How to create BIB and making some of the Treatments blank or missing values

[Shomo_olongus]

How can I create a BIBD with some of the treatments replace with missing values. So let say I have 4 treatments but I am selecting 3 at a time. With each of the 3 selected I can have 6 different arrangement but with one of the treatments missing. Let me illustrate it

trt1 trt2 trt3 trt4  

 1     1    1               block 1

 1     1            1       block 2

 1           1      1       block 3

        1    1      1       block 4

for block 1 I can have  using ranks (trt4 is missing)

trt1 trt2 trt3 trt4  

1      2    3

1      3    2

2      1    3

2      3    1

3      1    2

3      2    1

for block 1 I can have  using ranks (trt3 is missing)

trt1 trt2 trt3 trt4  

1      2          3

1      3          2

2      1          3

2      3          1

3      1          2

3      2          1

this will go own up to block 4.

[VDD]

have you looked at call missing, or setting options missing = 0;

[Shomo_olongus]

No please, I don't know that function. The problem is, I will calculating modified jonckheere terpstra (mJT), for each block.
That is I will go through each row and if a rank is less than another rank in a trt i will assign 1, for example
trt1 trt2 trt3 trt4

1 2 3

MJT = (1) + 2(1) + 3(0)+1+2(0)+(0)
for trt1 and trt2 1
for trt1 and trt3 is (3-1)*1

the factor is the difference between the treatments . and because the trt4 is missing any value with it is 0.

I will then sum the MJT for each block and find the mean and variance.

[ballardw]

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@Shomo_olongus wrote:

How can I create a BIBD with some of the treatments replace with missing values. So let say I have 4 treatments but I am selecting 3 at a time. With each of the 3 selected I can have 6 different arrangement but with one of the treatments missing. Let me illustrate it

trt1 trt2 trt3 trt4  

 1     1    1               block 1

 1     1            1       block 2

 1           1      1       block 3

        1    1      1       block 4

for block 1 I can have  using ranks (trt4 is missing)

trt1 trt2 trt3 trt4  

1      2    3

1      3    2

2      1    3

2      3    1

3      1    2

3      2    1

for block 1 I can have  using ranks (trt3 is missing)

trt1 trt2 trt3 trt4  

1      2          3

1      3          2

2      1          3

2      3          1

3      1          2

3      2          1

this will go own up to block 4.

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I may be dense today but from you post I 1) cannot tell what your starting data actually looks like or 2) what you want the output to look like.

I think you are looking for PROC PLAN but you aren't clear as to which type of design you may be looking for.