Hello, I have a problem with the values for one column in a table. The variable represented in this column is numeric (I get TRUE when I ask is.numeric(x)). However, the values are listed ordinally and with row numbers as values, not with the ones that appear in the table. Some rows have an undefined value for this column, which appears as ? in the table (this is not an error). I wonder whether these undefined values are causing the problem. I need to extract a subset from this column with all rows not having '?' and then use the subset for a number if analysis. So far this is not possible since the subset does not have the real values, but the row numbers mentioned above. Any help? Thanks in advance, Francisco Torreira Francisco Torreira Spanish, Italian and Portuguese Univ. of Illinois at Urbana-Champaign 707 South Mathews Aven. 4031 FLB Urbana, IL, 61801
Problems with numeric variable containing ? values
2 messages · ftorrei2@uiuc.edu, Spencer Graves
2 days later
I'm very sorry, but I do not understand your question. If you are still waiting for an answer, may I suggest you PLEASE do read the posting guide! "http://www.R-project.org/posting-guide.html". This may help you formulate your question so it will be easier for someone else to understand what you are asking and provide a useful reply. spencer graves
ftorrei2 at uiuc.edu wrote:
Hello, I have a problem with the values for one column in a table. The variable represented in this column is numeric (I get TRUE when I ask is.numeric(x)). However, the values are listed ordinally and with row numbers as values, not with the ones that appear in the table. Some rows have an undefined value for this column, which appears as ? in the table (this is not an error). I wonder whether these undefined values are causing the problem. I need to extract a subset from this column with all rows not having '?' and then use the subset for a number if analysis. So far this is not possible since the subset does not have the real values, but the row numbers mentioned above. Any help? Thanks in advance, Francisco Torreira Francisco Torreira Spanish, Italian and Portuguese Univ. of Illinois at Urbana-Champaign 707 South Mathews Aven. 4031 FLB Urbana, IL, 61801
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