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0 - Mosaic.js
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/**** Start of imports. If edited, may not auto-convert in the playground. ****/
var geometry =
/* color: #99ffff */
/* shown: false */
ee.Geometry.Polygon(
[[[-51.85546875, 5.266007882805497],
[-52.294921875, 3.337953961416485],
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[-42.890625, -3.8642546157213955],
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[-49.921875, 1.9332268264771233],
[-50.625, 3.8642546157214084]]]),
geometry3 =
/* color: #ff99ff */
/* shown: false */
ee.Geometry.Polygon(
[[[-50.942767774786546, 5.2329866917050865],
[-53.03039234468224, 2.252670286516246],
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[-41.33523703168902, -1.7399795154404878],
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[-49.18558695843683, 1.9881514716159001],
[-50.15202682833427, 4.269584578486535]]]),
geometry2 =
/* color: #d63000 */
/* shown: false */
ee.Geometry.Polygon(
[[[-41.33524293673531, -1.7399793847128584],
[-41.78494534219726, -2.9279598707692878],
[-42.63136208195999, -3.7319021520608042],
[-35.76029026638304, -6.168017340829261],
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[-39.803598743162866, -13.438454522334121],
[-40.5726356970473, -17.859523670478655],
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[-38.02361011792959, -13.52395102290887],
[-34.35389021053322, -8.869082337085864],
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[-35.67242082701466, -4.680541002580579],
[-37.781877807231695, -3.5408996710512306]]]),
geometry4 =
/* color: #98ff00 */
/* shown: false */
ee.Geometry.Polygon(
[[[-40.60546875, -19.145168196205283],
[-42.451171875, -21.94304553343817],
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[-40.57266868650913, -17.859508587968477]]]),
geometry5 =
/* color: #0b4a8b */
/* shown: false */
ee.Geometry.Polygon(
[[[-47.20001086592674, -25.490387863439995],
[-48.872681334614754, -24.686952411999144],
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[-47.63671875, -26.35249785815401]]]),
geometry6 =
/* color: #ffc82d */
/* shown: false */
ee.Geometry.Polygon(
[[[-45.995635986328125, -0.9892925830239434],
[-46.087646484375, -1.2529137515304316],
[-45.867919921875, -1.3297985105274817],
[-45.76629638671875, -1.049707819510088],
[-45.918731689453125, -0.9906656690514684]]]),
table = ee.FeatureCollection("users/luizcf14/ZC_shape");
/***** End of imports. If edited, may not auto-convert in the playground. *****/
function getImageCollection(studyArea,startDate,endDate){
var ls;var l4TOAs;var l5TOAs;var l7TOAs;var l8TOAs;var out;
var sensorBandDictLandsatTOA = ee.Dictionary({
L8 : ee.List([1,2,3,4,5,11,6,'BQA']),
L7 : ee.List([0,1,2,3,4,5,7,'BQA']),
L5 : ee.List([0,1,2,3,4,5,6,'BQA']),
L4 : ee.List([0,1,2,3,4,5,6,'BQA'])
});
var bandNamesLandsatTOA = ee.List(['blue','green','red','nir','swir1','temp','swir2','BQA']);
l4TOAs = ee.ImageCollection('LANDSAT/LT04/C01/T1_TOA')
.filterDate(startDate,endDate)
.filterBounds(studyArea)
.select(sensorBandDictLandsatTOA.get('L4'),bandNamesLandsatTOA);
l5TOAs = ee.ImageCollection('LANDSAT/LT05/C01/T1_TOA')
.filterDate(startDate,endDate)
.filterBounds(studyArea)
.select(sensorBandDictLandsatTOA.get('L5'),bandNamesLandsatTOA);
l8TOAs = ee.ImageCollection('LANDSAT/LC08/C01/T1_TOA')
.filterDate(startDate,endDate)
.filterBounds(studyArea)
.select(sensorBandDictLandsatTOA.get('L8'),bandNamesLandsatTOA);
l7TOAs = ee.ImageCollection('LANDSAT/LE07/C01/T1_TOA')
.filterDate(startDate,endDate)
.filterBounds(studyArea)
.select(sensorBandDictLandsatTOA.get('L7'),bandNamesLandsatTOA);
ls = ee.ImageCollection(l5TOAs.merge(l7TOAs).merge(l8TOAs));
console.log(ls);
out = ls;
return out
}
var bqaFunction = function(image){
