Excel Macro for creating bar chart

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Hi All,

I have a perl script in linux environment where i go through some files
and generate a "csv" file as below:

,YES,NO,UNKNOWN
Monday,10,20,5
Tuesday,20,30,15
Wednesday,30,20,40

Then i transfer into a drive which i can access through windows
machine.

Can somebody help me on how to create 'bar chart' with this data. This
should be done automatically. I am new to writing excel macros and am
not getting how to start with it.

Thanks for your time.

.