[R] how to use confusionMatrix function in solving multi-classes problem

Dear Colleagues I need someone to kindly help me solving this problem. A sample of 89 patients was tested for 4 tumor types (T1, T2, T3, T4). The results of the operative predicted T stage and those of the pathology tests are tabulated in the following table: ..---

[R] Isotonic Regression

Dear Sir I am new to R.statistics. I am an Anaesthetist using the version Ri 386 3.2.2 I have tested the patients' response sequence for a dose sequence, and I need to calculate an estimate of the minimum dose that gives a certain effect on a certain percentage of the patients' number. I am using