Rainfall erosivity map preparation

[Kofi_Lartey]

I am trying to develop rainfall erosivity map over a study area using 30yrs period rainfall data. i have determined the R for each year, rainfall erosivity for each year, how do i use this to prepare a map showing the rainfall erosivity for the entire study area.

[Kofi_Lartey]

@ Dan, i agree with you and this is noted as one of the limitations of the map. I changed the extent in the environment setting and it worked. What i have is a rainfall erosivity map which will be used together with other maps to show a trend. The import of this is what can be done if data is available. Very grateful to all your useful and insightful comments.