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Like other "fiddle" type environments such as JSfiddle, ScalaFiddle and Python Fiddle, BDFiddle provides an easy way for non-programmers to generate and play around with metadata and code "snippets" needed to generate metadata or convert/extract data from files they submit to Brown Dog.
Navigate to the Brown Dog website at https://browndog.ncsa.illinois.edu/ and sign up
Click on the BDFiddle button on the left.
or navigate directly to https://browndog.ncsa.illinois.edu/bdfiddle/.
Login with your Brown Dog username and password.
You will be taken to the BDFiddle page itself.
This is what you will see. The whole page is setup to assist the user in:
You can choose from a file on your computer via the Browse button or select URL to go to the location where the data is stored.
Press Get Transformations
Based on the file type that was input a specific list of possible Conversions and Extractions are shown as available for that file.
Select the type of transformation needed from either of the scroll lists.
Press Submit to execute the transformation.
If the output needs to be emailed select the checkbox and input the desired email address.
If a conversion was selected - the Output box will provide a location where the saved file of the desired format is located.
If an extraction was selected - the Output box will provide the desired extracted information.
The below example displays metadata in the Output box generated from a .jpg.
BDFiddle also generates code snippets which can be used to recreate the same Transformation in a local environment if the user needs to repeat the process from within code.
For each language, there are four templates: convert a file from a URL, convert a local file upload, extract from a file from a URL, and extract from a local file upload.
The values for the server, security token, input file, and output format are populated in appropriate template.
Current snippets generated include:
In response to the popularity of Jupyter notebooks and the ease of combining run-able code and documentation in one interface that Jupyter provides, Jupyter functionalities have been added to BDFiddle. In addition to copying the code snippet, a user can download a Jupyter notebook that contains the run-able code that is ready to implement locally (jupyter must be installed) or the user can simply open the notebook as an anonymous user on an NCSA multi-user service that utilizes Tmpnb.
Jupyter templates are JSON files that contain both the raw code (runnable) and mark down (documentation).
Where Jupyter is available two additional buttons appear below the code snippet.
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The buttons enable a user to
The server uses Tmpnb (Temporary Notebook) and employs docker containers. There are two control docker containers and as many notebook containers as needed.
When the files are posted to the server, a notebook container is allotted to the new user in which they can edit and run the Jupyter notebook.
See Jupyter documentation for specific usage of Jupyter notebooks.
https://jupyter.readthedocs.io/en/latest/
Report Problem
Log in and click "Report Problem" in the Navigation bar then you will see the form below:
Then fill in the form with your name and detail of the problem. Screenshot or any file can be uploaded in the attachment.
If the report is sent successfully, you will see the message as follows:
