MATLAB: Unable to use xlsread to open a file

for loopxlsread

Hey everyone,
I'm trying to run the follwing code:
for i=1:10
    fil_length= xlsread('\\some_pathway_here\Filament_Length_Data\Filament_Length_',num2str(i),'.xls')   
end
However, I get an error: Error using xlsread (line 132)
XLSREAD unable to open file '\\some_pathway_here\Filament_Length_Data\Filament_Length_'.
File '\\some_pathway_here\Filament_Length_Data\Filament_Length_' not found.
When I run this code: 
 fil_length= xlsread('\\some_pathway_here\Filament_Length_Data\Filament_Length_1.xls')
without the num2str(i) part, I'm able to read the file. Is it not possible to run a function such as this? If not, are there any other ways that i could access my excel files inside a loop?

Best Answer

for i=1:10
    fil_length= xlsread(['\\some_pathway_here\Filament_Length_Dat\Filament_Length_' num2str(i) '.xls'])   
end
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