0

I want to have raster with 30 m resolution. Using EE's reproject method:

lulc.reproject(crs='EPSG:4326', scale=30) (OR)
lulc.resample('bilinear').reproject(crs='EPSG:4326', scale=30)

Is giving raster with pixel size 0.02 but a 30m resolution raster has pixel size of 0.002 (Checked in QGIS)

I also used the following reference apart from the docs to know how to get higher resolution in Earth Engine: Resampling image or imagecollection to higher resolution in Google Earth Engine Python API

Edit: By changing the value of scale to 3 instead of 30, I got the pixel size in QGIS to 0.002 but I would like to know the difference between the scale in EE and the 30m resolution

Improve this question
1
  • 1
    What you're seeing is almost certainly that QGIS is showing scale in something like degrees or minutes, while Earth Engine is using meters. But it's hard to tell how that's playing out without knowing how you are getting the data from Earth Engine to QGIS. What parameters are you using for the download?
    – Noel Gorelick
    Commented Sep 21, 2022 at 10:28

1 Answer 1

Reset to default
0

Earth Engine and QGIS resolution are different. Also the parameter scale in reproject(crs='EPSG:4326', scale=30) does not give 30m resolution output.

If I change value of scale to scale=3, then I'm getting a 30m resolution output. 30m resolution on QGIS is equivalent to pixel size of 0.0002

This is what I observed.

There is a doc on Earth Engine about the scale they are using https://developers.google.com/earth-engine/guides/scale (But I couldn't comprehend)

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.