Combine `Table` with `Riffle`

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I have table of function f[x,a]. For the sake of easy reproduction, let's limit it to a few entries - the original is over 1000 x 1000:



actualtable=Table[f[x, a], x, 0, 4, a, 1, 4]
*f[0, 1], f[0, 2], f[0, 3], f[0, 4], f[1, 1], f[1, 2], f[1, 3], 
f[1, 4], f[2, 1], f[2, 2], f[2, 3], f[2, 4], f[3, 1], f[3, 2], 
f[3, 3], f[3, 4], f[4, 1], f[4, 2], f[4, 3], f[4, 4]*


I want to find a way to interject a value m between each list item, to create



desiredtable=f[0, 1], m, f[0, 2], m, f[0, 3], m, f[0, 4], f[1, 1], m, f[1, 2], 
m, f[1, 3], m, f[1, 4], f[2, 1], m, f[2, 2], m, f[2, 3], m, 
f[2, 4], f[3, 1], m, f[3, 2], m, f[3, 3], m, f[3, 4], f[4, 1], 
m, f[4, 2], m, f[4, 3], m, f[4, 4]


I tried using Riffle in conjunction with Table, but it only injects m in between lines, rather than in between individual entries.



Obviously, with a tiny table like this, it's easy, I can just type in the ms, or type the Riffle command once for each line of the output.



But for a very big table, how do I do it?






list-manipulation table







share|improve this question

























    up vote
    3
    down vote

    favorite












    I have table of function f[x,a]. For the sake of easy reproduction, let's limit it to a few entries - the original is over 1000 x 1000:



    actualtable=Table[f[x, a], x, 0, 4, a, 1, 4]
    *f[0, 1], f[0, 2], f[0, 3], f[0, 4], f[1, 1], f[1, 2], f[1, 3], 
    f[1, 4], f[2, 1], f[2, 2], f[2, 3], f[2, 4], f[3, 1], f[3, 2], 
    f[3, 3], f[3, 4], f[4, 1], f[4, 2], f[4, 3], f[4, 4]*


    I want to find a way to interject a value m between each list item, to create



    desiredtable=f[0, 1], m, f[0, 2], m, f[0, 3], m, f[0, 4], f[1, 1], m, f[1, 2], 
    m, f[1, 3], m, f[1, 4], f[2, 1], m, f[2, 2], m, f[2, 3], m, 
    f[2, 4], f[3, 1], m, f[3, 2], m, f[3, 3], m, f[3, 4], f[4, 1], 
    m, f[4, 2], m, f[4, 3], m, f[4, 4]


    I tried using Riffle in conjunction with Table, but it only injects m in between lines, rather than in between individual entries.



    Obviously, with a tiny table like this, it's easy, I can just type in the ms, or type the Riffle command once for each line of the output.



    But for a very big table, how do I do it?






    list-manipulation table







    share|improve this question























      up vote
      3
      down vote

      favorite









      up vote
      3
      down vote

      favorite











      I have table of function f[x,a]. For the sake of easy reproduction, let's limit it to a few entries - the original is over 1000 x 1000:



      actualtable=Table[f[x, a], x, 0, 4, a, 1, 4]
      *f[0, 1], f[0, 2], f[0, 3], f[0, 4], f[1, 1], f[1, 2], f[1, 3], 
      f[1, 4], f[2, 1], f[2, 2], f[2, 3], f[2, 4], f[3, 1], f[3, 2], 
      f[3, 3], f[3, 4], f[4, 1], f[4, 2], f[4, 3], f[4, 4]*


      I want to find a way to interject a value m between each list item, to create



      desiredtable=f[0, 1], m, f[0, 2], m, f[0, 3], m, f[0, 4], f[1, 1], m, f[1, 2], 
      m, f[1, 3], m, f[1, 4], f[2, 1], m, f[2, 2], m, f[2, 3], m, 
      f[2, 4], f[3, 1], m, f[3, 2], m, f[3, 3], m, f[3, 4], f[4, 1], 
      m, f[4, 2], m, f[4, 3], m, f[4, 4]


      I tried using Riffle in conjunction with Table, but it only injects m in between lines, rather than in between individual entries.



      Obviously, with a tiny table like this, it's easy, I can just type in the ms, or type the Riffle command once for each line of the output.



      But for a very big table, how do I do it?






      list-manipulation table







      share|improve this question













      I have table of function f[x,a]. For the sake of easy reproduction, let's limit it to a few entries - the original is over 1000 x 1000:



      actualtable=Table[f[x, a], x, 0, 4, a, 1, 4]
      *f[0, 1], f[0, 2], f[0, 3], f[0, 4], f[1, 1], f[1, 2], f[1, 3], 
      f[1, 4], f[2, 1], f[2, 2], f[2, 3], f[2, 4], f[3, 1], f[3, 2], 
      f[3, 3], f[3, 4], f[4, 1], f[4, 2], f[4, 3], f[4, 4]*


      I want to find a way to interject a value m between each list item, to create



      desiredtable=f[0, 1], m, f[0, 2], m, f[0, 3], m, f[0, 4], f[1, 1], m, f[1, 2], 
      m, f[1, 3], m, f[1, 4], f[2, 1], m, f[2, 2], m, f[2, 3], m, 
      f[2, 4], f[3, 1], m, f[3, 2], m, f[3, 3], m, f[3, 4], f[4, 1], 
      m, f[4, 2], m, f[4, 3], m, f[4, 4]


      I tried using Riffle in conjunction with Table, but it only injects m in between lines, rather than in between individual entries.



