Necessity of UseCase_III getrow function

[j-sarmiento]

I am wondering if it is necessary to include the code block that defines the function "getrow" in the UseCase_III notebook. I think there are easier ways to search for the data. For example, it would be easier to include the keywords "magnitude color" in the initial search for data (although this would require another registry search for step 3 since that table doesn't include the words "magnitude" and "color"). Another, probably better, way would be to use the new ucd search constraint introduced in pyvo 1.4.