我试图找出一种方法来在gdal.Warp()中使用进度条来显示已完成的工作量。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
参数报告从0到1的进度,但只有在gdal.warp完成下载裁剪图像后才会调用它。
答案 0 :(得分:1)
您可以通过'gdal.Warp'(文档:https://gdal.org/python/)中的'kwargs'参数为进度添加回调函数。
代码:
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