      Obviously, with a tiny table like this, it's easy, I can just type in the ms, or type the Riffle command once for each line of the output.



      But for a very big table, how do I do it?






      list-manipulation table




      list-manipulation table






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      share|improve this question











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      asked 1 hour ago









      Richard Burke-Ward

      3237




      3237




















          1 Answer
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          Map Riffle to each of the element of actualTable: 



           desiredtable = Riffle[#, "m"] & /@ actualtable


          (* f[0, 1], "m", f[0, 2], "m", f[0, 3], "m", f[0, 4], f[1, 1], "m",
          f[1, 2], "m", f[1, 3], "m", f[1, 4], f[2, 1], "m", f[2, 2], "m",
          f[2, 3], "m", f[2, 4], f[3, 1], "m", f[3, 2], "m", f[3, 3], "m",
          f[3, 4], f[4, 1], "m", f[4, 2], "m", f[4, 3], "m", f[4, 4]*)






          share|improve this answer




















          • Perfect. Thanks.
            – Richard Burke-Ward
            1 hour ago










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          1 Answer
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          active

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          2
          down vote



          accepted










          Map Riffle to each of the element of actualTable: 



           desiredtable = Riffle[#, "m"] & /@ actualtable


          (* f[0, 1], "m", f[0, 2], "m", f[0, 3], "m", f[0, 4], f[1, 1], "m",
          f[1, 2], "m", f[1, 3], "m", f[1, 4], f[2, 1], "m", f[2, 2], "m",
          f[2, 3], "m", f[2, 4], f[3, 1], "m", f[3, 2], "m", f[3, 3], "m",
          f[3, 4], f[4, 1], "m", f[4, 2], "m", f[4, 3], "m", f[4, 4]*)






          share|improve this answer




















          • Perfect. Thanks.
            – Richard Burke-Ward
            1 hour ago














          up vote
          2
          down vote



          accepted










          Map Riffle to each of the element of actualTable: 



           desiredtable = Riffle[#, "m"] & /@ actualtable


          (* f[0, 1], "m", f[0, 2], "m", f[0, 3], "m", f[0, 4], f[1, 1], "m",
          f[1, 2], "m", f[1, 3], "m", f[1, 4], f[2, 1], "m", f[2, 2], "m",
          f[2, 3], "m", f[2, 4], f[3, 1], "m", f[3, 2], "m", f[3, 3], "m",
          f[3, 4], f[4, 1], "m", f[4, 2], "m", f[4, 3], "m", f[4, 4]*)






          share|improve this answer




















          • Perfect. Thanks.
            – Richard Burke-Ward
            1 hour ago












          up vote
          2
          down vote



          accepted







          up vote
          2
          down vote



          accepted






          Map Riffle to each of the element of actualTable: 



           desiredtable = Riffle[#, "m"] & /@ actualtable


          (* f[0, 1], "m", f[0, 2], "m", f[0, 3], "m", f[0, 4], f[1, 1], "m",
          f[1, 2], "m", f[1, 3], "m", f[1, 4], f[2, 1], "m", f[2, 2], "m",
          f[2, 3], "m", f[2, 4], f[3, 1], "m", f[3, 2], "m", f[3, 3], "m",
          f[3, 4], f[4, 1], "m", f[4, 2], "m", f[4, 3], "m", f[4, 4]*)






          share|improve this answer












          Map Riffle to each of the element of actualTable: 



           desiredtable = Riffle[#, "m"] & /@ actualtable


          (* f[0, 1], "m", f[0, 2], "m", f[0, 3], "m", f[0, 4], f[1, 1], "m",
          f[1, 2], "m", f[1, 3], "m", f[1, 4], f[2, 1], "m", f[2, 2], "m",
          f[2, 3], "m", f[2, 4], f[3, 1], "m", f[3, 2], "m", f[3, 3], "m",
          f[3, 4], f[4, 1], "m", f[4, 2], "m", f[4, 3], "m", f[4, 4]*)







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 1 hour ago









          FredrikD

          5071521




          5071521











          • Perfect. Thanks.
            – Richard Burke-Ward
            1 hour ago
















          • Perfect. Thanks.
            – Richard Burke-Ward
            1 hour ago















          Perfect. Thanks.
          – Richard Burke-Ward
          1 hour ago




          Perfect. Thanks.
          – Richard Burke-Ward
          1 hour ago

















           

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