Simplify divergence usage by making cov optional #44
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Previously, invoking the divergence function (and any functions that invoke the divergence function, like snapshot) required the P3 and coverage information to be stored in separate tables and connected by a key. This setup is convenient for data drawn from a database that uses this representation already, but is inconvenient for users reading in data that directly associates a coverage string with each performance result. This commit makes the cov DataFrame optional: if it exists, then behavior is the same as before; if it does not exist, then the library looks for coverage information stored alongside the P3 data. Signed-off-by: John Pennycook <john.pennycook@intel.com>
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Previously, invoking the divergence function (and any functions that invoke the divergence function, like snapshot) required the P3 and coverage information to be stored in separate tables and connected by a key.
This setup is convenient for data drawn from a database that uses this representation already, but is inconvenient for users reading in data that directly associates a coverage string with each performance result.
This commit makes the cov DataFrame optional: if it exists, then behavior is the same as before; if it does not exist, then the library looks for coverage information stored alongside the P3 data.
Related issues
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Proposed changes
covoptional when callingdivergence.covoptional when callingsnapshot(which callsdivergenceinternally).