Configuring RVPipelines Implementation of get_config() or get_configs()

[ammarsdc]

Hi. In your documentation here: https://docs.rastervision.io/en/latest/pipelines.html#configuring-rvpipelines

Each (subclass of) RVPipeline is configured by returning an instance of (a subclass of) RVPipelineConfigs from a get_config() function in a Python module. It’s also possible to return a list of RVPipelineConfigs from get_configs(), which will be executed in parallel.

I could not find the implementation of get_config() or get configs() in any of classes implementing RVPipeline as mentioned there. May I know what is that means?

Thanks!

[AdeelH]

get_config() is defined by the user and returns a pipeline config. See, for example, https://github.com/azavea/raster-vision/blob/master/rastervision_pytorch_backend/rastervision/pytorch_backend/examples/semantic_segmentation/isprs_potsdam.py#L33 .

When you run Raster Vision from the command line, it runs this function to get the pipeline config and then proceeds to run the pipeline.

[ammarsdc]

Thanks for the response @AdeelH. Preparing a pipeline file as in reference you share here was exactly what we were successfully did here. We're so grateful with what RV could offers up to this point.

However when we rereading your documentation this time, what we do understand from the quoted statement above is any class derived from RVPipeline such as SegmentationPipeline and the others were expected to implement both methods, get_config() and get_configs() in each of this derived class.

But what is supposed to say that these derived classes is expecting for a pipeline .py file that has get_config() or get_configs() in it.

Am I correct?

[AdeelH]

Preparing a pipeline file as in reference you share here was exactly what we were successfully did here

In that case, you are using it correctly and don't need to change anything.

what we do understand from the quoted statement above is any class derived from RVPipeline such as SegmentationPipeline and the others were expected to implement both methods, get_config() and get_configs() in each of this derived class

This is incorrect. These classes do not have to implement these.

that these derived classes is expecting for a pipeline .py file that has get_config() or get_configs() in it.

Mostly correct. The derived classes don't care about get_config() but rather the pipeline config that it returns. get_config() is executed in rastervision.pipeline.cli.

[ammarsdc]

Okay got it. Thanks @AdeelH