I'm using Vega for data visualization. Vega requires data which is shaped as an array of objects:
const accepted = [
{ num: 1, char: 'A' },
{ num: 2, char: 'B' },
{ num: 3, char: 'C' },
]
However, for sending data (e.g. via JSON), it is not efficient as the keys num and char are repeated multiple times. A more efficient way is sending the data as follows:
const efficient = {
num: [1, 2, 3 ],
char: ['A', 'B','C']
}
Right now I'm manually transforming the efficient structure above into the accepted structure before passing it into Vega. Is there any Vega transforms that I can use so taht I can pass efficient without having to transform it into accepted?
Use the flatten transform which should do what you need.