Am 20.09.2016 um 17:39 schrieb AQ:
> I want to fill a 6 by 3 array with either a 0 or a 1 chosen at random
> and then use these values in a colour map.  I thought it would be easy
> but the code below gives an error and I cannot see why.  
> 
> #declare Col = array[7][4]
> #for (j,0,6,1)
>   #for (k,1,3,1)
>     Col[j][k] = int(2*rand(R))

You'll want to use

    #declare Col[j][k] = int(2*rand(R))


> colour_map {
>               [0.0/6  rgb < Col[0,1], Col[0,2], Col[0,3] >]        
>               [1.0/6  rgb < Col[1,1], Col[1,2], Col[1,3] >] 
>               [2.0/6  rgb < Col[2,1], Col[2,2], Col[2,3] >] 
>               [3.0/6  rgb < Col[3,1], Col[3,2], Col[3,3] >] 
>               [4.0/6  rgb < Col[1,1], Col[4,2], Col[4,3] >] 
>               [5.0/6  rgb < Col[5,1], Col[5,2], Col[5,3] >] 
>               [6.0/6  rgb < Col[6,1], Col[6,2], Col[6,3] >]
>             }

You'll also want to replace Col[x,y] with Col[x][y].

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