var bqa = image.select('BQA');
if(year > 2013){
image = image.mask(bqa.eq(2720));
}else{
image = image.mask(bqa.eq(672));
}
return image;
}
var createIndexs = function(image) {
var MNDWI = null;
var NDVI = null;
var MNDWI_calc = null;
var NDVI_calc = null;
var EVI = null;
var EVI_2 = null;
var NDWI = null;
var NDWI_GAO_calc = null;
var CAI = null;
var PRI = null;
var SAVI = null;
var WVI = null;
var WVI_GAO = null;
var MMDI_v1 = null;
var MMDI_v2 = null;
var NDSI = null;
//Gerando NDVI
NDVI = image.expression(
'(((banda4 - banda3)/(banda4 + banda3)))', {
'banda4': image.select('nir'),
'banda3': image.select('red')
});
NDSI = image.expression(
'(((banda5 - banda4)/(banda4 + banda5)))', {
'banda5': image.select('swir1'),
'banda4': image.select('nir')
});
//Gerando EVI
EVI = image.expression(
'(2.5 * ( ((banda4 - banda3)) / ((banda4 + (6 * banda3)) - (7.5 * banda1) + 1 ) )) ', {
'banda1' : image.select('blue'),
'banda3' : image.select('red'),
'banda4' : image.select('nir')
});
//Gerando NDWI_GAO
NDWI = image.expression(
'((banda2 - banda4)/ (banda4 + banda2))', {
'banda2' : image.select('green'),
'banda4' : image.select('nir')
});
//Gerando NDWI_GAO
NDWI_GAO_calc = image.expression(
'((banda4 - banda5)**2 / (banda4 + banda5)**2)**(1/2)', {
'banda4' : image.select('nir'),
'banda5' : image.select('swir1')
});
//Gerando MNDWI
MNDWI = image.expression(
'((( banda2 - banda5) / (banda2 + banda5)))', {
'banda2': image.select('green'),
'banda5': image.select('swir1'),
});
MNDWI_calc = image.expression(
'(( banda2 - banda5)**2 / (banda2 + banda5)**2)**(1/2)', {
'banda2': image.select('green'),
'banda5': image.select('swir1'),
});
NDVI_calc = image.expression(
'((banda4 - banda3)**2/ (banda4 + banda3)**2)**(1/2)', {
'banda4': image.select('nir'),
'banda3': image.select('red'),
'banda2': image.select('green'),
});
//Gerarndo MMDIv2 (Simplified Using Modules - Iury Angelo - "(abs(a-b) * abs(c+d) - abs(c-d) * abs(a+b))/(abs(a-b) * abs(c+d) + abs(c-d) * abs(a+b))"
MMDI_v1 = image.expression(
'(abs(banda2 - banda5) * abs(banda4 + banda3) - abs(banda4 - banda3) * (banda2 + banda5)) / (abs(banda2 - banda5) * abs(banda4 + banda3) + abs(banda4 - banda3) * abs(banda2 + banda5))', {
'banda2': image.select('green'),
'banda3': image.select('red'),
'banda4': image.select('nir'),
'banda5': image.select('swir1'),
});
var maskedImage = image
.addBands(image.metadata('system:time_start'))
.addBands(NDVI.rename('NDVI'))
.addBands(NDSI.rename('NDSI'))
.addBands(MNDWI.rename('MNDWI'))
.addBands(EVI.rename('EVI'))
.addBands(NDWI.rename('NDWI'))
.addBands(MMDI_v1.rename('MMRI'))
return maskedImage;
};
/// Main CODE
var studyArea = geometry;
var year = 2018;
var startDate = year+'-01-01';
var endDate = (year)+'-12-30';
var mosaicMerge = getImageCollection(studyArea,startDate,endDate).map(createIndexs).map(bqaFunction);
var paleta = ['008100', '389D2E', '76B956', 'A7D17A','D0E899', 'F8F4BD', 'F0D9CA', 'E2BFD1', 'D2A5D8', 'AC93E2', '7C85EF', '347AF9', '006CFD', '0057E0', '4238BA', '5614BC'];
var mosaicMerge_tradicional =mosaicMerge.median();
var mosaicMerge = mosaicMerge_tradicional.select(['green','red','nir','swir1','swir2']).multiply(255)
var mosaicMerge =mosaicMerge.addBands(mosaicMerge_tradicional.select(['NDSI','NDVI','MNDWI','NDWI','MMRI']).add(1).multiply(127))
Map.addLayer(mosaicMerge,{min:0,max:1,bands:['MNDWI'], palette: paleta},'MNDWI',false);
Map.addLayer(mosaicMerge,{min:0,max:1,bands:['NDVI'], palette: paleta},'NDVI',false);
Export.image.toAsset({
image:mosaicMerge.select(['red','nir','swir1','swir2','NDVI','NDWI','NDSI']).set({'year':year,'mosaic':1,'version':5,'collection':3}).toByte(),
description:'mosaico_zc_'+year+'_colecao5',
assetId:'projects/samm/SAMM/Mosaic/'+year,
scale: 30,
maxPixels:1e13,
region: geometry
});