Lowrance NauticPath, the rock problem

Ben Ellison

Ben Ellison

Panbo editor, publisher & chief bottlewasher from 4/2005 until 8/2018, and now pleased to have Ben Stein as a very able publisher, webmaster, and editing colleague. Please don't regard him as an "expert"; he's getting quite old and thinks that "fadiddling fumble-putz" is a more accurate description.

3 Responses

  1. MacENC says:

    Here is the NOAA ENC version..
    Click Here

  2. Ben Ellison Ben Ellison says:

    Interesting! The ENC as presented does NOT show the rocks. I see the same thing in Coastal Explorer, until I turn on “Full Object Display”, and then the rocks show. I’m surprised that critical detail like that can be turned off.
    Note that the best ENC (at the moment) for this area is based on the 1:40,000 scale coastal chart, not the 1:20 harbor chart shown in my entry. That’s why, in some ways, the NauticPath is more detailed than the ENC.

  3. MacENC says:

    The S-57 ENC specification makes no assumptions to rendering the data other than to adhere to the minimum scale of each feature. That is only to display the feature when the scale is equal or larger to the features minimum scale.
    The presentation is up to the specific application. MacENC chooses to use the text “rock” where other applications might use the traditional * with a dashed circle.
    One of the signifcant benefits of the S-57 ENC vector data is that it can be queried. So no longer is displaying everything on the 2D display required as is with a traditional raster (scanned paper) chart.
    This gives a much cleaner de-cluttered screen. Only when the user wants to “see” more information about a feature they can click on it to learn more.
    Furthermore with MacENC the user can quickly toggle the raster chart such that is overlays the vector chart. This gives the best of both worlds allowing the user to querey the raster chart using the vector data.
    Example raster chart overlayed on vector chart data..
    Click Here

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