Displaying 2 results from an estimated 2 matches for "x_utm".
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y_utm
2006 Oct 07
1
random point in a circle centred in a geographical position
...om points in a circle? (I couldn?t find any)
2. Do you think the code bellow produces uneven locations?
3. Any suggestions to programme the ?rejection method?? Maybe someone has already used it...
Cheers
albert
#Code random location in a circle
# Generate UTM coordinates (original location)
> x_utm<-c(289800)
> y_utm<-c(4603900)
> coord<-as.data.frame(cbind(x_utm,y_utm))
# Generate a random radius with a maximum distance of 1000 meters from the original location.
>radius<-runif(1,0,1000)
# Generate a random angle
>angle<-runif(1,0,360)
#Generate a random x coordinat...
2007 Feb 27
0
Optimizing the loop for large data
...n=1000 and p=10.
Here is what I wrote so far, but seems to be inefficient. I appreciate
if someone help me out.
library(foreign)
library(MASS)
D<-read.dbf('data/Indianapolis015.dbf') # import a data
# data looks like this
LONGLAB X Y Perimeter Area X_UTM
Y_UTM F0 F1 F2
1 TAZ 18011:1000 -86.25985 39.95286 2.061630 0.1862549 50600.38
4435792 235 0 35
2 TAZ 18011:1001 -86.31030 39.97591 3.657006 0.7305006 46440.80
4438608 0 0 0
3 TAZ 18011:1002 -86.29542 39.97054 3.516089 0.6408084 47677.31
4437936 155 0 15
4 TAZ 18011:1...