Bugfix 394 roc

[bikegeek]

Pull Request Testing

• Describe testing already performed for these changes:
  
  from the command line, generated the ROC diagram with the following data (PCT linetype):

plot_20231024_192006.data.txt

the following yaml file:

plot_20231024_192006.yaml.txt

to generate this plot:

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

  Generate ROC diagram for the PCT linetype.

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [No]

• Do these changes include sufficient testing updates? [ No]

• Will this PR result in changes to the test suite? [ No]
  
  If yes, describe the new output and/or changes to the existing output:
  

• Please complete this pull request review by Earliest convenience before beta2 release.
  

Pull Request Checklist

See the METplus Workflow for details.

• Add any new Python packages to the METplus Components Python Requirements table.
• Review the source issue metadata (required labels, projects, and milestone).
• Complete the PR definition above.
• Ensure the PR title matches the feature or bugfix branch name.
• Define the PR metadata, as permissions allow.
  Select: Reviewer(s)
  Select: Organization level software support Project or Repository level development cycle Project
  Select: Milestone as the version that will include these changes
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• After the PR is approved, merge your changes. If permissions do not allow this, request that the reviewer do the merge.
• Close the linked issue and delete your feature or bugfix branch from GitHub.

[TatianaBurek]

I was able to create a few ROC plots using METviewer