Remove or hide EncFeature from an electronic navigation chart

JesDL — Wed, 14 Aug 2024 12:06:35 GMT

I am correctly reading nautical charts in my program using the example documented here:

https://developers.arcgis.com/qt/layers/display-electronic-navigational-charts/

I would like to hide all elements that appear on the nautical chart, and I have achieved this for almost all elements by filtering as follows:

EncDisplaySettings *encDisplaySettings = EncEnvironmentSettings::displaySettings(); EncMarinerSettings *encMarinerSettings = encDisplaySettings->marinerSettings(); encMarinerSettings->setDataQuality(false); encMarinerSettings->setLabelContours(false); encMarinerSettings->setDisplayNobjnm(false); encMarinerSettings->setHonorScamin(false); encMarinerSettings->setIsolatedDangers(false); encMarinerSettings->setLabelSafetyContours(false); encMarinerSettings->setLowAccuracy(false); encMarinerSettings->setShallowDepthPattern(false); encMarinerSettings->setTwoDepthShades(false); EncTextGroupVisibilitySettings *encTextGroupVisibilitySettings = encDisplaySettings->textGroupVisibilitySettings(); encTextGroupVisibilitySettings->setBerthNumber(false); encTextGroupVisibilitySettings->setCurrentVelocity(false); encTextGroupVisibilitySettings->setGeographicNames(false); encTextGroupVisibilitySettings->setHeightOfIsletOrLandFeature(false); encTextGroupVisibilitySettings->setImportantText(false); encTextGroupVisibilitySettings->setLightDescription(false); encTextGroupVisibilitySettings->setMagneticVariationAndSweptDepth(false); encTextGroupVisibilitySettings->setNamesForPositionReporting(false); encTextGroupVisibilitySettings->setNatureOfSeabed(false); encTextGroupVisibilitySettings->setNoteOnChartData(false); EncViewingGroupSettings *encViewingGroupSettings = encDisplaySettings->viewingGroupSettings(); encViewingGroupSettings->setAllIsolatedDangers(false); encViewingGroupSettings->setArchipelagicSeaLanes(false); encViewingGroupSettings->setBoundariesAndLimits(false); encViewingGroupSettings->setBuoysBeaconsAidsToNavigation(false); encViewingGroupSettings->setBuoysBeaconsStructures(false); encViewingGroupSettings->setChartScaleBoundaries(false); encViewingGroupSettings->setDepthContours(false); encViewingGroupSettings->setDryingLine(false); encViewingGroupSettings->setLights(false); encViewingGroupSettings->setMagneticVariation(false); encViewingGroupSettings->setOtherMiscellaneous(false); encViewingGroupSettings->setProhibitedAndRestrictedAreas(false); encViewingGroupSettings->setSeabed(false); encViewingGroupSettings->setShipsRoutingSystemsAndFerryRoutes(false); encViewingGroupSettings->setSpotSoundings(false); encViewingGroupSettings->setStandardMiscellaneous(false); encViewingGroupSettings->setSubmarineCablesAndPipelines(false); encViewingGroupSettings->setTidal(false);

My problem is that there is one element that appears in several places on the nautical chart and I cannot seem to remove it:

Following the documentation example for identifying elements: https://developers.arcgis.com/qt/layers/display-electronic-navigational-charts/#identify-and-select-enc-features I have been able to verify that clicking on it indicates:

Found EncFeature: "Offshore platform"

I would like to know if there is any filter that I have not included in my code that could hide these EncFeatures, or if there is another way to hide or remove them from the EncLayer.

Re: Remove or hide EncFeature from an electronic navigation chart

bnoble0110 — Mon, 19 Aug 2024 19:28:25 GMT

Hello @JesDL

A quick way to hide all symbols would be to set the opacity of the ENC layer to 0.

encLayer->setOpacity(0);

You can also achieve this using the EncDisplayCategories API. All features are segregated into 3 different display categories: Base, Standard, Other.

auto* displaySettings = EncEnvironmentSettings::displaySettings(); auto* marinerSettings = displaySettings->marinerSettings(); auto* displayCategories = marinerSettings->displayCategories(); displayCategories->setDisplayBase(false); displayCategories->setStandardDisplay(false); displayCategories->setOtherDisplay(false);

Re: Remove or hide EncFeature from an electronic navigation chart

RicardoRageldelaTorre — Tue, 25 Feb 2025 14:39:29 GMT

Hi, we are in the same issue. The proposed solution hides the ENC completely, not only the symbol specified by @JesDL. Is there any other possible solution but for this kind of symbol?

Thanks in advance

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Remove or hide EncFeature from an electronic navigation chart

Re: Remove or hide EncFeature from an electronic navigation chart

Re: Remove or hide EncFeature from an electronic navigation chart