Why are my confusion matrix values all zeros? (ArcGIS Pro 2.4)

IsaacBarnhart — Tue, 05 Nov 2019 23:00:28 GMT

I have a raster dataset (of a field of crops) with 5 bands that I have classified using Image Segmentation. I'm trying to get the kappa value to investigate the errors of my classification method, but the matrix turns up empty.

I started with a raster dataset that I segmented, and from that segmented image, I generated training samples. I then classified the segmented image (using Random Tree) into 5 classes (leaves, grain heads, soil, shadows, and ground targets). The outputs generated from that process included a classified raster and a ECD file.

From there, I used the "Create Accuracy Points" to create the points needed to compute the confusion matrix. Parameters used:

Input Raster = {The raster I just classified}
Target Field = "Classified"
Number of Random Points = 500
Sampling strategy = "Stratified Random."

I then tried to compute the confusion matrix, but all my results are zeros. I'm not sure why. Is there something that I have to do to merge my accuracy points with the classes of my classified raster

Re: Why are my confusion matrix values all zeros? (ArcGIS Pro 2.4)

StijnBoer — Mon, 04 Apr 2022 10:22:19 GMT

Hello, I know this is a long shot since this post is almost 3 years old, but do you remember if you ever solved this issue? I'm currently experiencing the same problem.

Thanks in advance!

Re: Why are my confusion matrix values all zeros? (ArcGIS Pro 2.4)

mrgbeamish — Fri, 19 Apr 2024 15:22:59 GMT

Another long shot, but any chance you solved this issue and can remember how? Thank you!

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Why are my confusion matrix values all zeros? (ArcGIS Pro 2.4)

Re: Why are my confusion matrix values all zeros? (ArcGIS Pro 2.4)

Re: Why are my confusion matrix values all zeros? (ArcGIS Pro 2.4)