ImageryTileLayer with COG

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      const url =
        "https://ss6imagery.arcgisonline.com/imagery_sample/landsat8/Bolivia_LC08_L1TP_001069_20190719_MS.tiff";
      const layer = new ImageryTileLayer({ url, bandIds: [3, 2, 1] });

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      bandIdsSelect.addEventListener("calciteSelectChange", () => {
        // Convert comma-separated IDs to numbers.
        const bands = bandIdsSelect.value.split(",").map((id) => +id);
        layer.bandIds = bands; // Update Landsat 8 band ID combination.
      });

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      viewElement.addEventListener("arcgisViewClick", async ({ detail: { mapPoint } }) => {
        // Show the chart and NDVI elements upon first interaction.
        if (chartDiv.hidden) chartDiv.removeAttribute("hidden");
        if (ndviDiv.hidden) ndviDiv.removeAttribute("hidden");
        if (!clickImageSpan.hidden) clickImageSpan.hidden = true;

        // Set clicked location on the map and show loading state.
        pointGraphic.geometry = mapPoint;
        handleLoadingUX();

        // Get spectral values at the clicked location.
        const results = await layer.identify(mapPoint);
        if (!results.value) {
          handleOutOfBounds();
          return;
        }
        handleLoadingUX(false);

        // Extract red and NIR bands, calculate NDVI, and display the value.
        const { 3: redBand, 4: nearInfraredBand } = results.value;
        const ndvi = (nearInfraredBand - redBand) / (nearInfraredBand + redBand);
        ndviValueElement.innerText = ndvi.toFixed(3);

        // Update and refresh the spectral chart with the new data.
        spectralChart.data.datasets[0].data = results.value;
        spectralChart.update();
      });