Support for multiple bbox in planetosm-excerpt-area.pl #565
Comments
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Author: tom[at]compton.nu I think this script is yours Nick? |
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Author: tom[at]compton.nu Lambertus - there is also an extract-polygon.pl in svn that may be of more use to you as it can deal with non-rectangular polygons? I believe osmosis can also do the same, so that may be of use? |
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Author: lambertus Replying to [comment:2 tom[at]compton.nu]:
Currently, the entire planet needs to be processed for every excerpt. I think this process could be significantly faster when the planet could be processed only once while outputting the data to different files for each of the multiple excerpts. Hence the request for multiple bounding boxes. Fortunately this functionality appears to be possible when using the planetosm-excerpt-polygon.pl script. This ticket can therefore be closed. Thank you. |
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Author: crschmidt Closing, per Lambertus. Also, I believe that osmosis also has this functionality now. |
Reporter: lambertus
[Submitted to the original trac issue database at 9.09am, Thursday, 18th October 2007]
For creating Garmin maps with Mkgmap the bounding box should be fairly small (e.g. smaller then 0.5 degrees), otherwise the resulting image is too large. To output multiple bounding boxes the script needs to iterate through the entire planet file for every bounding box.
The example above can be significantly enhanced when the script allows multiple bounding boxes and output files to be defined. It then needs to iterate only once through the planet file, outputting the corresponding data for all supplied bounding boxes. This should speedup the process a great deal, almost by 1/n I think. This function would also be useful for other tasks, not just Garmin map making.
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