similar to: Merge xts

Displaying 5 results from an estimated 5 matches similar to: "Merge xts"

2009 Feb 13
0
[LLVMdev] Modeling GPU vector registers, again (with my implementation)
On Feb 13, 2009, at 9:47 AM, Alex wrote: > It seems to me that LLVM sub-register is not for the following > hardware architecture. > > All instructions of a hardware are vector instructions. All > registers contains > 4 32-bit FP sub-registers. They are called r0.x, r0.y, r0.z, r0.w. > > Most instructions write more than one elements in this way: > > mul
2009 Feb 13
3
[LLVMdev] Modeling GPU vector registers, again (with my implementation)
It seems to me that LLVM sub-register is not for the following hardware architecture. All instructions of a hardware are vector instructions. All registers contains 4 32-bit FP sub-registers. They are called r0.x, r0.y, r0.z, r0.w. Most instructions write more than one elements in this way: mul r0.xyw, r1, r2 add r0.z, r3, r4 sub r5, r0, r1 Notice that the four elements of r0 are written
2010 Nov 19
2
Calculating distance between longitude,latitude of 2 points
Hi all, I would like to know a way of calculating the distance between 2 points when I already have the longitude and latitude of the points. For example : Point 1 : 52? 9'54.00"N 4?25'8.40"E Point 2 : 52?27'46.80"N 4?33'18.00"E Distance between point 1 and point in km .... Is there any functions already available for this ? Any help will be much
2010 Aug 16
1
data frame handling
Dear all, I have an xts object , t.xts with 4 columns: "v1" "DD1" "v2" "DD2" and created a data frame : t <- as.data.frame(t.xts) I would like to extract data and create a new data frame for when the values in column DD1 falls between 0 and 30 and extract the corresponding v1 value. How can I do this? Thanks. -- View this message in context:
2010 Jul 30
2
Data Handling
Hi, I am very new to R so these questions may seem simple! I have a huge 2 sets of data(matrix 5x20000++) in the following formats , for example "data.txt" and "data2.txt": Date Time X Y 03/03/1983 20:00 0.1 990 I would like to recreate a new matrix which filters through "data.txt" and