Linear and Quadratic Plateau Graphs in Sigmaplot

[@alebachewayalew489]

I would like to say simply thank you!!!

[@cardmovies]

Hi professor. Thanks for the video! I tried to use your code, but all I got was a line that starts at 0 and finishes at 0 as well. My points are pretty much a quadratic plateau though. Do you know what happened? Thanks in advance!

[@sonighimire4469]

Hello! Would you mind letting me how did you get the value of X0= -0.5*b/c?

[@lynnee7780]

Hi professor, I have a question about the fertilizer rate, and I sent an email to you last week... Did you see that?

[@sdstatesoilfertility]

Yes and I sent you a reply. Thank you fo ryour question.

[@diogoturbo]

can you teach us how to find the x and y numbers using another program? if possible use R studio please

[@sdstatesoilfertility]

I know there is a package in R to do this but I mostly use SAS for this and have not had the time yet to make a video, but I will consider it in the future.

[@learningbydoing7480]

is it possible to change the more spacing range at y-ticks, for example :I would like to see (20, 50, 100, 150, 200) ? Because the y-ticks are more clumsy therefore I need more gap between each y-tick but total range is still from 20-200 (as per your example: time 5:00).

[@sdstatesoilfertility]

I know you can change it to even increments. To change it as suggested you might need to make a break in X axis and do an increment of 20 before and then do 50 after the break.

[@learningbydoing7480]

@@sdstatesoilfertility thanks for your answer, but still I don't want to use the break options. Simply enlarge the ticks. If we use "origin plot there we have an option called increment. This will automatically increments the x or y ticks. Without changing the minimum and maximum of tick value. I hope I provide relevant information, thanks

[@sdstatesoilfertility]

@@learningbydoing7480 Then I'm not sure of another way.

[@learningbydoing7480]

@@sdstatesoilfertility Thank you so much