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My general question is: How can I put each of my outputs (a number) in a special cell of a given sheet of an excel file? for example I have built an excel file (say results.xlsx) and I want to fill it by my outputs (say out[i]s). For example I want to put out[1] in B5 cell of first sheet of results.xls, out[2] in C10 cell of second sheet of results.xls and etc. How can this be done?

We can simplify the above problem: suppose I have built a table (say outs) using my outputs and export it as an excel file () as follows

out[1] = 1;
out[2] = 2;
out[3] = 3;
out[4] = 4;

outs1=Table[out[i], {i, 1, 4}];
Export["results.xlsx", outs1, "Data"]

this command gives me an excel file which has a row including values of out1.

I run another .nb file and do the same namely I build another table (outs2) as follows

out[5] = 5;
out[6] = 6;
out[7] = 7;
out[8] = 8;

outs2=Table[out[i], {i, 5, 8}];

Now I want to put outs2 as second row of results.xlsx file. How?

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The common way is making a sparse array and putting there the result at the desired place.

s = SparseArray[{{11, 1} -> 1, {2, 2} -> 2, {3, 3} -> 3, {1, 13} -> 
     4}, {12, 15}, ""];
s // MatrixForm

enter image description here

Than you can export it to Excel

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  • $\begingroup$ Thanks a lot this was a useful way. In fact it was answer of my general question. But what about my second one? namely if I want to construct an excel file using different .nb files where outputs of each file make a row of an excel file? $\endgroup$
    – Wisdom
    Apr 9, 2021 at 4:36
  • $\begingroup$ @Wisdom, you should compose an output array containing all the data at the desired places before exporting. The easiest way for this is making sparse array from one data-set and further correction of elements by something like s[[3;;5,4;;7]]=subarray $\endgroup$
    – Rom38
    Apr 9, 2021 at 5:13
  • $\begingroup$ Many thanks. Do you mean there is no way to fill my excel file gradually and by running each .nb file (as I explained above)? I think there should be a way, because it doesn't seem a hard work $\endgroup$
    – Wisdom
    Apr 9, 2021 at 5:18
  • $\begingroup$ @Wisdom, of course, you can do it gradually. All the evaluated data of a Mathematica session are stored in the kernel. You can run step-by-step any cells from the different notebooks to make the inclusions of subarrays into the output array that was created at the beginning as sparse. $\endgroup$
    – Rom38
    Apr 9, 2021 at 5:39
  • $\begingroup$ Thanks I got it, however your suggestion has an additional intermediate step (constructing one data-set) but my mean was an one-step command in the each nb file. $\endgroup$
    – Wisdom
    Apr 9, 2021 at 6:06

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