I am extracting rooftops in an orthophoto using feature analyst. i prepared my training samples and runned the program to extract the rooftops. Initially after several trials i still could not get any results, no changes to the training samples at all. So i deleted everything and prepared a new training set. This time when i runned the program i received an error message "No training examples available for <class 0>" . The error message suggested to check masking settings. There are two files in the workspace, the masked area of interest and the training samples. I have tried selecting both of them and only the training sample but same error message. How do i resolve this?
The error problem has been addressed by checking Exclude pixel value and putting in 000 for the pixel values for bands 1,2 and 3 respectively. But still the program run without extracting the rooftops.
The error problem has been addressed by checking Exclude pixel value and putting in 000 for the pixel values for bands 1,2 and 3 respectively. But still the program run without extracting the rooftops.
I am extracting land cover features in Feature Analyst and I am getting the same error message. I tried changing the masking of the pixel value bands of 1,2, & 3 to 000 but I am still getting the error. Also since there are 4 bands I even tried putting 000 for all 4. I am unaware of any other possible solution.
