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tilemill-project / tilemill

TileMill is a modern map design studio
https://tilemill-project.github.io/tilemill/
BSD 3-Clause "New" or "Revised" License
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Better tutorials on rasters #2104

Open springmeyer opened 10 years ago

springmeyer commented 10 years ago

We have two turorials on rasters:

We need these updated and expanded to discuss performance issues and other gochas. The main other gocha I can think of is that TileMill now supports raster reprojection but it often has artifacts so its not totally viable.

Performance is particularly important because so often people working with rasters are working with large/lots of files, don't know how to build overviews (are they built on the VRT or the files pointed at by the VRT), and might have used geotiffs but never VRT's, and do not know what size of geotiffs to create when breaking up and then combining with VRT.

downstream:

ian29 commented 10 years ago

this would be great. @geografa hit me up if you need any help here.

geografa commented 10 years ago

Hey @ian29, @springmeyer , I've got a jump on this and going to compile some of the ticket summaries into each article. I'm trying to find the best approach for grabbing some of the article issues into a 'best practices' for each raster tutorial. Also, I'm noticing right off the bat that some of the links reference GDAL, projections, and other external links. Any thoughts on bringing some of those topics into a MapBox-centric guide? For instance, there's a link to spatialrefernce.org but going to that site is a nightmare. I think simplifying and summarizing some of the references before we send someone off into rabbit hole of a site would save some time for everyone. Just not sure how deep it should get.

springmeyer commented 10 years ago

Cool. What about starting a generic best practices/core skills page and then refactoring and repointing other raster related tutorials (current and future) to that. Starting small is okay. Mainly we just need a page to capture coming support issues. A great 'have you read this rasters doc page yet?'

tmpsantos commented 10 years ago

What happened to the links downstream?

geografa commented 10 years ago

@tmpsantos The discussion forums at support.mapbox.com have been archived in favor of our new support system. We'll be updating docs for TileMill in the near future, though. If there's something specific I can locate for you, I'll see what I can dig up. Alternatively, you can always send an email to support@mapbox.com.

geografa commented 10 years ago

@brunosan @hrwgc per discussions on support with @springmeyer, now's a good time to get something like this out. We discussed an end to end tutorial on rasters so I'd like your input for what this can look like - a TileMill guide, Foundation guide, something completely different? I can pull the old articles from downstream (old Tender tickets) and we can start building a rough outline for the necessary sections. Let me know if you have bandwidth for this next week.

lyaunzbe commented 10 years ago

I'm interested in learning more about using VRTs with TileMill. Is it currently as simple as referencing a vrt file as the datasource (in the mml)?

laurentades commented 10 years ago

Stumbled across this issue as i'm slowly making progress on handling raster formats (story of my life is there : https://github.com/mapbox/tilemill/issues/1403). Would be very keen to help and write up some stuff on what i've learnt (once i'm done with my current issue though...), for further review by higher gurus....