I'm trying to download single NDVI image from Proba-V. Proba-V produces images every 2 days. Here (https://developers.google.com/earth-engine/datasets/catalog/VITO_PROBAV_C1_S1_TOC_100M) is the link of the product. When I try to export a single image, I am getting this error:
Line 28: subtracted.reproject is not a function
Why is that? A link to the (https://code.earthengine.google.com/93f8038dd0fcc25c9d1ddc1ecd763359) code and the code:
var dataset = ee.ImageCollection('VITO/PROBAV/C1/S1_TOC_100M') .filter(ee.Filter.date('2018-02-02', '2018-02-03')) .select('NDVI') .filterBounds(table); var subtracted = dataset.map(function (image) { return image.subtract(20).divide(250) }); // Project the image to Mollweide. var wkt = ' \ PROJCS["World_Mollweide", \ GEOGCS["GCS_WGS_1984", \ DATUM["WGS_1984", \ SPHEROID["WGS_1984",6378137,298.257223563]], \ PRIMEM["Greenwich",0], \ UNIT["Degree",0.017453292519943295]], \ PROJECTION["Mollweide"], \ PARAMETER["False_Easting",0], \ PARAMETER["False_Northing",0], \ PARAMETER["Central_Meridian",0], \ UNIT["Meter",1], \ AUTHORITY["EPSG","54009"]]'; var proj_mollweide = ee.Projection(wkt); var image_mollweide = subtracted.reproject({ crs: proj_mollweide, scale: 100 }); Export.image.toDrive({ image: image_mollweide, description: 'ndvi', scale: 100, //100 for Band10 maxPixels: 1000000000000, region: table, folder: 'Landsat-5'});
And the shapefile I am using (https://code.earthengine.google.com/?asset=users/nikostziokas/bangkok_54009).
// Project the image to Mollweide.
var wkt = ' \
PROJCS["World_Mollweide", \
GEOGCS["GCS_WGS_1984", \
DATUM["WGS_1984", \
SPHEROID["WGS_1984",6378137,298.257223563]], \
PRIMEM["Greenwich",0], \
UNIT["Degree",0.017453292519943295]], \
PROJECTION["Mollweide"], \
PARAMETER["False_Easting",0], \
PARAMETER["False_Northing",0], \
PARAMETER["Central_Meridian",0], \
UNIT["Meter",1], \
AUTHORITY["EPSG","54009"]]';
var proj_mollweide = ee.Projection(wkt);
var dataset = ee.ImageCollection('VITO/PROBAV/C1/S1_TOC_100M')
.filter(ee.Filter.date('2018-02-03', '2018-02-05'))
.select('NDVI')
.filterBounds(table);
var subtracted = dataset.map(function (image) {
return image.subtract(20)
.divide(250)
.reproject({crs: proj_mollweide, scale: 100})
.clip(table);
});
print("subtracted", subtracted);
var image_mollweide = subtracted.first();
Export.image.toDrive({
image: image_mollweide,
description: 'ndvi',
scale: 100, //100 for Band10
maxPixels: 1000000000000,
region: table,
folder: 'Landsat-5'
});
It sounds like you're looking for a way to export daily PROBA-V images using Google Earth Engine. Your current script filters and displays the images on the map, but does not export them. If you want to try this script that I attached, I hope it can help you.
var dataset = ee.ImageCollection('VITO/PROBAV/C1/S1_TOC_100M')
.filter(ee.Filter.date('2018-03-01', '2018-04-01'));
var falseColor = dataset.select(['RED', 'NIR', 'BLUE']);
var falseColorVis = { min: 20.0,
max: 2000.0,};
Map.setCenter(17.93, 7.71, 2);
Map.addLayer(falseColor, falseColorVis, 'False Color');
// Define an area to export (change to your desired area)
var region = ee.Geometry.Rectangle([0, 0, 10, 10]);
// Export each image in the collection
dataset.toList(dataset.size()).map(function(image) {
var date = ee.Image(image).date().format('yyyy-MM-dd');
Export.image.toDrive({
image: ee.Image(image),
description: 'PROBAV_' + date,
scale: 100,
region: region,
fileFormat: 'GeoTIFF',
maxPixels: 1e13
});
});
This script will export each image in the collection to your Google Drive in GeoTIFF format. You will need to replace
var region = ee.Geometry.Rectangle([0, 0, 10, 10]); with the coordinates of the region you want to export. Please note that the export may take some time, depending on the size of the images and the number of images in the collection. Also, this script will attempt to export all images in the collection, which could exceed your Google Drive storage quota if the collection is large. Make sure you have enough space on your Google Drive before running this script. Lastly, this script does not check if the images have been exported correctly. I would recommend that you manually check some of the exported images to make sure they exported correctly. Nikolaos Tziokas
Hope this script can help you.
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