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I just want to judge a point with Lon/Lat about whether it is in land or sea in my front-end program. I want to konw how to do it with JavaScript. Any WebAPI can be used freely?

  • Like simoneprimarosa.com/is-sea ? – Mapperz May 18 at 17:56
  • Yes,but how can i call the API in my own front-end program?It seems like the one you mentioned is judged directly in its js program – Xiaoqi May 19 at 0:22
  • you need to tell us more information on your setup... – Mapperz May 19 at 0:50
  • The web application you mentioned above is written by you? I just want to determine the range of interpolation because i only need ocean range rendering using canvas. I write my application using pure Javascript and Openlayers .Could you tell me how the application realize the function that i want?Thanks so much! – Xiaoqi May 19 at 12:02

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