Question

我试图在python中使用pdal。我从一个超级简单的裁剪开始：

json = """{
    "pipeline":[
        "ARRA-LFTNE_NewYork_2010_000636.las",
        {
            "type":"crop",
            "bounds":"([616766.770,617765.46],[4510733.640,4511649.800])"
        },
        "output.laz"
    ]
}"""

pipeline = pdal.Pipeline(unicode(json,encoding="utf-8"))
pipeline.validate() # check if our JSON and options were good
pipeline.loglevel = 8 #really noisy
count = pipeline.execute()
arrays = pipeline.arrays
metadata = pipeline.metadata
log = pipeline.log

json来自pdal的hp https://www.pdal.io/pipeline.html#pipeline，应简单地裁剪图像。但是，在验证时它失败并出现错误：

Traceback (most recent call last):
  File "/src/test.py", line 69, in <module>
    pipeline.validate() # check if our JSON and options were good
  File "/usr/local/lib/python2.7/dist-packages/pdal/pipeline.py", line 42, in validate
    return self.p.validate()
  File "pdal/libpdalpython.pyx", line 93, in pdal.libpdalpython.PyPipeline.validate (pdal/libpdalpython.cpp:2639)
RuntimeError: Couldn't create filter stage of type 'crop'.

我已经尝试过运行我在网上找到的其他小例子，但我一直在创建＆＃34;无法创建xx＆＃34; -error类型的过滤阶段！

我在图片的dockerfile上运行它：pdal / pdal：1.5

Answer 1

再次查看您关联的网站。 crop过滤器（docs here）使用选项bounds，而非dimension来指定边界框。在PDAL中，dimension表示点数据的维度（X，Y，Z，红色，绿色，蓝色等）。

Dimensions docs here

Answer 2

您的过滤器type应该是filters.crop，而不只是crop。

PDAL：无法创建类型＆＃39; {＆＃39;

2 个答案: