Displaying 6 results from an estimated 6 matches for "srid".
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said
2012 Sep 10
1
E-mail # 2 / attachments matrix test cases
HI Sridhar,
Try this:
#I saved the file as .csv.
?testMaster<-read.csv("test1Master.csv")
?test2Sorted<-read.csv("test2Sorted.csv")
testMaster1<-testMaster[order(testMaster[,1]),]
test2Sorted1<-test2Sorted[order(test2Sorted[,1]),]
Combinedat<-as.matrix(merge(testMaster1...
2012 Sep 10
1
R- merging two matrix
...T, U, V, ....... (same names, but different order) - has one value
I need to create a master matrix with data from these two.
How do I take the numerical value for Q (from Matrix B) and append it to the
values in Matrix A. (so it becomes the 5th value in the master file)
Thank you very much
Srid Iyer
2006 Apr 06
1
rounding of voronoi vertices using deldir()
...uot;insert into mytable (the_geom) values(geomfromtext('POLYGON((")
for (j in 1:length(tile$x)) {
cat (tile$x[[j]],' ',tile$y[[j]],",")
}
cat (tile$x[[1]],' ',tile$y[[1]]) #close polygon
cat ("))',32718));\n") # add SRID and newline
}
sink() # output to terminal
q()
n
Regards,
Mike
2006 May 01
0
PostGIS and MySql Spatial Extensions in Rails
...efine a "restaurants" table in a
migration, along with a spatial index on the geometric column:
ActiveRecord::Schema.define do
create_table "restaurants", :force => true do |t|
t.column "data", :string
t.column "geom", :point, :null=>false, :srid => 123
end
add_index "restaurants", "geom", :spatial=>true
end
Here is the model to use it:
class Restaurant < ActiveRecord::Base
end
And you would access the geom column in the following way:
rt = Restaurant.find_first
puts rt.geom.x #access the geom column l...
2008 Mar 05
1
New data source - now how do we build an R interface?
Folks,
A nice new data resource has come up -- http://data.un.org/
I thought it would be wonderful to setup an R function like
tseries::get.hist.quote() which would be able to pull in some or all
of this data.
I walked around a bit of it and I'm not able to map the resources to
predictable URLs which can then be wget. There's some javascript going
on that I'm not understanding.
2006 Jul 11
18
Zip Code Ranges
Does anyone have any recommendations for working with zip code distance
ranges? I need to calculate the distances between US zip codes.
Thanks!
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