I've already answered your question. The letter "a" means the group 300 is better the group 0 (letter c). Do you know some way to put some letters in my vbar? If you don't know, I will give up. ... View more

Ok, I ran another code with Tukey test. You can see it below. According to my statistics, I want to put the letter 'a in group 300', 'ab in groups 100, 200 and control' and put the letter 'c in group 0'. I want to do a graph like that (second graph).   data teste; input source$ rep Carbon; cards; Controle 1 10.1 Controle 2 10.63 Controle 3 10.34 Controle 4 11.51 Controle 5 12.4 0 1 9.63 0 2 12.63 0 3 10.28 0 4 10.93 0 5 10.63 100 1 10.46 100 2 11.87 100 3 9.28 100 4 14.8 100 5 13.04 200 1 13.34 200 2 12.04 200 3 9.81 200 4 9.99 200 5 13.86 300 1 11.22 300 2 12.63 300 3 14.86 300 4 17.92 300 5 15.69 ; proc glm data=teste plots=diagnostics; class source; model carbon = source; means source / hovtest=levene(type=abs) tukey; run; proc sgplot data=teste noautolegend noborder; vbar source / response=carbon stat=mean limitstat=stderr limitattrs=(color=black) fillattrs=(color=VIGB) outlineattrs=(color="black") datalabel datalabelattrs=(color=black size=10 family="Times New Roman") fillattrs=(color=VIGB) outlineattrs=(color="black") ; yaxis label="Soil carbon" LABELATTRS=(Color=black Family="Times New Roman" Size=12) valueattrs=(Color=black Family="Times New Roman" Size=10); xaxis label="Source of nutrient" LABELATTRS=(Color=black Family="Times New Roman" Size=12) valueattrs=(Color=black Family="Times New Roman" Size=10); run;     ... View more

The letters came from the Tukey test, meaning that group 0 is different from group 100, etc., so the letters help us understand which group is greater. For example, I want to put the "letter a" above stderr bar of group 300. How can I do that? If I have to modify my dataset, how can I do that? Do you understand my doubt?  ... View more

if you run my code, you will see one graph with five bars. So I want to know how I can put some letters above them. For example, "a, b, c, d and e" above each stderr bar. Do you understand?    ... View more

I change my PROC SGPLOT code with:title "pH do solo em função de fontes de adubos"; proc sgplot data=composto2 noautolegend noborder; vbar trat / response=Nsolo stat=mean limitstat=stderr limitattrs=(color=black) fillattrs=(color=VIGB) outlineattrs=(color="black") datalabel datalabelattrs=(color=black size=10 family="Times New Roman") fillattrs=(color=VIGB) outlineattrs=(color="black") ; yaxis label="pH do solo" LABELATTRS=(Color=black Family="Times New Roman" Size=12) valueattrs=(Color=black Family="Times New Roman" Size=10); xaxis label="Fonte de adubo" LABELATTRS=(Color=black Family="Times New Roman" Size=12) valueattrs=(Color=black Family="Times New Roman" Size=10); run; Now I can put stderr bar, but I couldn't put the letters to mark significant differences. Please help me. ... View more

Thanks for answer me. For "insert standard error" I wanna mean an error bar. I want also to add letters above each bar, such as "a, b, c, d and e". My current code is below:   data teste; input trat$ rep pHsolo; cards; Controle 1 7.51 Controle 2 7.1 Controle 3 7.71 Controle 4 7.6 Controle 5 7.44 0 1 7.69 0 2 6.76 0 3 6.54 0 4 7.3 0 5 7.64 100 1 7.57 100 2 7.13 100 3 7.6 100 4 7.56 100 5 7.87 200 1 7.56 200 2 7.67 200 3 7.73 200 4 7.58 200 5 7.55 300 1 7.67 300 2 7.41 300 3 7.77 300 4 7.58 300 5 7.81 ; title "pH do solo em função de fontes de adubos"; proc sgplot data=composto2 noautolegend noborder; vbar trat / response=Nsolo datalabel datalabelattrs=(color=black size=10 family=arial) fillattrs=(color=VIGB) outlineattrs=(color="black") ; yaxis label="pH do solo" LABELATTRS=(Color=black Family=Arial Size=12) valueattrs=(Color=black Family=Arial Size=10); xaxis label="Fonte de adubo" LABELATTRS=(Color=black Family=Arial Size=12) valueattrs=(Color=black Family=Arial Size=10); run; ... View more