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Creating cloud free imagery and applying NDVI calculation to NAIP, Sentinel 2, and L8 collections using Google Earth Engine?

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0

I'm trying to get cloud and shadow-free (or as close to cloud free) scenes for Landsat 8, NAIP, and Sentinel 2 (specifically sentinel 2 10 meter resolution), and then apply the NDVI calculation to each set.

After that, I'd like to look at those values within specific polygon geometries I've created, but that's a separate thing I'd like to try on my own first!

I'm fairly new to GEE, and though I've watched the tutorials I still have some trouble with basic things it seems.

Here is just the portion I have so far for Landsat 8, though it's not running error-free.

// add three imagery layers to neighborhoods and filter date

var l8filtered = landsat8.filterDate('2016-10-01', '2016-10-31'); 

                         .sort('CLOUD_COVER');

                         .first());



// send to console/add to map

print(l8filtered, "l8 filter")

Map.addLayer(l8filtered,{},"L8")



//create NDVI image

var l8_ndvi = l8filtered.normalizedDifference(['B5','B4']);

Map.addLayer(l8_ndvi,{min:-0.1, max:0.1, palette:['FFFFFF', '339900']},'L8 NDVI');

For the cloud shadow - I've been sleuthing a did come across this post, however it's not quite making sense to me.

For the Landsat 8 imagery specifically - am I right in defining the bands in the l8_ndvi variable, or should I be calling the bands out before that?

google-earth-engine

share|improve this question

edited 1 min ago

PolyGeo♦

53.6k1781243

asked 18 mins ago

ChrisChris

12

New contributor

Chris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

I'm trying to get cloud and shadow-free (or as close to cloud free) scenes for Landsat 8, NAIP, and Sentinel 2 (specifically sentinel 2 10 meter resolution), and then apply the NDVI calculation to each set.

After that, I'd like to look at those values within specific polygon geometries I've created, but that's a separate thing I'd like to try on my own first!

I'm fairly new to GEE, and though I've watched the tutorials I still have some trouble with basic things it seems.

Here is just the portion I have so far for Landsat 8, though it's not running error-free.

// add three imagery layers to neighborhoods and filter date

var l8filtered = landsat8.filterDate('2016-10-01', '2016-10-31'); 

                         .sort('CLOUD_COVER');

                         .first());



// send to console/add to map

print(l8filtered, "l8 filter")

Map.addLayer(l8filtered,{},"L8")



//create NDVI image

var l8_ndvi = l8filtered.normalizedDifference(['B5','B4']);

Map.addLayer(l8_ndvi,{min:-0.1, max:0.1, palette:['FFFFFF', '339900']},'L8 NDVI');

For the cloud shadow - I've been sleuthing a did come across this post, however it's not quite making sense to me.

For the Landsat 8 imagery specifically - am I right in defining the bands in the l8_ndvi variable, or should I be calling the bands out before that?

google-earth-engine

share|improve this question

edited 1 min ago

PolyGeo♦

53.6k1781243

asked 18 mins ago

ChrisChris

12

New contributor

Chris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I'm trying to get cloud and shadow-free (or as close to cloud free) scenes for Landsat 8, NAIP, and Sentinel 2 (specifically sentinel 2 10 meter resolution), and then apply the NDVI calculation to each set.

After that, I'd like to look at those values within specific polygon geometries I've created, but that's a separate thing I'd like to try on my own first!

I'm fairly new to GEE, and though I've watched the tutorials I still have some trouble with basic things it seems.

Here is just the portion I have so far for Landsat 8, though it's not running error-free.

// add three imagery layers to neighborhoods and filter date

var l8filtered = landsat8.filterDate('2016-10-01', '2016-10-31'); 

                         .sort('CLOUD_COVER');

                         .first());



// send to console/add to map

print(l8filtered, "l8 filter")

Map.addLayer(l8filtered,{},"L8")



//create NDVI image

var l8_ndvi = l8filtered.normalizedDifference(['B5','B4']);

Map.addLayer(l8_ndvi,{min:-0.1, max:0.1, palette:['FFFFFF', '339900']},'L8 NDVI');

For the cloud shadow - I've been sleuthing a did come across this post, however it's not quite making sense to me.

For the Landsat 8 imagery specifically - am I right in defining the bands in the l8_ndvi variable, or should I be calling the bands out before that?

google-earth-engine

share|improve this question

edited 1 min ago

PolyGeo♦

53.6k1781243

asked 18 mins ago

ChrisChris

12

New contributor

Chris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

// add three imagery layers to neighborhoods and filter date

var l8filtered = landsat8.filterDate('2016-10-01', '2016-10-31'); 

                         .sort('CLOUD_COVER');

                         .first());



// send to console/add to map

print(l8filtered, "l8 filter")

Map.addLayer(l8filtered,{},"L8")



//create NDVI image

var l8_ndvi = l8filtered.normalizedDifference(['B5','B4']);

Map.addLayer(l8_ndvi,{min:-0.1, max:0.1, palette:['FFFFFF', '339900']},'L8 NDVI');

share|improve this question

edited 1 min ago

PolyGeo♦

53.6k1781243

asked 18 mins ago

ChrisChris

12

New contributor

Chris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 1 min ago

PolyGeo♦

53.6k1781243

asked 18 mins ago

ChrisChris

12

New contributor

Chris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 1 min ago

PolyGeo♦

53.6k1781243

edited 1 min ago

PolyGeo♦

53.6k1781243

asked 18 mins ago

ChrisChris

12

New contributor

Chris is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 18 mins ago

ChrisChris

12