在上面的代码中,readmatrix函数用于读取整个CSV文件,然后使用data(:, 2)语句提取出第二列数据,并最终使用disp函数显示第二列数据。 另外,如果CSV文件中包含表头(header),可以使用readmatrix函数的'NumHeaderLines'参数来指定跳过的行数,例如: data = readmatrix('data.csv', 'NumHeaderLines', 1); % 跳过第一行表...
% readineach word of line28in'file'to a cell array, words words = strread(file{28},'%s','delimiter','') CODE: Example 3:Using TEXTREAD to read in text and numeric data from a file with headers % This command skips the2header lines at the top of the file % and readsineach colu...
CSVREAD用来读分隔符是逗号的文件,是DLMREAD的特殊情况。当读空格和Tab分隔的电子数据表文件时,DLMREAD特别有用。以'sample_file.txt'为例: CODE: Example 1: Using DLMREAD to read in a file with headers, text, and numeric data % This reads in the file 'sample_file2.txt' and creates a matrix, ...
CSVREAD用来读分隔符是逗号的文件,是DLMREAD的特殊情况。当读空格和Tab分隔的电子数据表文件时,DLMREAD特别有用。以'sample_file.txt'为例: Example 1: Using DLMREAD to read in a file with headers, text, and numeric data % This reads in the file '...
This is a file header. This is file is an example. col1 col2 col3 col4 A 1 4 612.000 B 1 4 613.000 C 1 4 614.000 D 1 4 615.000 Example: Using IMPORTDATA to read in a file with headers, text, and numeric data CODE:
2）Bulk load是通过一个MapReduce Job来实现的，通过Job直接生成一个HBase的内部HFile格式文件来形成一...
CSVREAD用来读分隔符是逗号的文件,是DLMREAD的特殊情况。当读空格和Tab分隔的电子数据表文件时,DLMREAD特别有用。以'sample_file.txt'为例: CODE: Example 1: Using DLMREAD to read in a file with headers, text, andnumeric data % This reads in the file 'sample_file2.txt' and creates a matrix, ...
To import data from a CSV file into MATLAB use the “readtable” function. The “readtable” function automatically detects the header and the number of lines to skip. T = readtable('myfile.csv'); Alternatively, you can specify the number of lines to skip using: T = readtable('myfile...
IMPORTDATA形成UIIMPORT的功能,不打开GUI。可以将IMPORTDATA用于函数或者脚本中,因为在函数或者脚本中基于GUI的文件导入机制并不理想。下面的例子用到包含几行文件头和文本、数值数据的文件'sample_file2.txt' : This is a file header. This is file is an example. ...
CSVREAD用来读分隔符是逗号的文件,是DLMREAD的特殊情况。当读空格和Tab分隔的电子数据表文件时,DLMREAD特别有用。以'sample_file.txt'为例: CODE: Example 1: Using DLMREAD to read in a file with headers, text, and numeric data % This reads in the file 'sample_file2.txt' and creates a matrix,...