search for: 7e6

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2007 Sep 14
8
Cortado java applet
I looking for a simple way to use cortado java applet on my website, help --------------------------------- Sick of deleting your inbox? Yahoo!7 Mail has free unlimited storage. Get it now. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20070915/2df326af/attachment.htm
2024 Apr 07
1
Question regarding reservoir volume and water level
...yone could help me. > Sincerely > > > > > > > > Hello, This is a simple rule of three. If you know the level l the argument doesn't need to be named but if you know the volume v then it must be named. water_level <- function(l, v, level = 1240, volume = 7e6) { if(missing(v)) { volume * l / level } else level * v / volume } lev <- 1250 vol <- 14e6 water_level(l = lev) #> [1] 7056452 water_level(v = vol) #> [1] 2480 Hope this helps, Rui Barradas -- Este e-mail foi analisado pelo software antiv?rus AVG para verificar a pres...
2004 Nov 18
4
Enormous Datasets
Dear List, I have some projects where I use enormous datasets. For instance, the 5% PUMS microdata from the Census Bureau. After deleting cases I may have a dataset with 7 million+ rows and 50+ columns. Will R handle a datafile of this size? If so, how? Thank you in advance, Tom Volscho ************************************ Thomas W. Volscho Graduate Student Dept. of Sociology U-2068
2024 Apr 07
1
Question regarding reservoir volume and water level
...ppy if anyone could help me. > Sincerely > > > > > > > > Hello, This is a simple rule of three. If you know the level l the argument doesn't need to be named but if you know the volume v then it must be named. water_level <- function(l, v, level = 1240, volume = 7e6) { if(missing(v)) { volume * l / level } else level * v / volume } lev <- 1250 vol <- 14e6 water_level(l = lev) #> [1] 7056452 water_level(v = vol) #> [1] 2480 Hope this helps, Rui Barradas -- Este e-mail foi analisado pelo software antiv?rus AVG para verificar a prese...
2024 Apr 09
1
Question regarding reservoir volume and water level
...1255 >> m. The area of its reservoir can be calculated by drawing a polygon around >> the water and it is known. >> I have the Digital Elevation Model (DEM) of the region (reservoir and its >> surrounding area). I have calculated the volume of the current reservoir >> (7e6 m3) using the following codes. >> library(raster) >> library(terra) >> library(exactextractr) >> library(dplyr) >> library(sf) >> # Calculate volume for polygon >> # Read the DEM raster file >> r <- rast("E:/...DEM.tif") >> # Read t...
2024 Apr 07
1
Question regarding reservoir volume and water level
...ppy if anyone could help me. > Sincerely > > > > > > > > Hello, This is a simple rule of three. If you know the level l the argument doesn't need to be named but if you know the volume v then it must be named. water_level <- function(l, v, level = 1240, volume = 7e6) { if(missing(v)) { volume * l / level } else level * v / volume } lev <- 1250 vol <- 14e6 water_level(l = lev) #> [1] 7056452 water_level(v = vol) #> [1] 2480 Hope this helps, Rui Barradas -- Este e-mail foi analisado pelo software antiv?rus AVG para verificar a prese...
2024 Apr 10
1
Question regarding reservoir volume and water level
...ts reservoir can be calculated by drawing a polygon > around > >> the water and it is known. > >> I have the Digital Elevation Model (DEM) of the region (reservoir and > its > >> surrounding area). I have calculated the volume of the current reservoir > >> (7e6 m3) using the following codes. > >> library(raster) > >> library(terra) > >> library(exactextractr) > >> library(dplyr) > >> library(sf) > >> # Calculate volume for polygon > >> # Read the DEM raster file > >> r <- rast(&quo...
2024 Apr 07
2
Question regarding reservoir volume and water level
Dear all; I have a question about the water level of a reservoir, when the volume changed or doubled. There is a DEM file with the highest elevation 1267 m. The lowest elevation is 1230 m. The current volume of the reservoir is 7,000,000 m3 at 1240 m. Now I want to know what would be the water level if the volume rises to 1250 m? or what would be the water level if the volume doubled (14,000,000
2012 Sep 02
0
most efficient plyr solution
...isher exact test p-value) iteratively using 4 matrices with identical dimensions. And as a result I aim for an array with identical dimensions containing the corresponding p-values. Please consider some code using a trivial example with 3x4 arrays below. Eventually I would like to run code on 2e3 x 7e6 arrays, for which someone suggested Amazon EC2 already... Q1: would you agree that fisher.test() is not vectorizable? e.g. fisher.test( matrix(c(Ax,Ay,Bx,By),ncol=2) ) does not work Q2: direct use of Ax, Ay, Bx, By as input instead of a (list) transform for the input would seem beneficial for spee...