Reading data from Excel file in r

Question

I want to read data from a big excel file like this:

From the fifth column, from first row until 140, but only 1,3,5,7,.....139 (only 70 values):

wb          


        

Answer 1

The vignette on XlConnect suggests

options(java.parameters = "-Xmx2048m")

before loading the XlConnect package.

EDIT: You could try to reduce the size of the xlsx, maybe delete unneeded columns. You could save the sheet as CSV. You could use RODBC, as @Ananta suggested.