epi.asc

Writes a data frame to an ASCII raster file, suitable for display in a Geographic Information System.

univar

Tools for the analysis of epidemiological and surveillance data. Contains functions for directly and indirectly adjusting measures of disease frequency, quantifying measures of association on the basis of single or multiple strata of count data presented in a contingency table, computation of confidence intervals around incidence risk and incidence rate estimates and sample size calculations for cross-sectional, case-control and cohort studies. Surveillance tools include functions to calculate an appropriate sample size for 1- and 2-stage representative freedom surveys, functions to estimate surveillance system sensitivity and functions to support scenario tree modelling analyses.

Mark Stevenson

epiR

Tools for the Analysis of Epidemiological Data

Evan Sergeant

Cord Heuer

Telmo Nunes

Jonathon Marshall

Javier Sanchez

Ron Thornton

Jeno Reiczigel

Jim Robison-Cox

Paola Sebastiani

Peter Solymos

Kazuki Yoshida

Geoff Jones

Sarah Pirikahu

Simon Firestone

Ryan Kyle

Johann Popp

Mathew Jay

Allison Cheung

Nagendra Singanallur

Aniko Szabo

Ahmad Rabiee

epi.asc function

<dl> <dt>dat</dt>
<dd>a matrix with data suitable for plotting using the <code>image</code> function.</dd> <dt>file</dt>
<dd>character string specifying the name and path of the ASCII raster output file.</dd> <dt>xllcorner</dt>
<dd>the easting coordinate corresponding to the lower left hand corner of the matrix.</dd> <dt>yllcorner</dt>
<dd>the northing coordinate corresponding to the lower left hand corner of the matrix.</dd> <dt>cellsize</dt>
<dd>number, defining the size of each matrix cell.</dd> <dt>na</dt>
<dd>scalar, defines null values in the matrix. NAs are converted to this value.</dd></dl>

Arguments

Write matrix to an ASCII raster file — epi.asc

<dl>

 <dt>dat</dt>
<dd>a matrix with data suitable for plotting using the <code>image</code> function.</dd>

 <dt>file</dt>
<dd>character string specifying the name and path of the ASCII raster output file.</dd>

 <dt>xllcorner</dt>
<dd>the easting coordinate corresponding to the lower left hand corner of the matrix.</dd>

 <dt>yllcorner</dt>
<dd>the northing coordinate corresponding to the lower left hand corner of the matrix.</dd>

 <dt>cellsize</dt>
<dd>number, defining the size of each matrix cell.</dd>

 <dt>na</dt>
<dd>scalar, defines null values in the matrix. NAs are converted to this value.</dd>

</dl>

Write matrix to an ASCII raster file

epi.asc: Write matrix to an ASCII raster file

Description

Usage

Value

Arguments