Strings from Loop to array

Question

Christopher Schoß 2022-5-9

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1714950-strings-from-loop-to-array

评论： dpb 2022-5-9

采纳的回答： KSSV

Hey,

I have the following loop:

for i=1:Parameter1

for j=1:Parameter2

Name=['Name_' int2str(i) '_' int2str(j)];

end

I want all the Names writen in one array with one column. Means a total of i*j rows.

How can I write this array?

Would appreciate some help!

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Stephen23 2022-5-9

Note: Star Strider's answer using COMPOSE (as dpb suggested) is simpler and more efficient than using loops.

dpb 2022-5-9

在 MATLAB Online 中打开

Yeah, but you don't even need compose here with the new string class --

 [I J]=meshgrid(1:3,1:3);
>> Names=string("Name_"+I+"_"+J)
Names = 
  3×3 string array
    "Name_1_1"    "Name_2_1"    "Name_3_1"
    "Name_1_2"    "Name_2_2"    "Name_3_2"
    "Name_1_3"    "Name_2_3"    "Name_3_3"
>> 

letting meshgrid deal with the implicit loop structure. There might even be a way with the new implicit expansion syntax although I've yet to fully grasp when/where it comes into play...let's see what happens if--

>> N1=3;N2=4;
>> string("Name_"+[1:N1]+"_"+[1:N2].')
ans = 
  4×3 string array
    "Name_1_1"    "Name_2_1"    "Name_3_1"
    "Name_1_2"    "Name_2_2"    "Name_3_2"
    "Name_1_3"    "Name_2_3"    "Name_3_3"
    "Name_1_4"    "Name_2_4"    "Name_3_4"
>> 

and "Yes, Virginia, there is a Santa Claus!" :)

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Answer 1

KSSV 2022-5-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1714950-strings-from-loop-to-array#answer_960230

在 MATLAB Online 中打开

Parameter1 = 5 ; 
Parameter2 = 5 ; 
Name = cell(Parameter1,Parameter2) ; 
for i=1:Parameter1
    for j=1:Parameter2
        Name{i,j}=['Name_' int2str(i) '_' int2str(j)];
    end
end
Name
Name = 5×5 cell array
    {'Name_1_1'}    {'Name_1_2'}    {'Name_1_3'}    {'Name_1_4'}    {'Name_1_5'}
    {'Name_2_1'}    {'Name_2_2'}    {'Name_2_3'}    {'Name_2_4'}    {'Name_2_5'}
    {'Name_3_1'}    {'Name_3_2'}    {'Name_3_3'}    {'Name_3_4'}    {'Name_3_5'}
    {'Name_4_1'}    {'Name_4_2'}    {'Name_4_3'}    {'Name_4_4'}    {'Name_4_5'}
    {'Name_5_1'}    {'Name_5_2'}    {'Name_5_3'}    {'Name_5_4'}    {'Name_5_5'}