Convert matrix to numeric

Nordlund, Dan (DSHS/RDA) · 2011-08-03T19:28:19Z

> -----Original Message----- > From: r-help-bounces at r-project.org [mailto:r-help-bounces at r- > project.org] On Behalf Of Ken > Sent: Wednesday, August 03, 2011 12:13 PM > To: Jeffrey Joh > Cc: > Subject: Re: [R] Convert matrix to numeric > > How about > Matrix[1:5,]=as.numeric(Matrix[1:5,]) > -Ken Hutchison > > On Aug 3, 2554 BE, at 3:04 PM, Jeffrey Joh > wrote: > > > > > I have a matrix that looks like this: > > > > > > structure(c("

Nordlund, Dan (DSHS/RDA)

Wed, Aug 3, 2011 12:28 PM

Ken,

You can't store the numeric values back in the matrix, because rows 6 and 7 contain character values.  Everything will just be converted back to character.  You need to create a new matrix for the numeric values.

Hope this is helpful,

Dan

Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA 98504-5204

Thread (6 messages)

Jeffrey Joh Convert matrix to numeric Aug 3 Duncan Murdoch Convert matrix to numeric Aug 3 Kenneth Takagi Convert matrix to numeric Aug 3 Sarah Goslee Convert matrix to numeric Aug 3 Nordlund, Dan (DSHS/RDA) Convert matrix to numeric Aug 3 David Winsemius Convert matrix to numeric Aug 3