Concatenate the index i within the loop

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Amanda Camarata 2023-12-9

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评论： Dyuman Joshi 2023-12-9

I'm trying to create a list for my legend without hard coding it, but I'm having trouble figure out how to concatenate the number associated with 'i' in my loop.

I'm hoping I'll end up with a list of strings = ['Node 1','Node 2','Node 3'....]

num_labels = 10;
num_labels = 10
labels = zeros(1,num_labels);
for i = 1:num_labels
    labels(1,i) = strcat('Node',i);
end
Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-5.

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Dyuman Joshi 2023-12-9

在 MATLAB Online 中打开

A method using strings -

num = 10;
labels = "Node " + (1:num)
labels = 1×10 string array
    "Node 1"    "Node 2"    "Node 3"    "Node 4"    "Node 5"    "Node 6"    "Node 7"    "Node 8"    "Node 9"    "Node 10"

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Answer 1

Star Strider 2023-12-9

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https://ww2.mathworks.cn/matlabcentral/answers/2058494-concatenate-the-index-i-within-the-loop#answer_1368649

编辑：Star Strider 2023-12-9

在 MATLAB Online 中打开

Use the compose function —

num_labels = 10;
labels = compose('Node %d',1:num_labels)
labels = 1×10 cell array
    {'Node 1'}    {'Node 2'}    {'Node 3'}    {'Node 4'}    {'Node 5'}    {'Node 6'}    {'Node 7'}    {'Node 8'}    {'Node 9'}    {'Node 10'}

.