pixel values

[krhodes9]

Do you have any suggestions for viewing/extracting the feature values from the the images brought into QGIS using the plug-in? I am working over a large study area and all the pixels only display a value of no-data.

[gena]

Querying a value manually should work out of the box, but you will have to use EE API to query many values, e.g. reduceRegion + ee.Reducer.toList or getRegion or export.

Or do you mean FeatureCollections?

[krhodes9]

I am trying to create a monthly composite image within a defined region of interest. The image is created, but there are no values showing for any of the pixels.

[gena]

Sorry for the very long delay, did the issue resolve? Otherwise, can you share your python script to debug?

[wkordo]

I am currently having the same issue. I am using the WWF Hydrosheds image, and it creates the image as desired, however when I inspect a pixel, it does not return a value for b1 to indicate direction. I have attached an image and my python script.

import ee
from ee_plugin import Map

image = ee.Image('WWF/HydroSHEDS/03DIR');

vizParams = {
'bands': ['b1'],
'min': 1,
'max': 128,
'palette': ['000000', '023858', '006837', '1a9850', '66bd63', 'a6d96a', 'd9ef8b',
'ffffbf', 'fee08b', 'fdae61', 'f46d43', 'd73027']

};

Map.setCenter(-88.48236,47.16566, 15);
Map.addLayer(image, vizParams, 'Drainage Direction');

[gena]

That's strange, I've just tested (Win11, QGIS 3.18, EE plugin 0.0.5) and it seems to work just fine

Can you double-check with the same experiment, after making sure you have the latest version of the plugin and QGIS installed (start QGIS, create a new map, run the script, select the newly added layer, click inspect with the info tool)?

[wkordo]

Running the same script in QGIS 3.22.3 and EE plugin 0.0.5 I now cannot gather any information from identify features tool. When clicking any point on the layer it returns "no features found at this location" which can be seen in the bottom left.

[gena]

Can you try changing the map projection to EPSG:3857? I think this is probably the reason.

[wkordo]

This works with QGIS version 3.16, but not 3.22. Thank you, that is enough for me to work with.

[gena]

Happy to hear that the workaround works. It's a bug and it will be fixed. Thanks for reporting!

[spatialthoughts]

For QGIS 3.22 the workaround also doesn't work. You get 'no features found at this location' even after setting the CRS to 3857.

[gena]

Oh! Thanks for letting me know, it looks like it's time for a new bugfix release.

…

On Tue, Nov 29, 2022, 8:23 AM Ujaval Gandhi ***@***.***> wrote: For QGIS 3.22 the workaround also doesn't work. You get 'no features found at this location' even after setting the CRS to 3857. — Reply to this email directly, view it on GitHub <#99 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABJOXMDLYDG6O37CYFP4K3WKWVNPANCNFSM47WABFUQ> . You are receiving this because you commented.Message ID: <gee-community/qgis-earthengine-plugin/repo-discussions/99/comments/4260884 @github.com>

[gena]

Should be fixed in v0.0.6