Find what you're seeing, then try the fix next to it. Every change waits for
Run classification, and older runs stay in the list to compare.
| What you see | Why it happens | What to try |
| A class painted where it isn't (mines showing as plain barren, say) |
One class is covering two different things |
Split that class: a zoo model, or your own polygons |
| A split class mostly missed (low recall) |
Too few examples, or all from one corner |
Add polygons spread across the area, then train again |
| Your upload is refused |
A polygon with no class, the wrong projection, or points and lines |
Read the message; start from the example file |
| The map didn't change after an edit |
Nothing reruns by itself |
Press Run classification |
| Download says the area is too big |
Earth Engine can't export it as one file |
Make a smaller project over that patch |
| A zoo model fits your area badly |
It was trained somewhere else |
Check its card (where, which year, scores), or train your own |
| The new run is worse than the old one |
The last change didn't help |
Click the older run to bring it back; undo the change in the class tree |
Inside your project zip
| project.json | name, area, year and base map |
| hierarchy.json | your class tree |
| examples/ | the polygons behind each class you trained |
| weights/ | the models you trained or applied |
| op_log.json | every change, in order |
| runs/run_N/ | one folder per run: the scheme frozen as it was, and run.json |
Open the GeoTIFF in QGIS; the class codes are in run.json. Import the zip on the
start screen to pick up where you left off.