I'm working with location data (latitude and longitude coordinates obtained in GPS) to delimit areas of life with kernel and MCP in the AdehabitatHR package. I have already prepared the excel file containing individuals' names, information such as gender and reproductive condition, and the X and Y coordinates.
What I have is something similar to the one below, but including at least 50 individuals and several locations of each:
Ind Sex X Y
A 1 19.10991 -48.23536
B 2 19.11009 -48.23545
I follow the package commands and ask to convert the file to sp:
coordinates(track) <- c("X", "Y")
And I still get the same error:
Error in '[.data.frame'(object, , value) : undefined columns selected
I've also tried to do it differently:
tracksp<- SpatialPoints(track)
And then I get the error below:
Error in .checkNumericCoerce2double(obj) : cannot retrieve coordinates from non-numeric elements
I'm stuck. I believe it's the format that my coordinates are appearing in excel so that R can understand them. Can you help me?
Thank you