Carson, I think that requiring all layers to be on the same CRS for processing makes sense, we can live with that. Perhaps this fact should be stated in the documentation and even in the menu where the user selects reprojection on the fly (for example, adding "only for display of vector layers") and/or in all fTools menus (and/or fTools could actually check that CRS is consistent across layers and warn the user (rather than preventing him/her of actually performing the operation).
Thanks! Agus -------- Original Message ------- Subject: Re: CLip and reprojection on the fly Date: Thu, 17 Mar 2011 22:08:10 +0000 From: Carson Farmer <[email protected]><[email protected]> To: [email protected] Hi Agus, > I've realized that you get an empty clipped layer if > you use 2 vector layers in different CRS even if reprojection on the > fly is activated. In other words, clip require both layers to be in > the same CRS. Is this intentional (it would make sense) or is it > a bug? Yes it is intentional. In fact, all fTools functions (where overlay is relevant) behave this way. When I first created these tools, this seemed like the best option. I am now starting to think that using 'on the fly projection' coordinates might be a good feature to have. I will have to evaluate this further, but for the time being, they do both have to be in the same (or equivalent) CRSs. Carson -- Carson J. Q. Farmer ISSP Doctoral Fellow National Centre for Geocomputation National University of Ireland, Maynooth,http://www.carsonfarmer.com/
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