slope is exported on the country borders

[12rambau]

the consequence is removing the disputed areas from the file. we should reexport it at world scale or at least on the LMIC bounds.

to be adapted for further use

// view the layer
var elevation = ee.Image('USGS/SRTMGL1_003')

// get refs
var layer = "projects/john-ee-282116/assets/fao-restoration/features/rest_pot_gt_treecoverfrac_mask_urban" 
var ee_ref_crs = ee.Projection(ee.Image(layer).projection())

// get lmic bounds
var ee_ref_geom = ee.Geometry.Polygon({
    coords: [
        [-144.51600549814273, -58.07221137655366],
        [192.42150308492614, -58.07221137655366],
        [192.42150308492614, 57.78491418812651],
        [-144.51600549814273, 57.78491418812651],
        [-144.51600549814273, -58.07221137655366],
    ],
    geodesic: false,
    proj: "EPSG:4326",
})

// build the slope 
var slope = ee.Algorithms.Terrain(elevation).select('slope')

// export 
Export.image.toDrive({
  "folder": "se.plan",
  "image": slope,
  "description": "slope",
  "region": ee_ref_geom,
  "scale": 1000,
  "crs": ee_ref_crs,
  "maxPixels": 10e12,
});