Sentinel-2 QA band

[ranpelta]

Hi,

When I search for Sentinel2 images (L2A product, i.e., surface reflectance) I cannot see the QA band (classification band) that usually comes with the L2A images.

How can I get this band so I can overlay it for visualization?

Thanks,
Ran

[gmilcinski (Grega Milcinski)]

Check this post

L2A scene classification for Sentinel-2

It is now possible to get information from scene classification layer produced by Sen2Cor, for data where L2A is available, of course. Data can be retrieved by identifier “SCL” (e.g. instead of return [B02]; for blue color one can use return [SCL];). Data can be then used for e.g. validation of the pixel value, e.g. along the lines: function validate (samples) { var scl = Math.round(samples.SCL); if (scl == 3) { // SC_CLOUD_SHADOW return false; } else if (scl == 9) { // SC_CLOUD_…

[ranpelta]

Hi, thanks, but I’m not sure I understand… I meant- how do I visualize the SCL layer in the UI.
I’m attaching UI menu for visualization which does not contain the SCL option.

Is there a was to visualize the SCL band? and of course to know the value of a selected pixel?

[gmilcinski (Grega Milcinski)]

If you click the yellow switch on the top right part of the screenshot, you can enter the Custom script as presented in the forim thread.
There is no user interface for that

[ranpelta]

oh, now I see, thanks