assign characters in a for loop combined with switch case and then merge to a long string

Question

Christian 2021-5-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/826615-assign-characters-in-a-for-loop-combined-with-switch-case-and-then-merge-to-a-long-string

回答： Christian 2021-5-10

Hi all!

I want to assign a string array with one column and many rows containing binary values to an alphabetical character. However, this alphabetical character array should be transposed. Thus, it has only one row and many columns. In the last step, i want to combine all these columns into one cell using strjoin().

bitstream = 120×1 string array
    "00001"
    "00010"
    "00011"
    "00000"
    "00001"
    "Error"
    "00011"
    ...

if exist('bitstream','var') ~= 0 % if bitstream exist, get into
    for idx = 1:size(bitstream,1)
        switch bitstream(idx,1)
            case "00000"
            outputText(1, idx) = " ";  
            break;
            case "00001"
            outputText(1, idx) = "A";  
            break;
            case "00010"
            outputText(1, idx) = "B";  
            break;
            case "00011"
            outputText(1, idx) = "C";  
            break;
            otherwise
            outputText(1, idx) = "_"; 
        end
    end
outputDisplay(1,1:end) = strjoin(outputText)
end

The result should look like outputDisplay = "ABC A_C"

There is no error in my code, but it doesnt work and I couldn't figure out why... In most cases he jumps way to early out of the for loop. But it is not consistent...

outputText =
  Columns 1 through 21
   "A"   "B" % 118 values should follow here!

Is a query of strings within a switch case query like case "00001" not possible? Should I use if, else if statements instead?

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Answer 1

Christian 2021-5-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/826615-assign-characters-in-a-for-loop-combined-with-switch-case-and-then-merge-to-a-long-string#answer_696555

WTF... sorry folks, I might be a bit tired from coding. I took things from c and didn't pay attention to the fact that break; in matlab obviously leaves the switch case.