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write to shapefile #15

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Merged
merged 10 commits into from
May 4, 2023
Merged

write to shapefile #15

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0adb42d
write to shapefile
ErickChacon May 3, 2023
f0844d2
remove initial conversion to MeshData
ErickChacon May 3, 2023
dd8e411
Update src/GeoTables.jl
juliohm May 3, 2023
7e83d66
add information about keyword arguments
ErickChacon May 3, 2023
e2935a7
better description of examples
ErickChacon May 3, 2023
493b3f4
docstring for keyargs
ErickChacon May 3, 2023
9e62c6e
Update README.md
ErickChacon May 3, 2023
2001430
remove temporal fix of Shapefile.jl
ErickChacon May 3, 2023
83abc8c
tests for writing
ErickChacon May 4, 2023
37fa290
use datadir for writing
ErickChacon May 4, 2023
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21 changes: 14 additions & 7 deletions src/GeoTables.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -31,14 +31,14 @@ specify the layer of geometries to read within the file.
- `*.geojson` via GeoJSON.jl
- Other formats via ArchGDAL.jl
"""
function load(fname, layer=0)
function load(fname; layer=0, kwargs...)
if endswith(fname, ".shp")
table = SHP.Table(fname)
table = SHP.Table(fname; kwargs...)
elseif endswith(fname, ".geojson")
data = Base.read(fname)
table = GJS.read(data)
table = GJS.read(data; kwargs...)
else # fallback to GDAL
data = AG.read(fname)
data = AG.read(fname; kwargs...)
table = AG.getlayer(data, layer)
end
GeoTable(table)
Expand All @@ -54,9 +54,16 @@ appropriate format based on the file extension.

- `*.geojson` via GeoJSON.jl
"""
function save(fname, geotable)
if endswith(fname, ".geojson")
GJS.write(fname, geotable)
function save(fname, geotable; kwargs...)
if endswith(fname, ".shp")
geoms = domain(geotable)
if !isa(geoms[1], Multi) & !isa(geoms[1], Point)
newgeoms = GeometrySet([Multi([geom]) for geom in geoms])
geotable = meshdata(newgeoms, etable = values(geotable))
end
SHP.write(fname, geotable; kwargs...)
elseif endswith(fname, ".geojson")
GJS.write(fname, geotable; kwargs...)
else
throw(ErrorException("file format not supported"))
end
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16 changes: 10 additions & 6 deletions src/conversion.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -20,15 +20,19 @@ GI.ncoord(::GI.PointTrait, p::Point) = embeddim(p)
GI.getcoord(::GI.PointTrait, p::Point) = coordinates(p)
GI.getcoord(::GI.PointTrait, p::Point, i) = coordinates(p)[i]

GI.ngeom(::Any, s::Segment) = nvertices(s)
GI.getgeom(::Any, s::Segment, i) = vertices(s)[i]
GI.ncoord(::GI.LineTrait, s::Segment) = embeddim(s)
GI.ngeom(::GI.LineTrait, s::Segment) = nvertices(s)
GI.getgeom(::GI.LineTrait, s::Segment, i) = vertices(s)[i]

GI.ngeom(::Any, c::Chain) = nvertices(c)
GI.getgeom(::Any, c::Chain, i) = vertices(c)[i]
GI.ncoord(::GI.LineStringTrait, c::Chain) = embeddim(c)
GI.ngeom(::GI.LineStringTrait, c::Chain) = nvertices(c)
GI.getgeom(::GI.LineStringTrait, c::Chain, i) = vertices(c)[i]

GI.ngeom(::Any, p::Polygon) = length(chains(p))
GI.getgeom(::Any, p::Polygon, i) = chains(p)[i]
GI.ncoord(::GI.PolygonTrait, p::Polygon) = embeddim(p)
GI.ngeom(::GI.PolygonTrait, p::Polygon) = length(chains(p))
GI.getgeom(::GI.PolygonTrait, p::Polygon, i) = chains(p)[i]

GI.ncoord(::Any, m::Multi) = embeddim(m)
GI.ngeom(::Any, m::Multi) = length(collect(m))
GI.getgeom(::Any, m::Multi, i) = collect(m)[i]

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