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.
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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