helgasoft

:bug: confirmed, _media_ silently crashes _replaceMerge_ - [Demo Code](https://echarts.apache.org/examples/en/editor.html?c=line-simple&code=PYBwLglsB2AEC8sDeAoWsD0HYCcCmAtsAG56wBEAWubAGY7AGwDkBeAJhAIbOxjCwA7hDDQ8AZ3GwARgFcA5mliU2nLgC5YAbSXoksAI6y8OAJ6b9BLgA8A6hHZgAFpoDMABnewAvgBpYuuiwoJAwFrDyOA7h_CBunj7-ADZ48njQ7OHiTsCCmmA4xj6JAUGJgahl6EYm5siwBBDQ9o4usB5efoHoIVDQ4ZHR9bGaAKydyanpmfXZuZq0XEniZN4-gd5KALq-StYAgtYQ4haB7FxgGtrMALIwzP7MACrGDyy2HG_PTrJfAGJRL4AZQuwNk0GYWyUXXQpkOxwsMNgKyiEk0OjKlSq50u6IAjON_AAmDzEokAFmJeIAHP48a5RnTyQB2YkANncO26fFMIDwmmYSSaeDe0C4bAFXFgQrEDw22123gA3CgVmAnhA2MBZGAABS6gCU8AAfMglKAEA1TABhJxcHBgAB0aTAAHlwH1DSqeiBHXCjuItJzHTZjgAZLjSPBJR20GBgD4QeROMCW5jSYBJdjMb3BX3-45BrYhgMRqMxgDGmeAODT-GzuYINrtDsdavdoWgutA_iQ-BASS4FbwNxMaXRzAOAa-BfEXxREAkkO8BpVa18BM8BqAA).

> Is it intended that _replaceMerge_ doesn't support media [setOption](https://echarts.apache.org/en/api.html#echartsInstance.setOption) and [media.option](https://echarts.apache.org/en/option.html#media.option) are incompatible since both are trying to change the same _option_. Interesting to know how developers are planning...

It seems [registerMap](https://echarts.apache.org/en/api.html#echarts.registerMap) controls the type of map coordinates. **geoJSON** map will accept only lng/lat coordinates and **SVG** map will accept only x/y coordinates. I do not think a scatter...

> Is there any way to convert lng/lat coordinates into x/y coordinates Yes, provided that the geographic coordinate system used for drawing the SVG map is WGS 84. In my...

kind of a workaround - [Demo](https://echarts.apache.org/examples/en/editor.html?c=line-simple&code=PYBwLglsB2AEC8sDeAoWsAeBBDEDOAXMgL4A0asAnjvkauungMYCGANgKZFgBOArhwpkKYYMDaQQBJMMYceEDoVgBtCunoN00FgFsusAOQBGAJymADIfJb0YSiAOGOAMxccmYAMqswYedbqDAAmLGAsRGq2DCoATAAcAGwWACyksADsGenGGRamiUmm6YZYfHi87BAs1rBmlgC6NtGqAMzGxomt6VkAdGmwsRmJibEpKRYlAMIsOqG19RZNQVoqxgCsnemFORspyetZ3UZTABYQOgvmS83Ra62JeT0pvdl1FuvxsRZf03wARjUctdli1VAl1uYeut0ilTEk8jCjAAxC5sWbBK6NW62OKmFLDHoZXrGdLrRL41qxKEonizJgcLE3FYxdoExLQ_o9eKmT6xVpvQwAcXkulmlCZoJacSSI25JPSsXWKXirUmRgAkgz0dBMcDsSz0Gssm9Dq90vE8slcoTNbrqpKcatqet1uqMqYFXVYj64RCSgApFggWaOw3giy2x69YqDCxmFKtZUlABywB4YFOsAA0umOEC6iCnTFjN9LT1YrDqRkfcmjF5gHxMzm8wXFlK7mMLLFSZl1lzYK1WqYMutWgNDCmOAB3WAALXzOr1hYNYJUiepHMyiV68SrEwFSMn6enLAl-uZa-MFh-e8yFl36Va8TM6yVd8MAAVxBiw1fTOOsYUr0W7GAS5LxK6lZGAASuUeAOheHa4tejzqtGxxjuY-wfCUAAqfA8AA1hw54rpe0qxIkKRjJypoZB08a5CUACq0AQP4wQ5hcADmwTALof7SgKFijJyAxKgkBIvuqhhsRxHBcV44T-HgkosshjCULo_ziF4EAAF4GC4fDQJ4UBwAAFKE4QAJTIOGPAcGAhFwAAsmEpy9HgACOGbWWELBxA09kAPSwOsHCxAA3Cysi2ApujKZQnB0OGTDiOmRCGDwPGApZYzQXed7GLZhhxcWswQGKkAwEQLjsHgHA4vFGgshAwTZecwTBBw0C1Do-jZYsgTRPYjjZa47ieD4YT-Dwo0Jf4SX2KlyCwBlbBZUY_xsAIhitQwCggCAnAAKJuB4YB0JtWWGLt-2HegBlEMcNkRCoDRBMQWgUF9xCxbolBnCwGa9DAlmGLojZNcAABuATpCZZm1VZID2ZoEAuLAlkgN58iKHgGq6hwGAAITwBY9lOS5PDQLF6B8CAXGIEgTUKEoaVaB1XUdb1_U4u9kR4-9yF4NpulsPpRn1aZ5kwDj70YyyNOubAHmZt5flgLjvTvcFYURVFDMMPFxDEBQQMg2DTVgAA8uAFmWUzwS2bFxBuygVunKDYDg9AkPQ-UHCNmAtTI_LaPK4zzMIMg7OE1zDA80Y3X84t6BC6oTSwOLOl6YZBgWEIFvoN7vv4_bjsQy7nse9FQA). 

