SHANE MILLER, BLOOMBERG/ 731 LEXIN
2009-Apr-08 14:15 UTC
[R] default print format for large numbers
Numbers like ``1239178547.653775" is inserted into a vector. I print the vector:> route_9_80_end[1] 1239178522 1239178526 1239178524 1239178524 1239178524 1239178523 1239178524 1239178522 1239178521 1239178565 1239178566 1239178566 [13] 1239178565 1239178566 1239178566 1239178565 1239178566 1239178566 and the decimals are suppressed. While R is wonderful and wonderfully documented, I can only find some quasi relavent information on options(digits) or some such as might apply here. How can I force R to print some part of the decimal i.e. back to 1239178547.653775? TIA, Shane
Richard.Cotton at hsl.gov.uk
2009-Apr-08 14:47 UTC
[R] default print format for large numbers
> Numbers like ``1239178547.653775" is inserted into a vector. I print > the vector: > > > route_9_80_end > [1] 1239178522 1239178526 1239178524 1239178524 1239178524 > 1239178523 1239178524 1239178522 1239178521 1239178565 12391785661239178566> [13] 1239178565 1239178566 1239178566 1239178565 1239178566 1239178566 > > and the decimals are suppressed. While R is wonderful and > wonderfully documented, I can only find some quasi relavent > information on options(digits) or some such as might apply here. How > can I force R to print some part of the decimal i.e. back to > 1239178547.653775?When you create the vector, each number is stored as a double-precision floating point number. When you type the name of the variable the print function is called, which displays the numbers on the console. You can also manually call the print function, and set the digits argument to a high number to show all digits. If you want to see all the digits every time any number is displayed, use options(digits). For example: x <- 1239178547.653775 x # [1] 1239178548 print(x) # [1] 1239178548 print(x, digits=20) # [1] 1239178547.653775 options(digits=20) x # [1] 1239178547.653775 Note that the accuracy of the floating point numbers is limited to .Machine$double.eps, which is typically 2.2e-16. Regards, Richie. Mathematical Sciences Unit HSL ------------------------------------------------------------------------ ATTENTION: This message contains privileged and confidential inform...{{dropped:20}}