pcoga2dim_diff_shape {coga} | R Documentation |
pcoga2dim
The difference of distribution functions of convolution of two gamma
distributions between consecutive neighbors of shape parameter. This
function evaluate the value of 'pcoga2dim(x, shape1, shape2, rate1, rate2)
- pcoga2dim(x, shape1 + 1, shape2, rate1, rate2)' with higher efficiency
(this function is much more faster than call pcoga2dim
two-times).
pcoga2dim_diff_shape(x, shape1, shape2, rate1, rate2)
x |
Quantiles. |
shape1 , shape2 |
Shape parameters of the first and second gamma distributions, both shape parameters should be larger than or equal to 0. |
rate1 , rate2 |
Rate parameters of the first and second gamma distributions, both rate parameters should be larger than 0. |
Chaoran Hu
## these pairs give us the same results
pcoga2dim_diff_shape(3,2,4,5,4)
pcoga2dim(3,2,4,5,4) - pcoga2dim(3,3,4,5,4)
pcoga2dim_diff_shape(3,0,4,3,5)
pgamma(3,4,5) - pcoga2dim(3,1,4,3,5)
pcoga2dim_diff_shape(3,6,0,5,4)
pgamma(3,6,5) - pgamma(3,7,5)
pcoga2dim_diff_shape(3,0,0,4,5)
1 - pgamma(3,1,4)