<br><br><div class="gmail_quote">On Tue, Apr 10, 2012 at 11:06 PM, Cartinus <span dir="ltr"><<a href="mailto:cartinus@xs4all.nl">cartinus@xs4all.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
That would already be achieved with GPL. You don't need AGPL for that.</blockquote></div><div><br></div>Well AGPL <a href="http://www.gnu.org/licenses/agpl-3.0.html">http://www.gnu.org/licenses/agpl-3.0.html</a> covers public <span style="color:rgb(53,56,42);font-family:FreeSans,clean,sans-serif;font-size:16px;line-height:20px;text-align:left;background-color:rgb(255,255,255)">propagation and network interaction</span>, the GPL does not. Under the gpl you would be able to create modified styles on your own server and not publish them.<div>
<br></div><div><span style="color:rgb(53,56,42);font-family:FreeSans,clean,sans-serif;font-size:16px;line-height:20px;text-align:left;background-color:rgb(255,255,255)">"""To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. ''''</span></div>
<div><span style="color:rgb(53,56,42);font-family:FreeSans,clean,sans-serif;font-size:16px;line-height:20px;text-align:left;background-color:rgb(255,255,255)"><br></span></div><div>The issue here of style sheets is that they are not conveyed to the users via the tiles. The stylesheets are not contained directly in the tiles only indirectly, and the user does not interact with them directly only indirectly.</div>
<div><br></div><div>I think that you can execute a private copy of a style without incurring any copyright issues at all, except for constants contained in those styles that are copied into the resulting map. </div><div>
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</div><div>It is a question of the tiles are even a derived work of the styles exactly, </div><div><br></div><div>lets think about this longer, but lets say, the color red is contained in the style to show that a street is under construction. This color red is displayed on a tile. </div>
<div><br></div><div>The color of the pixels contains data that is copied from the style, but the rules to select that style are not, the definition of the style is not conveyed, only the effect of that style is.<br>For example if were to copy trademarked strings, top secret information etc that would be an issue. The copyright issues of styles are limited to that which is copied into the map. So symbols, string literals, trademarked strings etc would all be issues to look at deeply.</div>
<div><br></div><div>Now if you are to distribute these styles in a mapcss that would be a different issue, but I am talking here about mapnik rendering with no user interaction with the rendering process.<br clear="all">
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<br></div><div>This is similar to the issue of providing the output of a modified gcc compiler that compiles the users source code, you would also not have to provide your private modications to the compiler, I guess if the compiler was licensed under the agpl you could not make a public webservice .</div>
<div><br></div><div>The same thing would be with providing an online web service that would render on demand for users, maybe that in theory could fall under propagation of a style sheet if you were provide an interactive service that needs to use an AGPLed styles. </div>
<div>I am still not clear on how much interaction here would be an issue, if your software itself is interacted with and you only read the agpled styles as data we might have a very weak case for AGPLd protection.</div><div>
<br></div><div>mike</div><div><br></div>-- <br>James Michael DuPont<br>Member of Free Libre Open Source Software Kosova <a href="http://flossk.org" target="_blank">http://flossk.org</a><br>
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