[Imports-us] Florida Water from Land Cover Import

Jason Remillard remillard.jason at gmail.com
Fri May 31 20:44:54 UTC 2013


- I agree with Serge, in that you should try to keep it as three
separate projects. Lakes/Ponds are the easiest to start with.
- The minimum tags would be natural=water, water=* tags, and the name
tag. You will need a plan for the name tag.
- You should try to automate as much as possible. However, its
probably not possible to automate 100% of it. You can certainly
automate much of the prep work. I have been fiddling with some scripts
for lakes/ponds in MA,  I might be able to help.


On Thu, May 30, 2013 at 11:11 PM, Brian May <bmay at mapwise.com> wrote:
> Hi List,
> Florida's 5 Water Management Districts map land cover for the entire state.
> The data is provided in shapefile format. Florida has liberal public records
> laws as described in Chapter 119 of the Florida Statutes. Basically, all
> data (with a few exceptions) produced by state and local governments in
> Florida is public domain.
> Another OSM user and I are proposing to tackle manually importing water
> derived from the land cover shapefiles produced by the Water Management
> Districts. In addition, we will update coastlines. We would also like to
> explore utilizing the wetlands and forest polygons from the land cover,
> however, I know there are potential problems with shared polygon borders and
> I'm not sure the best way to go about that.
> I have seen a fair amount of NHD data that has been imported in parts of
> Florida, and from what I have seen so far, the water polygons derived from
> land cover are much more accurate, detailed, and up-to-date.
> Some manual import work using this data has already been done, so partly
> we're "coming clean". I have read the import guidelines and kept up with
> this mailing list. In the past, I have subsetted out the water from the land
> cover SHP by selecting it in ArcMap and exporting to a new shapefile. Then
> used shp-to-osm to convert to OSM XML, loaded it into JOSM, and then
> copy/pasted the ways into the main OSM layer. In the past, I've tagged the
> ways with natural=water and source=SFWMD Land Cover 2008 (or whatever WMD
> the source was). I now know that adding the source tag to each way is not
> desirable and the source should be in the changeset. I have also brought the
> sub-setted  SHP directly into JOSM and copied ways that way. I've often
> cleaned up the ways to improve the quality of the linework and manually
> removed vertices. Some examples of this work are in Martin County FL and
> Broward County FL.  In addition, I have used parts of ways to improve parts
> of the coastline that was either unedited or poorly edited. Mainly in SW FL
> up to Tampa Bay.
> The other person involved in this effort recently manually imported some
> water polygons from the land cover, but left a lot of unnecessary tags from
> the shapefile. We will work on cleaning these tags up. He is involved with
> the OSM Tampa group and will be enlisting help from them as well to clean up
> the recent issues and help with bringing in more data.
> I have created an initial wiki page[1] and used the format and text from the
> Seattle Import page as a guide.
> So, the next steps are to further flesh out the wiki page detailing the
> process, provide some sample OSM files for review, and discuss with the US
> OSM community before we do any more importing. We would also welcome any
> others who have an interest in helping out with the effort.
> I want to stress that this will be a manual import consisting of loading in
> the OSM file to JOSM and manually copy/pasting ways into OSM. Additional
> linework editing will be done to improve the accuracy of the ways based on
> Bing imagery.
> Brian May, aka grouper
> [1] http://wiki.openstreetmap.org/wiki/Florida_Land_Cover_Import
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