A directory watch stream tells the Formant agent running on a device to watch a particular directory, and upload any new files that appear in that directory as File, Image or Point cloud datapoints.
This guide will teach you how to add a directory watch stream.
- In Formant, in the upper-left corner, open the menu and click Settings.
- Click Devices, and then click on the device you want to configure.
- Click the Telemetry tab, and then click Add Stream.
- Click Directory Watch. This will open the New Directory Watch Stream configuration window:
|Telemetry stream name
|Give the stream a name.
|If ON, this stream will store data locally on your device, and only upload data to Formant when you click Retrieve on-demand data.
Rate limit controls the rate at which datapoints are added to the on-device buffer. For more information, see On demand streams.
If OFF, this stream will ingest periodically.
Rate limit controls the rate of data ingestion.
|Only applicable for
sensor_msgs/CompressedImage streams. Choose whether you want images ingested on this stream to be encoded as a video.
|Only applicable for JSON and text streams. Choose a configuration schema for this stream.
|Specify the absolute directory path on the device. This directory must be read-accessible to the agent process.
|If you specify a file extension, only files with that extension will be ingested.
File extensions must start with a period (
|Choose the datapoint type you want files added to this directory to be ingested as:
File ingests each new file in the directory as a file data point. You can then download the file from this module.
Image ingests each new file as an image data point (supports
Point Cloud ingests each new file as a point cloud data point (supports
|Add tags (e.g.
key: value) (optional)
|Add tags to each datapoint of this stream. For more information on tags, see Configure access levels.
|Rate limit (Hz) (optional)
On demand is ON: Set the rate at which data is added to the on-device buffer. Data in the on-device buffer will be ingested by the agent when you click Retrieve on-demand data. For more information, see On demand streams.
On demand is OFF: Set the rate at which data is ingested.
The default rate is 0.5 Hz.
- When you're finished configuring your stream, click Done, and then Save.
Once you've added a stream to your device, your next step is to add it to a view in Formant.
Add the streams you want to visualize, and then move on to Viewing data in Formant.
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Updated about 1 month ago