Hello, I have created many excel files in my working dir. each excel file contain one country's data. In the excel, I have dataframe in sheet1, where each product and its relative information is in each row as following:
Product PE Retail_price_Band Country Model_Fit A -2.5 0-50 CN 84% B -2.1 51-100 CN 90% ..... not every product presents in each country, in other words, they may have common products or not. How do I create program in R to search each excel file in my working dir in order to make the list of the such product for each country based on my input(for example, I want to have all information related to product B in each country) the result what I want: Product PE Retail_price_Band Country Model_Fit B -2.4 51-100 IN 80% B -2.1 51-100 CN 90% How do I achieve this? thanks. Kind regards, Lingyi [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.