Hey all, I'm a GSoC student applicant that proposed to carry out the Cartographic Elements idea on the ideas page. I've been devoting my time into researching how I can contribute to your project. Rob asks me about how my idea would improve/integrate/build-on the mapnik.printing. I spent some time on it and have a couple of questions.
Questions - When printing.py scales the map to fit the page, does it fit to page width/height (in which case does it cut off a section of the map or does it leave a blank space on one side?) or does it stretch the mapnik layer to fit the paper (which throws off accuracy)? - Does mapnik have any plans to produce topographic maps? I plan to incorporate these additional features into my proposal. What do you think? - I could create a patch for printing.py that covers more than just one mapnik map. How about layers of mapnik maps that are combined into an all-encompassing map that is legible. This idea may seem ambitious or hard, but for simple maps, this is possible. I could help combine mapnik maps and satellite images together as well. - What sorts of map projections does mapnik support? Does the accuracy of printing.py cover them all? I could cover many types of maps in addition to thematic maps and deliver a patch for printing.py - For the additional cartographic elements, how about adding data to the map? Calculating anything from population density to number of sports facilities in an area could be a bonus for mapnik. I plan to load data to mapnik for calculating statistics, importing it into printing.py and rendering a box for these statistics in an open space on the map. - Does the mapnik map in printing.py already have things like street names, titles, labels, compass, credits, metadata (index)? If those aspects are missing, I could add them. - It would also be nice to add an additional feature for printing.py for a custom object (maybe a start to destination route?) to be added to the map and fit in available space. How about custom borders and lines? I can implement custom map design (color choosing) that allows the user to print maps while choosing colors for water bodies, land, streets, landmarks. - I like the scaling accuracy in this printing.py. I certainly learned a lot just reading it and researching on Wikipedia. Is the scaling accuracy up to your expectations? If not, I can help make it better. - Does the mapnik account for inset maps? If not, I could add that as an additional layer for printing.py. If I mentioned something that is already done, please let me know, so I can find something else to contribute to your organization. Thanks for your time! :D Regards, Bryan
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