search for: xuhy

Hi there, Is there any package which can calculate the overlapping area of two polygons or output the coordinates of the overlapping of two polygons? Thanks. Haiyong

Hi there, I want to integrate a function over an irregular polygon. Is there any function which can implement this easily? Otherwise, I am thinking of divide the polygon into very small rectangles and use "adapt" to approximate it. Do you have any suggestions to get the fine division? Any advice is appreciated. Haiyong

Hi there, I want to do classify some 2-dimensional points into four clusters by pam() in the cluster package. However, I encountered some problems. 1. How can I change the "xlab" and "ylab" instead of the default "Component 1" and "Component 2"? When I put "xlab" option in the function, it always says "formal argument "xlab"

Hello, I am a beginner of R. I want to plot the vectors Y vs. X where X has continuous interger values. How can I use the name of each element as the tick label? Thanks a lot! Haiyong

Hello, I just want to ask if there is any function that can convert decimal number to binary vector. Thanks a lot. Haiyong