search for: iravani

Displaying 3 results from an estimated 3 matches for "iravani".

2006 Oct 12
3
Cross two dataframe
Dear r-users! I would like to cross two data frame which have the same row number but different in the number of column. Can anybody help me for this case ? Thanks a lot in advance -------------------------------------------------------------------------------- Majid Iravani PhD Student Swiss Federal Research Institute WSL Research Group of Vegetation Ecology Z?rcherstrasse 111 CH-8903 Birmensdorf Switzerland Phone: +41-1-739-2693 Fax: +41-1-739-2215 Email: Majid.iravani at wsl.ch http://www.wsl.ch/staff/majid.iravani/
2006 Oct 13
3
multiply two matrixes with the different dimension column by column
...39;s not easy to do it in Excel and I'm looking for a command in R to prepare a new data frame for more analysis. So I would greatly appreciate if anybody can help me in this case. Thanks in advance Majid -------------------------------------------------------------------------------- Majid Iravani PhD Student Swiss Federal Research Institute WSL Research Group of Vegetation Ecology Z?rcherstrasse 111 CH-8903 Birmensdorf Switzerland Phone: +41-1-739-2693 Fax: +41-1-739-2215 Email: Majid.iravani at wsl.ch http://www.wsl.ch/staff/majid.iravani/
2007 Feb 01
2
How can I calculate conditional mean in a large dataset including date data
...f years. As the number of days in some months is different from others I could not write appreciate command for this. Therefore I would greatly appreciate if somebody can help me in this case Thank you Majid -------------------------------------------------------------------------------- Majid Iravani PhD Student Swiss Federal Research Institute WSL Research Group of Vegetation Ecology Z?rcherstrasse 111 CH-8903 Birmensdorf Switzerland Phone: +41-1-739-2693 Fax: +41-1-739-2215 Email: Majid.iravani at wsl.ch http://www.wsl.ch/staff/majid.iravani/