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optionally remove NaN from field
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@boriskaus
boriskaus committed Feb 25, 2024
1 parent f8e1389 commit e28d748
Showing 1 changed file with 10 additions and 7 deletions.
17 changes: 10 additions & 7 deletions ext/GMT_utils.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -107,7 +107,7 @@ ImportTopo(; lat=[37,49], lon=[4,20], file::String="@earth_relief_01m.grd") = Im


"""
data_GMT = ImportGeoTIFF(fname::String; fieldname=:layer1, negative=false, iskm=true, NorthernHemisphere=true, constantDepth=false)
data_GMT = ImportGeoTIFF(fname::String; fieldname=:layer1, negative=false, iskm=true, NorthernHemisphere=true, constantDepth=false, removeNaN_z=false, removeNaN_field=false)
This imports a GeoTIFF dataset (usually containing a surface of some sort) using GMT.
The file should either have `UTM` coordinates of `longlat` coordinates. If it doesn't, you can
Expand All @@ -119,9 +119,9 @@ Optional keywords:
- `iskm` : if true, the depth is multiplied by 1e-3 (default=true)
- `NorthernHemisphere`: if true, the UTM zone is set to be in the northern hemisphere (default=true); only relevant if the data uses UTM projection
- `constantDepth`: if true we will not warp the surface by z-values, but use a constant value instead
- `removeNaN` : if true, we will remove NaN values from the dataset
- `removeNaN_z` : if true, we will remove NaN values from the z-dataset
"""
function ImportGeoTIFF(fname::String; fieldname=:layer1, negative=false, iskm=true, NorthernHemisphere=true, constantDepth=false, removeNaN=false)
function ImportGeoTIFF(fname::String; fieldname=:layer1, negative=false, iskm=true, NorthernHemisphere=true, constantDepth=false, removeNaN_z=false, removeNaN_field=false)
G = gmtread(fname);

# Transfer to GeoData
Expand Down Expand Up @@ -150,16 +150,19 @@ function ImportGeoTIFF(fname::String; fieldname=:layer1, negative=false, iskm=tr
end

end

if removeNaN_z
remove_NaN_Surface!(Depth, Lon, Lat)
end
if removeNaN_field
remove_NaN_Surface!(data, Lon, Lat)
end
data_field = NamedTuple{(fieldname,)}((data,));

if constantDepth
Depth = zero(Lon)
end

if removeNaN
remove_NaN_Surface!(Depth, Lon, Lat)
end

if contains(G.proj4,"utm")
zone = parse(Int64,split.(split(G.proj4,"zone=")[2]," ")[1]); # retrieve UTM zone
data_GMT = UTMData(Lon, Lat, Depth, zone, NorthernHemisphere, data_field)
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Registration pull request created: JuliaRegistries/General/101638

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