https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/448939#M69573 <P>Dear All,</P><P>Please, I am working with plant response variables that are leaf rank dependent. A good example is the leaf length of all leaves on a plant. I chose the mixed model's analysis platform in JMP PRO 13. Measurements were done four times during the growing period. The treatments were four species and three levels of nitrogen. I followed "the fitting repeated measures with JMP PRO 13 ppt.." below.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="MomentMonster90_0-1641321792390.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/38719i5D296956AB541578/image-size/medium?v=v2&amp;px=400" role="button" title="MomentMonster90_0-1641321792390.png" alt="MomentMonster90_0-1641321792390.png" /></span></P><P>I chose the time-dependent covariance structures (AR1, Spatial, Toeplitz and antedependent). However, I could only get results when the leaf ranks for the treatments were the same. My data has different leaf ranks per plant (treatment) because of the differences in the development of individual plants. How can I treat the issue of unequal leaf ranks for plants which develop faster than the others? Finding an approach to handle the unequal leaf ranks is important because there are four different species with different developmental rates (leaf ranks) that are being compared.</P><P>My fixed model was: Full factorial of species, N level and leaf rank.</P><P>The repeated was either time as a continuous or nominal variable.</P><P>The subject was developed as unique numbers for treatments at each measurement date.</P><P>&nbsp;</P><P>I appreciate any help you can provide.</P> Fri, 09 Jun 2023 00:43:47 GMT MomentMonster90 2023-06-09T00:43:47Z https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/448939#M69573 <P>Dear All,</P><P>Please, I am working with plant response variables that are leaf rank dependent. A good example is the leaf length of all leaves on a plant. I chose the mixed model's analysis platform in JMP PRO 13. Measurements were done four times during the growing period. The treatments were four species and three levels of nitrogen. I followed "the fitting repeated measures with JMP PRO 13 ppt.." below.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="MomentMonster90_0-1641321792390.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/38719i5D296956AB541578/image-size/medium?v=v2&amp;px=400" role="button" title="MomentMonster90_0-1641321792390.png" alt="MomentMonster90_0-1641321792390.png" /></span></P><P>I chose the time-dependent covariance structures (AR1, Spatial, Toeplitz and antedependent). However, I could only get results when the leaf ranks for the treatments were the same. My data has different leaf ranks per plant (treatment) because of the differences in the development of individual plants. How can I treat the issue of unequal leaf ranks for plants which develop faster than the others? Finding an approach to handle the unequal leaf ranks is important because there are four different species with different developmental rates (leaf ranks) that are being compared.</P><P>My fixed model was: Full factorial of species, N level and leaf rank.</P><P>The repeated was either time as a continuous or nominal variable.</P><P>The subject was developed as unique numbers for treatments at each measurement date.</P><P>&nbsp;</P><P>I appreciate any help you can provide.</P> Fri, 09 Jun 2023 00:43:47 GMT https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/448939#M69573 MomentMonster90 2023-06-09T00:43:47Z https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/458028#M70320 <P>Please no community help?</P> Thu, 03 Feb 2022 12:36:30 GMT https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/458028#M70320 MomentMonster90 2022-02-03T12:36:30Z https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/458144#M70329 <P>Here is <A href="https://www.jmp.com/support/notes/30/584.html" target="_self">another resource</A> that might help you.</P> Thu, 03 Feb 2022 14:57:55 GMT https://community.jmp.com/t5/Discussions/Handling-plant-response-variables-that-are-leaf-position-rank/m-p/458144#M70329 Mark_Bailey 2022-02-03T14:57:55Z