Accessing a variant object

I have a variant object of the following form

ContentIndex:     Type:           Name:             Property:           Value:
   1                 parameter       A                 InitialAmount       5
   2                 species         B                 InitialAmount       10
   3                 compartment     C                 InitialAmount       15

How to I access the rows with type species alone?

Thanks a lot

Answer 1

[Jeremy Huard]

Hi Deepa,

you can access the variant content with the dot notation.

If your variant is called v, v.Content will be an array of cell array with one row per component in this variant.

That being said, I like to convert variants into a table to handle it. For this you can use the following function:

function tableObj = sbiovariant2table(variantObj)

% tableObj = sbiovariant2table(variantObj)
%
% Converts the content of a variant to a Table that can be exported to
% Excel with writeTable

content = vertcat(variantObj.Content{:});
tableObj = cell2table(content,'VariableNames',{'Type','Name','Property','Value'});

tableObj.Name = string(tableObj.Name);
tableObj.Type = categorical(tableObj.Type);
tableObj.Property = categorical(tableObj.Property);

tableObj.Properties.Description = variantObj.Name;

end

With this function you can retrieve all species easily:

tableVar = sbiovariant2table(v);
speciesInVar = tableVar(tableVar.Type == 'species',{'Name','Value'})