Re: [eigen] Eigen2 to Eigen3 Migration Path |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] Eigen2 to Eigen3 Migration Path*From*: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>*Date*: Wed, 12 Jan 2011 08:30:20 -0500*Dkim-signature*: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=Jm8kRIQyykJH18apwY18FBzLOBSY48/AybL5863ZONo=; b=CRH9x1iFsd+0sSf+7TfCWcxWuMcZtBlc1NRcLDqSIXnvhyp85CwA2e+8cNQ7H6sv77 dS47Zu+MKzgA+ETaWnGD23kYoCN0r6aUYLRT8hgr6XUTgwbWhcDdgWkdMtPj+cUvmKb1 q4GcRD5ozKAT/5XraH9OqOQkVNuwqxwrFDSqM=*Domainkey-signature*: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=l0m/HjQJDSilYg5JOIMw4lXr/CmI1PLGJa48Fx8jfvj5HYAcB+8nEalnC0S//juUAm GYKxOeoUImAPYKH+2StVyIF3NgFWjPDX/CERwJHfCaA98roEyWmicrfx8EHCGEuIUZ1y bth7sXwwDOSyyXjZqFV0TPoLwVxeSBHK9W5PQ=

2011/1/12 Gael Guennebaud <gael.guennebaud@xxxxxxxxx>: > On Wed, Jan 12, 2011 at 1:57 PM, Benoit Jacob <jacob.benoit.1@xxxxxxxxx> wrote: >> The trivial solution would have been to replace Eigen by Eigen3 and >> EIGEN_ by EIGEN3_ everywhere in the Eigen3 sources, but that is quite >> invasive at this stage. >> >> However, given that that solves the problem once and for all, also for >> any future version, it's quite tempting. >> >> Would you agree with such a change? > > but think about the hundreds of projects which are already using > Eigen3... I'm afraid this is much too late for such a change. Let's > first see whether EIGEN2_SUPPORT could not solve the issue. My assumption here was that Eigen2 still has many more users than Eigen3 has, but indeed experimental data proves me wrong: http://stats.tuxfamily.org/eigen.tuxfamily.org/ I copied the list of visited pages on our website with number of visits in January 2011, and did: bjacob@cahouette:~$ grep /dox/ stats | cut -f 2 -d ' ' | awk '{ SUM += $1} END { print SUM }' 663 bjacob@cahouette:~$ grep /dox\-devel/ stats | cut -f 2 -d ' ' | awk '{ SUM += $1} END { print SUM }' 617 So we seem to have almost as many users on Eigen3 as we have on Eigen2. Solving the present problem with EIGEN2_SUPPORT would be great indeed. Let's wait to hear back from Tully about that. We can probably extend EIGEN2_SUPPORT to do many more things you may need. Benoit > > gael > > >

**Follow-Ups**:**Re: [eigen] Eigen2 to Eigen3 Migration Path***From:*Benoit Jacob

**References**:**[eigen] Eigen2 to Eigen3 Migration Path***From:*Tully Foote

**Re: [eigen] Eigen2 to Eigen3 Migration Path***From:*Benoit Jacob

**Re: [eigen] Eigen2 to Eigen3 Migration Path***From:*Gael Guennebaud

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