you can import such a multichannel image by using the stack import. So in the Data Selection applet you should choose Add new -> Add a single 3D/4D volume from sequence (coming to think of it the naming isn’t the best here…). This will open up a new dialog for you. There you select your
h5 file. This will open up yet another dialog . This is where you specify the internal datasets. Note that the placeholder ilastik uses is the
So for your case you could enter
data/channel* in this dialog - there should also be a preview (in my case I had the internal path
Note, that if you want to stack all datasets in your file a simple
* will suffice as a pattern (given they have the same dimensionality, data type).
Once you are satisfied hit okay and make sure to select
C as the stacking axis:
Side note: you could also directly specify the pattern without the additional dialog (and it is automatically generated for you, too, as you can see in the above screenshot).