Hi everyone, I have a question about the updated input structure of the

cooler/cload

module. Previously, the module accepted:

tuple val(meta), path(pairs), path(index), val(cool_bin)
path chromsizes

Now it expects:

tuple val(meta), path(pairs), path(index)
tuple val(meta2), path(chromsizes)
val(cool_bin)

How can I pass a

cool_bin

channel with several resolutions values?

@Matthieu Muffato you are listed as author. are you able to help?

The interface change didn’t affect the possibility of passing multiple values in

cool_bin

. I presume you already

combine

/

cross

etc the pairs and the resolutions. Then, instead of passing that entirely as the first input, you need to split it

cload_inputs = ch.multiMap {
  pairs: [meta, pairs, index, _cool_bin] -> [meta, pairs, index]
  res: [_meta, _pairs, _index, cool_bin] -> cool_bin
}
COOLER_CLOAD(cload_inputs.pairs, chromsizes, cload_inputs.res)

Thanks @Matthieu Muffato! Is it important for the resolutions to be out of the main input tuple? I'm currently combining the samples and resolutions channels just before the multiMap to split them.

I understand the change was not to force combining sample information/data with the resolution. For instance, someone only wants one resolution, they can pass

params.resolution

directly, without having to blend it into the channel.