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POChange data.frame format to label all columns
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I have run into this problem before and had a lengthy work around, now I thought to post here. Thanks in advance! I am trying to <code>merge()</code> the following small data.frame (named HelpData) with a much larger data.frame (not included). The code below reads in HelpData, and looks at the <code>head()</code> and the <code>str()</code>. <pre><code>HelpData <- structure(list(`(Intercept)` = c(-0.416714383410771, -0.484420889203111, 0.8852233181836, -0.00573901277840992, 0.819352447999715, -0.0219740206432874, -0.725659038472068, 0.842129479134587, 0.231330671497113, 1.67161285063258, 0.562139877718068, -0.56702368527195, -1.09763116254353, -0.32410756195596, 0.166964590752782, -0.812461815971089, -0.609301958979508, 0.368263149194526, 0.964304770606394, -0.887610418600415, -0.555998527038864, -0.0940912475713328, 0.706094048452952, -0.500888453405431)), .Names = "(Intercept)", row.names = c("CAL_F01", "CAL_F17", "CAL_F19", "CAL_F23", "CAL_F43", "CAL_M33", "CAL_M36", "COL_P01", "COL_P03", "COL_P05", "COL_P06", "COL_P07", "COL_P08", "COL_P09", "COL_P10", "COL_P12", "COL_P13", "PAT_F02", "PAT_F03", "PAT_F04", "PAT_F05", "PAT_M02", "PAT_M03", "PAT_M04"), class = "data.frame") head(HelpData) str(HelpData) </code></pre> As seen in the <code>str()</code> of HelpData, the object is a data frame with 24 obs. of 1 variable. The “Intercept” column is the only one that is recognized. However I want to <code>merge()</code> based on the AnimalID field which is not labeled. The code below results in the error Code: <pre><code> colnames(HelpData)<- c("CougarID", "RandInt") </code></pre> Error: <pre><code> “'names' attribute [2] must be the same length as the vector [1]” This the first coumne is not regonized and thus cannot be named. </code></pre> What is the best what to change the data format so I can have the same two columns, but the ability to name the first? Cheers.
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Change data.frame format to label all columns
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