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Wolfram Language

Where do I put the Join[] in this expression?

Timo Kuchheuser

Posted 5 years ago

Hey! So maybe I'm just not seeing something, but where would it put a Join[] in the following expression to get just one list and not a list of lists? In[]:= Table[Table[N[frequencyPitch[o, p]], {p, 1, intervalFundamentalPartition}], {o, 0, 1}] Out[]= {{16.3516, 17.3239, 18.354, 19.4454, 20.6017, 21.8268, 23.1247, 24.4997, 25.9565, 27.5, 29.1352, 30.8677}, {32.7032, 34.6478, 36.7081, 38.8909, 41.2034, 43.6535, 46.2493, 48.9994, 51.9131, 55., 58.2705, 61.7354}} If I use Catenate[] around the above expression it works; but I read somewhere I should use Join[] if working with pure lists. Thank you very much! Tim

Hey! So maybe I'm just not seeing something, but where would it put a Join[] in the following expression to get just one list and not a list of lists?

In[]:= Table[Table[N[frequencyPitch[o, p]], {p, 1, intervalFundamentalPartition}], {o, 0, 1}]

Out[]= {{16.3516, 17.3239, 18.354, 19.4454, 20.6017, 21.8268, 
  23.1247, 24.4997, 25.9565, 27.5, 29.1352, 30.8677}, {32.7032, 
  34.6478, 36.7081, 38.8909, 41.2034, 43.6535, 46.2493, 48.9994, 
  51.9131, 55., 58.2705, 61.7354}}

If I use Catenate[] around the above expression it works; but I read somewhere I should use Join[] if working with pure lists.

Thank you very much!

Tim

POSTED BY: Timo Kuchheuser

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Henrik Schachner

Henrik Schachner, Radiation Therapy Center, Weilheim, Germany

Posted 5 years ago

Hi Tim, the function you are asking for is `Flatten`: llist = {{16.3516, 17.3239, 18.354, 19.4454, 20.6017, 21.8268, 23.1247, 24.4997, 25.9565, 27.5, 29.1352, 30.8677}, {32.7032, 34.6478, 36.7081, 38.8909, 41.2034, 43.6535, 46.2493, 48.9994, 51.9131, 55., 58.2705, 61.7354}}; Flatten[llist] But in this case you could use `Join` like so: Join @@ llist Regards -- Henrik

Hi Tim,

the function you are asking for is Flatten:

llist = {{16.3516, 17.3239, 18.354, 19.4454, 20.6017, 21.8268, 
    23.1247, 24.4997, 25.9565, 27.5, 29.1352, 30.8677}, {32.7032, 
    34.6478, 36.7081, 38.8909, 41.2034, 43.6535, 46.2493, 48.9994, 
    51.9131, 55., 58.2705, 61.7354}};
Flatten[llist]

But in this case you could use Join like so:

Join @@ llist

Regards -- Henrik

POSTED BY: Henrik Schachner

Timo Kuchheuser

Posted 5 years ago

That worked! Thank you very much! Danke!

POSTED BY: Timo Kuchheuser

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