Thanks guys. That clears things up. Regarding the installation, it seems to be pretty ok now. Maybe that was before wheels were super popular. I came across it as I was going through the build process again finalising the removal of matplotlib as a dependency. That is mostly done, but the PR turned out to be more complicated than I thought so I split it in two. On Thu, Jun 28, 2018 at 7:10 PM Josh Warner <silvertrumpet999@gmail.com> wrote:

The only algorithm I'm aware that it enhances is random walker segmentation. That said, it's of massive benefit to random walker.

It is truly an optional dependency in that the algorithm transparently functions without it.

From a test matrix standpoint I'm not sure this warrants more than including it with current latest stable dependencies - but I believe there was once some difficulty getting it up and running in an efficient manner on Travis.

On Thu, Jun 28, 2018, 13:06 Mark Harfouche <mark.harfouche@gmail.com> wrote:

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Hi all,

Should pyamg just be listed as an optional dependency? As far as i know, it is meant to speed up some scipy algorithms. Is there a reason it is not in there?

Mark

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