/*
Data fetched from server as JSON String with structure:
{
"area": "area-label",
"years": ["year-1-label", "year-2-label", ...],
"crimesByCategory": {
"category-1-label": [year-1-data, year-2-data, ...],
"category-2-label": [year-1-data, year-2-data, ...],
...
}
}
Data supplied to graph module as Javascript object with structure:
{
area: 'area-label',
yearLabels: ['year-1-label', 'year-2-label', ...],
categoryLabels: ['category-1-label', 'category-2-label', ...],
yearData: {
'year-1-label': [category-1-data, category-2-data, ...],
'year-2-label': [category-1-data, category-2-data, ...],
...
}
}
*/