RF classification error

[itsabhinash]

I want to classify the image based on just one class.(crop area and non crop area)...the code is working but while generating the output it says - Classifier training failed: 'Only one class.'

cant i classify the image as binary classfication....code is below

The code -

#ndvi_new is an median image with band ndvi and plant is a feature collection of set of points with property crop class as 1 for all points

def func_gtv(feature):
return feature.set({"crop_class":1, "crop_name":"Bamboo"})

plant =ee.FeatureCollection('users/species').map(func_gtv)
plant

label = "crop_class"

training = ndvi_new.sampleRegions(
**{"collection": plant, "properties": [label], "scale": 10}
)

bands = ["ndvi"]

trained = ee.Classifier.smileCart().train(training, label, bands)

trained

print(training.first().getInfo())

result = ndvi_new.classify(trained)

m.addLayer(result, {}, "classified")
m

#error at this step as - EEException: Classifier training failed: 'Only one class.'.

[giswqs]

You need two classes: crop and non-crop. Add training samples for non-crop area.

[itsabhinash]

Thank you sir