**Quiz**: both charts below have the same xAxis _splitnumber_ value. Can you guess what the value is ? [Demo 4.8.0](https://echarts.apache.org/examples/en/editor.html?version=4.8.0&code=PYBwLglsB2AEC8sDeAoWsAeBBDEDOAXMmurGAJ4gCmRA5JALZW0A0KJ6eIANhGAHIBXBgCMqAJyIB2NqVhdeYADIRoNYnM4ALYAHciYcYKqzNvNQGUK3dak2kAxsG7BJsWrADEAZhEAWAE4AVilWDk0KajoAE2AwMCpo2nD0AF9w9LTTchx8IiRYVNM8CQgqQlgAbXC7CMp1WnNmUzk8BmA4rSIABgA6ADYW0jxyUWc6aBhmlNgmq3IbfJn0Jxc3Wk8gvylugGF-sPt0XQhosC7YIJmimeiAQzA7omqjqtoAJm6ARgCAWi_uv9uqxYJ9ugBdIZySofb5_AH_L4goL9CFQ0gwz4_IH_d4gqRBNHLN5Y-GAr7eZEADiJr0xcJxXz8IPehMhxPp2IRXyCIO83VpR05ZP-BxYsD8bPR6GFjNC4v5gvssu5VJBAIhM3BGRI2tSAG4gA)  [Demo 5.5.0](https://echarts.apache.org/examples/en/editor.html?c=area-pieces&version=5.5.0&code=PYBwLglsB2AEC8sDeAoWsAeBBDEDOAXMmurGAJ4gCmRA5JALZW0A0KJ6eIANhGAHIBXBgCMqAJyIB2NqVhdeYADIRoNYnM4ALYAHciYcYKqzNvNQGUK3dak2kAxsG7BJsWrADEAZhEAWAE4AVilWDk0KajoAE2AwMCpo2nD0AF9w9LTTchx8IiRYVNM8CQgqQlgAbXC7CMp1WnNmUzk8BmA4rSIABgA6ADYW0jxyUWc6aBhmlNgmq3IbfJn0Jxc3Wk8gvylugGF-sPt0XQhosC7YIJmimeiAQzA7omqjqtoAJm6ARgCAWi_uv9uqxYJ9ugBdIZySofb5_AH_L4goL9CFQ0gwz4_IH_d4gqRBNHLN5Y-GAr7eZEADiJr0xcJxXz8IPehMhxPp2IRXyCIO83VpR05ZP-BxYsD8bPR6GFjNC4v5gvssu5VJBAIhM3BGRI2tSAG4gA)  **Answer** is 7. Now you know...

try ```minInterval:3, maxInterval:3,``` for x-axis, it **may** work...

if both axes can be converted to type 'category', then _axisPointer_ could be used instead of _tooltip_ - [Demo](https://echarts.apache.org/examples/en/editor.html?c=line-simple&version=5.5.0&code=PYBwLglsB2AEC8sDeAoWsAeBBDEDOAXMrGAJ4gCmRA5AMYCGYFA5sAE6nWwC-ANGrFI58RJCXJVYdRi3ace_dGGDAANpBCiB6PAAtgAdyJg2AVwqL0JNhGbMKbGvVx5ql9M_wAFYBGhNHYjJKGlo2YDxXBW1YADN2AFtGAKIACgBKBAA-ZG4BPgE8BwgKQlgAbRjUKysIABMaVT8KAEY3GPRoegTJaiboVvaapQlG5qHhvFIEgCM1UIg2WlUKCZq9QwBlabnVYzMLDtgp2bVNiAAvSRaABncrOsZ6Ikrhq3KW3lgWgF17mvKACYvr9_u9gbBAX8juhygBmL5QsGwhHfaFvWEAFhB6Ix5WxsDhuLe5QArF8iciKuS0VTygA2HFHH4xPLoFncADcQA)

not-a-bug The Expected Behavior is not confirmed by the documentation. There is no statement saying that ```trigger: "axis"``` should output the same info as ```trigger: "item"```. Therefore you are asking...

@Ovilia, you are welcome! I may give it a try.