Check category by enter utm coordinate

[Xin Zhuang]

Can you create a ground truth map?

If yes, you should be able to get the producer's accuracy
with several GRASS commands by comparing the classification
result lay with the ground truth layer.


--Xin
zhuang at access.digex.com


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Dear Sir:
I can not create a ground truth map, since I only have over one hundred ground truth sample points spread over my study area. If I have the ground truth map, I will just use it and I don't need to make classification. I think I forgot to tell you that I am doing supervised classification for the Landsat MSS digital images. I need to know how good is my classification. I got over one hundred sample points of forest types information from other Company. That's why I need to check each sample point on the classified map then calculate the percent correct.
Thanks for your suggestion.

John Wu