将进度条添加到 gdal.Warp()

我试图找出一种在 gdal.Warp() 中使用进度条来显示工作完成情况的方法。对于进度条，我使用 Tqdm 和 gdal.Warp() 用于从远程 URL 裁剪图像

def getSubArea(url):
  vsicurl_url = '/vsicurl/' + url
  output_file = 'someID_subarea.tif'
  gdal.SetConfigOption('GDAL_HTTP_UNSAFESSL', 'YES')
  gdal.Warp(output_file, vsicurl_url, dstSRS='EPSG:4326', cutlineDSName='area.geojson', cropToCutline=True)

我知道有callback报告从 0 到 1 的进度的参数，但仅在 gdal.warp 完成下载裁剪图像后调用。

您可以通过“gdal.Warp”中的“kwargs”参数添加进度回调函数（文档：https://gdal.org/python/ https://gdal.org/python/).

Code:

def getSubArea(url):
  vsicurl_url = '/vsicurl/' + url
  output_file = 'someID_subarea.tif'
  # Data you want to pass to your callback (goes in to unknown parameter)
  es_obj = { ... }
  kwargs = {
    'dstSRS': 'EPSG:4326',
    'cutlineDSName': 'area.geojson',
    'cropToCutline': True,
    'callback': progress_callback,
    'callback_data': es_obj
  }
  gdal.SetConfigOption('GDAL_HTTP_UNSAFESSL', 'YES')
  gdal.Warp(output_file, vsicurl_url, **kwargs)

def progress_callback(self, complete, message, unknown):
  # Calculate percent by integer values (1, 2, ..., 100)
  percent = floor(complete * 100)
  # Code for saving or using percent value
  ...

关于进度回调：https://gdal.org/api/cpl.html#_CPPv416GDALProgressFunc https://gdal.org/api/cpl.html#_CPPv416GDALProgressFunc