[R] proportional sampling

Dear All, I wonder if you could help me. I have a table with a series of sites that I would like to sample from. The table has 5 columns: ID X Coordinate Y Coordinate Value Factor The conditions are that each site can be selected more than once and the probability of it being selected (or

[R] random sample from a file

Dear All, Thanks to all that responded to my earlier query. I have a file with two columns: an ID field and a Data field. I wish to extract multiple random samples of 20 numbers from this file in such a way that the ID field is extracted with the data as well. At the moment I am using the

[R] plot xy data with error bars

Dear All, I have x,y data with errors associated with both x and y. What would be the easiest way of creating plots with both x and y ? Thanks __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read

[R] plot xy data with error bars

Dear All, I have x,y data with errors associated with both x and y. What would be the easiest way of creating plots with both x and y error bars? Thanks __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help