Re: Exporting a List of Tables with different Lengths to a tabulator

*To*: mathgroup at smc.vnet.net*Subject*: [mg110652] Re: Exporting a List of Tables with different Lengths to a tabulator*From*: hemke <h.maeter at gmail.com>*Date*: Wed, 30 Jun 2010 08:05:48 -0400 (EDT)*References*: <i0cor7$bug$1@smc.vnet.net> <i0eluk$dn3$1@smc.vnet.net>

Thanks a lot, Sjoerd! This is exactly what I was looking for. I wasn't aware of the Null symbol... Hemke Sjoerd C. de Vries schrieb: > Hi Hemke, > > My solution uses PadRight to make all matrices have the same lengths, > and ArrayFlatten to combine all matrices in a single rectangular one. > > Some example matrices: > > m = {{1, 2, 3}, {4, 5, 6}}; > n = {{7, 8, 9}, {1, 2, 3}, {4, 5, 6}}; > o = {{2, 4, 6}, {1, 3, 5}, {9, 7, 5}, {8, 6, 4}}; > > listA = {m, n, o}; > > The code: > > mostRows = Max[Length /@ listA]; > numColumns = Length[listA[[1, 1]]]; (*assumes, as given, that all > matrices have the same number of columns *) > newListA = > ArrayFlatten[{PadRight[#, {mostRows, numColumns}, Null] & /@ > listA}]; > Export["C:\\Documents and Settings\\Sjoerd\\Desktop\\New Text \ > Document.tsv", newListA, "TSV"] > > (The "TSV" part is superfluous if the filename already has this as > extension) > > Cheers -- Sjoerd > > > On Jun 29, 2:27 pm, hemke <h.mae... at gmail.com> wrote: >> Hi, >> >> I am trying to export some data I imported and then manipulated with >> mathematica. I have a List of several Tables, i.e. >> >> ListA={TableA, TableB, TableC, ...} >> >> A typical Table looks like this: >> >> TableA={{1,2},{4,5},...}. >> >> The Tables in ListA all have the same number of columns but differing >> number of rows. Now, I want to export these Tables into one tabulator >> separated file with the same structure, i.e. line N in the output file >> should contain the elements in row N of each Table, or in other words I >> want the following: >> >> TableA[[1,1]] TableA[[1,2]] TableB[[1,1]] TableB[[1,2]] .= > .. >> TableA[[2,1]] TableA[[2,2]] TableB[[2,1]] TableB[[2,2]] .= > .. >> ... ... ... = > ... >> TableA[[M-1,1]] TableA[[M-1,2]] TableB[[P,1]] TableB[[P,2]] ... >> TableA[[M,1]] TableA[[M,2]] = > ... >> Here I chose (as an example), Length[TableA]=M and Length[TableB]=P w= > ith >> M>P. >> >> I tried it with Export["myfile.dat", ListA] but it does not produce the >> desired output, instead it yields: >> >> {TableA[[1,1]],TableA[[1,2]]} {TableA[[2,1]],TableA[[2,2]]} ... >> {TableB[[1,1]],TableB[[1,2]]} {TableB[[2,1]],TableB[[2,2]]} ... >> ... ... >> >> (In the above, TableX[[i,j]] represents a number in the corresponding >> element of a table, and not the text "TableX[[i,j]]"... ;) ) >> >> Ok, I hope I explained the problem sufficiently. Probably there is a >> simple solution but I just don't see it. >> >> Please help! Thanks! >> >> Hemke > >