How to do Design of Experiments with Box-Behnken design with my required levels?

Arul poomalai 님이 질문을 제출함. 18 May 2015

최근 활동 BISWAJYOTI PANI 님이 답변함. 15 Oct 2017

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I need to do Design of Experiments with Box-Behnken design. when i enter "dBB = bbdesign(3)" it will generate a 18x3 matrix like shown in figure. Here -1 means lower point. 0 means middle level.1 means upper level. But how can i set level for my levels to my value. The levels also shown in the figure.

i need to get the matrix like 40, 30 , 0.5 figure shown not -1, 0, 1.

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Thomas Koelen 님의 답변 18 May 2015

Thomas Koelen 님이 편집함. 18 May 2015

dBB=bbdesign(3);
dBB(dBB==-1)=40;
dBB(dBB==0)=30;
dBB(dBB==1)=0.5;
dBB

Here you go.

Dbb=
0000   40.0000   30.0000
0000    0.5000   30.0000
5000   40.0000   30.0000
5000    0.5000   30.0000
0000   30.0000   40.0000
0000   30.0000    0.5000
5000   30.0000   40.0000
5000   30.0000    0.5000
0000   40.0000   40.0000
0000   40.0000    0.5000
0000    0.5000   40.0000
0000    0.5000    0.5000
0000   30.0000   30.0000
0000   30.0000   30.0000
0000   30.0000   30.0000

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Arul poomalai 3 Jun 2015

Thanks a lot. But how can i get my design like this, figure attached.

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BISWAJYOTI PANI 님의 답변 15 Oct 2017

Its unfortunate to see that till the date there are no sequential steps available to create Box-Behnken DOE with the required levels. No option to know the point type (factorial or center point), Standard order, block which is essential part execute to BB-Design in other statistical software (like design expert, Minitab). Any developer viewing this requested to post the link or add the steps.

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