Thresholding via Batch Process

snap
#1

Hello everybody!

I want to create a Water-Land-Mask by using a threshold.

Unbenannt
Unbenannt1277×1049 812 KB

I have five Sentinel-1 VV scenens. As I don´t want to conduct the procedure for each scene individually but for all scenes at once I want to use Batch Processing. For using the Batch Processing I first have to create a Graph.
The Problem is: If I open the Band Math Tool in the Graph Builder I have to set a certrain band to which the threshold should be applied to. So when I call the Graph in the Batch Process the same band is called five times. How can I set a placeholder which fills in the correct band when using the Batch Processing?
My equation in the Graph Builder Looks as can be seen in the Picture. What can I substitute the “@” with so that each band is automatically inserted later during the Batch Process?

Thank you!

#2

Do you want to apply the threshold to 5 bands?
You can add “or” to your “if” condition and add each band name:
if @ < -1 or @ < -1 or @ < 2 then 1 else 0

If you want to apply the threshold to 5 images, substitute @ by the band name and use the Batch Processor tool to insert the input names of your scenes.