file composites, and a rotating globe. Runs on your own machine; nothing is uploaded.

在自己電腦上看 NetCDF / HDF 檔的工具,用法類似 Panoply:左邊瀏覽資料夾,右邊看檔案結構、畫任一變數,衛星逐軌(L2)資料用真實像素角點畫,可以把多個檔合成,還能放到會轉的地球儀上。資料不會上傳到任何地方。

ncglobe:2026-01-02 全球 14 軌 Sentinel-5P NO₂ 合成,地球儀

安裝 Install

npm(macOS Apple 晶片 / Intel、Windows) —— 不需要 Python,一個指令裝好:

npm install -g ncglobe
ncglobe ~/data                 # 打開瀏覽器 http://127.0.0.1:8765,讀 ~/data 底下的檔

需要 Node.js 18 以上。npm 只會下載你這台電腦平台的執行檔(約 130 MB)。

macOS App —— 到 Releases 下載 ncglobe-macos-arm64.zip,解壓後拖進「應用程式」。雙擊開啟會先問要看哪個資料夾;Finder 的 .nc/.hdf 檔也能「打開方式 → ncglobe」。第一次開啟若被擋,按右鍵 →「打開」。

從原始碼 From source(Python 3.11+、uv):

git clone https://github.com/Alex870521/ncglobe && cd ncglobe
uv venv && uv pip install -e .
.venv/bin/ncglobe ~/data

用法 Usage

ncglobe ~/data                                  # 指定要看的資料夾(可以給好幾個)
ncglobe ~/data --port 8800                      # 換 port
ncglobe some_file.nc                            # 直接打開這個檔
ncglobe --install-gshhg                         # 下載最細的 GSHHG 海岸線(約 150 MB)

伺服器只聽 127.0.0.1、只讀啟動時指定,或之後在網頁上用「開啟資料夾…」(⌘O / Ctrl+O;App 版是選單「檔案 › 開啟…」)選的資料夾。網頁上選過的資料夾會記在 ~/.config/ncglobe/folders.json,下次啟動自動加回來。macOS 上另外會自動列出外接硬碟、隨身碟與網路磁碟(瀏覽器版與 App 都會;/Volumes 底下 Finder 看得到的那些,啟動後才插上的重新整理頁面就會出現);不想要就加 --no-volumes。

使用手冊:docs/使用手冊.md(任務導向,附截圖)。

功能 Features

  • 左側只列 .nc .nc4 .netcdf .h5 .hdf5 .he5 .cdf .hdf(HDF4,例如 MODIS)與底下有這些檔的資料夾;年/月分層的資料夾合成一層,搜尋框會連子資料夾一起找。
  • 規則網格畫成 heatmap;二維經緯度(Sentinel-5P、GEMS、MODIS L2)用真實像素角點畫,不會有洞;放大到原生解析度。
  • 平面地圖與 WebGL 地球儀;圖層:海岸線、國界、經緯線。
  • 點選查值、時間序列(可下載 CSV)、播放時間維度、單位換算(mol m⁻² ↔ molec cm⁻² ↔ DU…)。
  • 合成:多軌拼接、多日平均、A−B 差值,可匯出 CF NetCDF;匯出 PNG。
  • 設定:主題、地圖預設值;有新版時側欄底部會出現「更新」。

開發 Development

uv pip install -e '.[dev]' && .venv/bin/pytest          # 測試
uv pip install -e '.[build]'
.venv/bin/python scripts/build_exe.py --onedir          # 這個平台的執行檔(dist/ncglobe/)
.venv/bin/python scripts/build_exe.py --app             # macOS:dist/ncglobe.app
.venv/bin/python scripts/build_npm.py                   # npm 套件(dist/npm/)

發佈:推一個 v* 標籤,GitHub Actions(.github/workflows/release.yml)會在 macOS(arm64、x64)與 Windows 上建執行檔,發佈到 npm 與 GitHub Releases。

授權與資料來源 License & data

ncglobe 以 MIT 授權。執行檔內含: