### What problem does this feature solve? Hello, How can I use eCharts this way? I couldn't find an example in the documentation. {"x": "2024-07-18T00:00:00.000000Z","y": 137.5}  [Example](https://echarts.apache.org/examples/en/editor.html?c=line-stack&code=PYBwLglsB2AEC8sDeBYAULWZjADaRAC5l1NMwAnCAc2oFMLiByAQwA8IBnJgGlLPZcACsAjQwDYqgxlyATxB1mAYwrBO3PjNmr1nAMpg5uJSW2zYyvMEawmAYgCcz3v1kBfLR6-xP_E_TQACZSbrBBLGAsxADaALo-fjJsAIIcnLFh0haw0CwAtqZMERKu5vKKzJCFZd78CfxyaVyZ5tkWRpV2AG4suACudLUWeYXMABJ0kcOygpwAMiwARnS4oeVkAGY2-ZEStkxIvQN07rD5uDNkSXVtYRVFx4NXmKNFAMJ4QS-wc4srazMOUw2wouzA-2YRz6g3cPxu1x8DRknAYEDoGVgMSy9zIACI3njiHjJpE8T4cnjOnQibA8UsWBRybjMHiSixadiNjl2sDgXi2LS8QAmAAMwoALABaUUAdilAEYABwAFVFosI6s1ooAdOr9aKAFrM7l8ulyWkKgDMsp1AFYWRYEWagS6LAKhWLJTL5cq1Qrtdq9QajSa3e6LcQFRKFY7buHeeG6YLiV7pXLFarxYH1cGDcaKUm8ZHYNbbcKHab427E-GPanxenfVmrTndSHQ4W6yWy3HEX3MLW3fW6WmfZm1RK23n9QWBxHLTadbLK-HnWahy6RyLG-O_aK7dOO3Oq_ye1bdSv5-u-Zuzduxxn9wA2I8hk9J_E9iXC69d4F3nyD67k-Waym--Zhp-5qLkqOoVn-86AfyKajiBzZqkqEGzlBn7FpaMaIaeg7zrIwHeqBaqONh6oftB-FRoRxG-P-PKkfiqE7hRGEKhqWq5seuFFiWYp2vaREJuxrKcY-PEBvx7bvkJ3a0sKakSTWUnJp66ETgqwo0Z2WkMbk_S4LgGkushlIybpfrWoZdF4SW0BmRZzE3gBxm2dxelTgpM60cpw4uW5lkbt5Om-fZh4BYJrH3qF5nhbekUNtFqoKq-cVKQlQFJe5a55WQ1nuj5TZ6eBOWQcVlIFSlXnMWR5V7plWHVThtULsQrnJR5XWlc1UUVfZ1EdUFXVkfV_VIWlaEZSqYqOcFW7TUVs1NRxw2tYt8l8YpNXGWtbqeWxm3SdtlFqctk1frSvWFSdA1zVxI2qsKrbjUZ50wT1YUeY6cRhOud4EgUNLEp8uBBCtdLUkKuBiDSCVspEHKtJJP3kW9ar7UG8VHapjgSmJsrPg1Z3Qdp6U46Ke347lhPEMKsoCbGM3MYNW00zt2ZfU5wmqZKtrOBTFhcxdPOUaKn37YF31UyZH3Play6ymLsgS9T820_5csE1jIlWs-ooayVL2yROB43UzsDK6rspKmbJFYy10vZfrjOG5adps87rp4W7GFyjb3tRs4jg6o4Tsc5jitB1b7We4dYd244fux5pruXcHY3J51tvCsTtqO_7WvYztvGh4rInp-27PrZzFt2Zl9MCV7NdE-qZfNwt-nV_RIkk2JCrq5nVm9zjDn87D-WqUqGeN3H9EJ_ZesMynnfM8XUeOD32dSzxsX5xNhfE5Hz4x0vWfxznekexvBep0Xvv77fh-VQPzm0he3fjxFB8daVyTo_U-z9HCv3_qlQBr1K551AQrQeP99RvxXnfP0S0Z63VZCWX-psoGNXfkAq6bcDpPy3rAPBqDA7oPegZLBZ9fZ6gbk9DaRDYFXVlgggWKlt5_zXIDYG9QtDuAANxAA) ### What does the proposed API look like? [Example](https://echarts.apache.org/examples/en/editor.html?c=line-stack&code=PYBwLglsB2AEC8sDeBYAULWZjADaRAC5l1NMwAnCAc2oFMLiByAQwA8IBnJgGlLPZcACsAjQwDYqgxlyATxB1mAYwrBO3PjNmr1nAMpg5uJSW2zYyvMEawmAYgCcz3v1kBfLR6-xP_E_TQACZSbrBBLGAsxADaALo-fjJsAIIcnLFh0haw0CwAtqZMERKu5vKKzJCFZd78CfxyaVyZ5tkWRpV2AG4suACudLUWeYXMABJ0kcOygpwAMiwARnS4oeVkAGY2-ZEStkxIvQN07rD5uDNkSXVtYRVFx4NXmKNFAMJ4QS-wc4srazMOUw2wouzA-2YRz6g3cPxu1x8DRknAYEDoGVgMSy9zIACI3njiHjJpE8T4cnjOnQibA8UsWBRybjMHiSixadiNjl2sDgXi2LS8QAmAAMwoALABaUUAdilAEYABwAFVFosI6s1ooAdOr9aKAFrM7l8ulyWkKgDMsp1AFYWRYEWagS6LAKhWLJTL5cq1Qrtdq9QajSa3e6LcQFRKFY7buHeeG6YLiV7pXLFarxYH1cGDcaKUm8ZHYNbbcKHab427E-GPanxenfVmrTndSHQ4W6yWy3HEX3MLW3fW6WmfZm1RK23n9QWBxHLTadbLK-HnWahy6RyLG-O_aK7dOO3Oq_ye1bdSv5-u-Zuzduxxn9wA2I8hk9J_E9iXC69d4F3nyD67k-Waym--Zhp-5qLkqOoVn-86AfyKajiBzZqkqEGzlBn7FpaMaIaeg7zrIwHeqBaqONh6oftB-FRoRxG-P-PKkfiqE7hRGEKhqWq5seuFFiWYp2vaREJuxrKcY-PEBvx7bvkJ3a0sKakSTWUnJp66ETgqwo0Z2WkMbk_S4LgGkushlIybpfrWoZdF4SW0BmRZzE3gBxm2dxelTgpM60cpw4uW5lkbt5Om-fZh4BYJrH3qF5nhbekUNtFqoKq-cVKQlQFJe5a55WQ1nuj5TZ6eBOWQcVlIFSlXnMWR5V7plWHVThtULsQrnJR5XWlc1UUVfZ1EdUFXVkfV_VIWlaEZSqYqOcFW7TUVs1NRxw2tYt8l8YpNXGWtbqeWxm3SdtlFqctk1frSvWFSdA1zVxI2qsKrbjUZ50wT1YUeY6cRhOud4EgUNLEp8uBBCtdLUkKuBiDSCVspEHKtJJP3kW9ar7UG8VHapjgSmJsrPg1Z3Qdp6U46Ke347lhPEMKsoCbGM3MYNW00zt2ZfU5wmqZKtrOBTFhcxdPOUaKn37YF31UyZH3Play6ymLsgS9T820_5csE1jIlWs-ooayVL2yROB43UzsDK6rspKmbJFYy10vZfrjOG5adps87rp4W7GFyjb3tRs4jg6o4Tsc5jitB1b7We4dYd244fux5pruXcHY3J51tvCsTtqO_7WvYztvGh4rInp-27PrZzFt2Zl9MCV7NdE-qZfNwt-nV_RIkk2JCrq5nVm9zjDn87D-WqUqGeN3H9EJ_ZesMynnfM8XUeOD32dSzxsX5xNhfE5Hz4x0vWfxznekexvBep0Xvv77fh-VQPzm0he3fjxFB8daVyTo_U-z9HCv3_qlQBr1K551AQrQeP99RvxXnfP0S0Z63VZCWX-psoGNXfkAq6bcDpPy3rAPBqDA7oPegZLBZ9fZ6gbk9DaRDYFXVlgggWKlt5_zXIDYG9QtDuAANxAA)