Reading first column of a .csv file

조회 수: 33 (최근 30일)
Zack Bayhan
Zack Bayhan 2015년 8월 29일
답변: Sahil Negi 2021년 10월 18일
Hi everyone, I'm having some difficulty getting the information I'm looking for extracted. I would like to pull everything from the first column from rows 2 to the end. When I use txtread I extract the entire document, I've tried a few other read functions however they produced errors. Any help would be greatly appreciated, I've attached the .csv file and the script producing the .csv file. Thanks in advanced and hope you all have a great weekend. Zack
fu=['https://raw.githubusercontent.com/datasets/s-and-p-500-companies/master/data/constituents-financials.csv'];
urlwrite(fu,'Symbols.csv')
symbols=textread('symbols.csv','%s');

채택된 답변

Star Strider
Star Strider 2015년 8월 30일
I would use xlsread:
[~,symbols] = xlsread('Symbols.csv', 'A:A');
This imports a (497x1) cell of the symbols in Column A, plus the column header ‘Symbol’, so you may only want to use the last 496.

추가 답변 (3개)

Walter Roberson
Walter Roberson 2015년 8월 30일
fid = fopen('symbols.csv', 'rt');
datacell = textscan(fid, '%[^,]%*[^\n]', 'HeaderLines', 1);
fclose(fid);
symbols = datacell{1};

Zack Bayhan
Zack Bayhan 2015년 8월 30일
Awesome thanks for the help once again, Star Strider! Worked like a charm, and was able to drop the header out so hopefully now I'll be able to use this data.

Sahil Negi
Sahil Negi 2021년 10월 18일
You can use importdata as shown below:
symbols = importdata('Symbols.csv');
column_1 = symbols.data(:, 1);
This should get your first column without the header.

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