topic Re: Sentinel in ArcMap in ArcMap Questions

Sentinel in ArcMap

StanislavaV — Mon, 17 May 2021 18:03:52 GMT

Hi guys,

I downloaded Sentinel2 from EoBrowser - bands 1, 2, 3, 4, 8.

But I don´t know, in which order should I put those bands into Composite Bands so that in output raster will be 123 as true colors and 432/843 as false colors?

Thanks!

Re: Sentinel in ArcMap

DavidPike — Mon, 17 May 2021 18:16:03 GMT

Sentinel 2 Bands and Combinations - GIS Geography seems to provide a good guide to band combinations for specific uses.

The order required in the tool is RGB, so input in order of 4,3,2 for tru colour. Of-course you can later manipulate this order in the symbology tab.

Re: Sentinel in ArcMap

StanislavaV — Mon, 17 May 2021 18:34:32 GMT

yes, but in which order should I place them, when I want to have just one raster with possibility choose between true and false colors by changing bands? or it doesn´t matter?

Re: Sentinel in ArcMap

DavidPike — Mon, 17 May 2021 18:59:00 GMT

Sure, just throw them all together in the tool then choose/manipulate the band combinations as you need afterwards. Or forget about the composite bands GP tool and just use the image analysis window - as this video demonstrates (ensure you turn your sound off as the music is awful) Composite Bands (Data Management) - ArcGIS - YouTube

Re: Sentinel in ArcMap

StanislavaV — Mon, 17 May 2021 19:24:05 GMT

so I mixed them together, and now when I set as 432 - looks almost like false colors, and not true and when I set 123 - looks nothing like true 🙂

Re: Sentinel in ArcMap

DavidPike — Mon, 17 May 2021 20:16:46 GMT

I can only guess you have an incorrect stretch applied or need to calculate statistics. Try ensuring that the stretch type is set to None in the first instance. Drawing a multiband raster dataset as an RGB composite—Help | ArcGIS for Desktop

Other than that, if it is actually sentinel 2 data, and you've correctly set 4(Red) 3(Green) 2(Blue) then that's all I can offer sorry.