Reads from an Excel® spreadsheet into a GAUSS string array or string.
xlsReadSA(file[, range[, sheet[, vls]]])¶
file (string) – name of
range (string) – Optional input, range to read, e.g. “A2:B20” or the starting point of the read, e.g. “A2”. Default = “A1”.
sheet (scalar) – Optional input, sheet number. Default = 1.
vls (null string or 9x1 string array) – Optional input, specifies the conversion of Excel® empty cells and special types into GAUSS (see Remarks). A null string results in all empty cells and special types being converted to null strings. Default = null string.
s (string) – string array or a scalar error code.
Windows, Linux and macOS
The vls input is currently ignored on macOS and Linux. Missing values will be returned for all cells that are empty or contain errors.
Basic Example with Starting Cell and Sheet Number¶
Read all contents from the file
yarn.xlsx located in the GAUSS examples directory as a string array.
// Create file name with full path file = getGAUSSHome() $+ "examples/yarn.xlsx"; //"A1" means start from A1 // 1 = sheet number s = xlsReadSA(file, "A1", 1);
After the above code, the first 5 rows of s will equal:
yarn_length amplitude load cycles low low low 674 low low med 370 low low high 292 low med low 338
Read From a Range¶
// Create file name with full path file = getGAUSSHome() $+ "examples/yarn.xlsx"; s = xlsReadSA(file, "B3:C4");
After the above code, s will equal:
low med low high
Read your own data¶
If you have a file named
myfile.xlsx located in your current GAUSS working directory, the
code below will read all of its contents into a string array.
s = xlsReadSA("myfile.xlsx");
If range is a null string, then by default the read will begin at cell “A1”.
If a full path to the Excel file is not provided,
xlsReadSA()will look for the file in your current working directory.
loaddSA()to load all rows, except for the header row, from specific columns of an Excel file.
Print error message and terminate program.
Return scalar error code.
// Will end the program and print an error message x = xlsReadSA("nonexistent_file.xlsx");
// Turn error trapping on trap 1; x = xlsReadSA("nonexistent_file.xlsx"); // Check to see if 'x' is a scalar error code if scalmiss(x); // Code to handle error case here endif; // Turn error trapping off trap 0;
By default, empty cells are imported as empty strings. The vls argument lets users control the import of Excel® empty cells and special types, according to the following table:
Use the following to convert all occurrences of
#NULL!and empty cells to the string ‘NULL’, and all other and special types to empty strings:
// Create a 9x1 vector of empty strings vls = reshape("",9,1); // Set the 1st and 8th element of 'vls' to the string 'NULL' so that // Excel #NULL! and empty cells will be imported as the string 'NULL' vls = "NULL"; vls = "NULL"; x = xlsReadSA("myfile.xlsx", "A1", 1, vls);