# Granularity Considerations with Shape Training

If you are using shape training and your shapes are much larger or smaller than the image features they describe, you may need to adjust the granularity limits manually to preserve meaningful features from the pattern.

Note: If you are using the PatFlex algorithm with shape-trained models, you will almost certainly need to set the granularity limits manually. In almost all cases, the granularity limits will need to be reduced from the automatically selected limits. Carefully review the display of trained features to make sure that reasonable features are being trained.