FlowViewer 4.6: drop --interlace argument to rrdtool graph

[Tim Mooney]

My work environment recently updated our ipfix/netflow stack and we had to make some changes to parts of FlowViewer to get things working.

This patch drops the '--interlace' argument everywhere it is passed to rrdtool's graph function.

Since a change to the option parser, rrdtool no longer accepts the '--interlace' argument. Apparently it was always supposed to be '--interlaced' (note the 'd' at the end), but '--interlace' was accepted (but possibly ignored?) by the old option parser? See:

https://github.com/oetiker/rrdtool-1.x/pull/679

In addition, since rrdtool 1.3 even '--interlaced' has been ignored (see rrdgraph's man page).

Fix courtesy of my site's principal network engineer, Bruce Curtis.

[Joe Loiacono]

Tim,

Thank you so much. Who knew?!

It's actually great news to see that RRDtool is still viable and Toby
himself is still at it.

I've kind of retired, but I'll try to fix up the distribution.

Thanks again!

Joe

On 8/24/2026 7:19 PM, Tim Mooney wrote:

My work environment recently updated our ipfix/netflow stack and we
had to make some changes to parts of FlowViewer to get things working.

This patch drops the '--interlace' argument everywhere it is passed to
rrdtool's graph function.

Since a change to the option parser, rrdtool no longer accepts the
'--interlace' argument. Apparently it was always supposed to be
'--interlaced' (note the 'd' at the end), but '--interlace' was
accepted (but possibly ignored?) by the old option parser? See:

https://github.com/oetiker/rrdtool-1.x/pull/679

In addition, since rrdtool 1.3 even '--interlaced' has been ignored
(see rrdgraph's man page).

Fix courtesy of my site's principal network engineer, Bruce Curtis.

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FlowViewer 4.6: drop --interlace argument to rrdtool graph
https://sourceforge.net/p/flowviewer/discussion/general/thread/27bfdc7c03/?limit=25#4607

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[Tim Mooney]

I'll have another patch to work around SiLK deprecating several field types (fields 22, 23, 24) but it may be a day or two before I have time to send it.