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rowval
2009 Jun 28
1
ERROR: system is computationally singular: reciprocal condition number = 4.90109e-18
...all("La_dgesv", a, b, tol, PACKAGE = "base")*
9: solve.default(Szz)
8: solve(Szz)
7: pcor.mat(firstvalue, secondvalue, third_var, method, na.rm = T)
6: PartialCorr_Calculation(value1, value2, third_var, method = "pearson",
na.rm = T)
5: Partial(contrld_third_var(rowvalues$matrix1, rowvalues$matrix2,
x <- stringOfItemCategoryToDataFrameOfItemCategory,
item_category_table,
pcor_type <- "ic"), data1, data2, pcor_thirdvar_type <- "all")
4: main()
3: eval.with.vis(expr, envir, enclos)
2: eval.with.vis(ei, envir)
1: source(&quo...
2009 Jun 25
2
Error: system is computationally singular: reciprocal condition number
I get this error while computing partial correlation.
*Error in solve.default(Szz) :
system is computationally singular: reciprocal condition number =
4.90109e-18*
Why is it?Can anyone give me some idea ,how do i get rid it it?
This is the function i use for calculating partial correlation.
pcor.mat <- function(x,y,z,method="p",na.rm=T){
x <- c(x)
y <- c(y)