NDVI MAML implementation

ndvi-maml.json

{
  "id": "a1460c96-8377-4bf1-aad4-18a6e47093c6",
  "args": [
    {
      "id": "fe1763d4-9b4d-4eba-9968-f7d707869d7f",
      "args": [
        {
          "id": "67013aad-21c5-4e7f-b8bd-5910e92aa425",
          "type": "src",
          "metadata": {
            "label": "NIR"
          }
        },
        {
          "id": "a3c93582-a086-44e8-8bdf-0b2ab69f91d0",
          "type": "src",
          "metadata": {
            "label": "VIS"
          }
        }
      ],
      "apply": "-",
      "metadata": {
        "label": "NDVI - Subtraction"
      }
    },
    {
      "id": "b7315337-b4fc-45b7-951a-83f53703e76b",
      "args": [
        {
          "id": "67013aad-21c5-4e7f-b8bd-5910e92aa425",
          "type": "src",
          "metadata": {
            "label": "NIR"
          }
        },
        {
          "id": "a3c93582-a086-44e8-8bdf-0b2ab69f91d0",
          "type": "src",
          "metadata": {
            "label": "VIS"
          }
        }
      ],
      "apply": "+",
      "metadata": {
        "label": "NDVI - Addition"
      }
    }
  ],
  "apply": "/",
  "metadata": {
    "label": "NDVI - Division"
  }
}