I have two cellArray which class are cell. I want to extract first column of these cellArray.

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sermet 2013-7-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/81526-i-have-two-cellarray-which-class-are-cell-i-want-to-extract-first-column-of-these-cellarray

cellArray=

    ' 334      4261461.0645      2661117.6797      3918916.0472'
    ' 352       4266205.852        2659683.96      3914798.2885'
    ' 404      4258400.8221       2662966.354       3920634.872'
    ' 414      4255211.3943      2666063.0462      3921735.7546'
    %cellArray      8x1              1824  cell

I want to create a matrix form of this cellArray and extract first column.

(334-352-404-414)

cellArray2=

    ' N334      4261461.0645      2661117.6797      3918916.0472'
    ' N352       4266205.852        2659683.96      3914798.2885'
    ' N404      4258400.8221       2662966.354       3920634.872'
    ' N414      4255211.3943      2666063.0462      3921735.7546'

%I wanna extract first column of this cellArray2 if we think this is a matrix.

(N334-N352-N404-N414)

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Answer 1

Andrei Bobrov 2013-7-9

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https://ww2.mathworks.cn/matlabcentral/answers/81526-i-have-two-cellarray-which-class-are-cell-i-want-to-extract-first-column-of-these-cellarray#answer_91244

在 MATLAB Online 中打开

cellArray ={'  334      4261461.0645      2661117.6797      3918916.0472'
'  352       4266205.852        2659683.96      3914798.2885'
'  404      4258400.8221       2662966.354       3920634.872'
'  414      4255211.3943      2666063.0462      3921735.7546'};
out1 = regexp(cellArray,'(?<=^\s*)\d*','match');
out1 = cat(1,out1{:});
cellArray2 ={'  N334      4261461.0645      2661117.6797      3918916.0472'
'  N352       4266205.852        2659683.96      3914798.2885'
'  N404      4258400.8221       2662966.354       3920634.872'
'  N414      4255211.3943      2666063.0462      3921735.7546'};
out2 = regexp(cellArray2,'N\d*','match');
out2 = cat(1,out2{:});