How can I read in data from Excel where I have the row range stored as a variable

I am reading data from an excel sheet, and can read my data perfectly fine when I define the row range as a number, such as:

LPHYB = xlsread('Tungurahua_Activity_Log_temp.xlsx', ...
                'Hourly_Seismic_Record', 'G699:G1004');

However, I would like to be able to store my first row and last row as a variable, like this:

LPHYB = xlsread('Tungurahua_Activity_Log_temp.xlsx', ...
                'Hourly_Seismic_Record', 'Gstartrow:Gendrow');

This is not working. The error message reads:

 'Maximum variable size allowed by the program is exceeded.'

Answer 1

[Jan]

Matlab's error message is not clear. You can define the string as following:

LPHYB = xlsread('Tungurahua_Activity_Log_temp.xlsx', ...
              'Hourly_Seismic_Record', sprintf('G%d:G%d', startrow, endrow));