The xlsxread function in MATLAB can read data in Excel files, which provides convenience for data analysis and visualization. This article will introduce how to use the xlsxread function in detail.
The basic syntax of the xlsxread function is:
[num,txt,raw] = xlsxread(filename, sheet, range)
Among them, filename is the Excel file name (can include relative path or absolute path), sheet is the worksheet name or worksheet index number to be read, and range is the data range or cell address to be read (such as 'A1:G10 ').
return value:
- num: Numerical matrix of numeric data in the Excel file.
- txt: A character matrix of text data in an Excel file.
- raw: the matrix form of the raw data in the Excel file.
It should be noted that in Excel files, the detection of numbers, text and formulas is performed automatically, so when using the xlsxread function, these three types of data need to be processed separately.
Code example:
Let's look at a simple example. Suppose we have a "test.xlsx" file, which contains a worksheet named "Sheet1", including the following data:
| A | B | C |
|---|---|---|
| 1 | 2 | A |
| 3 | 4 | B |
Now, we want to read and store the data in the Excel table. We can use the following way:
[num,txt,raw] = xlsxread('test.xlsx', 'Sheet1', 'A1:C2');
In this way, we will get the values of num, txt and raw respectively:
- num = [1 2; 3 4]。
- txt = [‘A’ ‘B’; ‘C’ ‘D’]。
- raw = [1 2 ‘A’; 3 4 ‘B’]。
It should be noted that when reading an Excel file, using the xlsxread function requires that all cells to be read be included in the data range, otherwise data loss or offset may occur.
Summarize
The above is how to use the xlsxread function. By using the xlsxread function, we can easily read the data in the Excel file and save it in MATLAB for data analysis and visualization. It should be noted that when reading different types of data, attention should be paid to the format and quality of the data to avoid errors during data analysis.