<div dir="ltr"><span class="" style="border-collapse:separate;color:rgb(0,0,0);font-family:'Lucida Console';font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:15px;text-indent:0px;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(225,226,229)"><pre tabindex="0" class="" style="font-family:'Lucida Console';font-size:10pt!important;outline-style:none;outline-width:initial;outline-color:initial;border-style:none;border-width:initial;border-color:initial;white-space:pre-wrap!important;margin:0px;line-height:1.2">
<span class="" style="color:rgb(197,6,11)">This is the error I receive trying "BlaBla" instead of list(BlaBla)<br></span></pre><pre tabindex="0" class="" style="font-family:'Lucida Console';font-size:10pt!important;outline-style:none;outline-width:initial;outline-color:initial;border-style:none;border-width:initial;border-color:initial;white-space:pre-wrap!important;margin:0px;line-height:1.2">
<span class="" style="color:rgb(197,6,11)"><br>Error in `[.data.table`(data, , `:=`(percent, sum(freq)), by = byWhat) :
Type of RHS ('integer') must match LHS ('character'). To check and coerce would impact performance too much for the fastest cases. Either change the type of the target column, or coerce the RHS of := yourself (e.g. by using 1L instead of 1)</span></pre>
</span></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Aug 29, 2013 at 5:44 PM, Frank Erickson <span dir="ltr"><<a href="mailto:FErickson@psu.edu" target="_blank">FErickson@psu.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="im"><span style="font-family:arial,sans-serif;font-size:13px">Try "BlaBla" instead of list(BlaBla)</span><br>
<div><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div></div><div><span style="font-family:arial,sans-serif;font-size:13px">(oops, forgot to reply to the mailing list the first time I sent this. Sorry for the double email, Kostia.)</span></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote"><div class="im">On Thu, Aug 29, 2013 at 9:36 AM, Kostia Kofman <span dir="ltr"><<a href="mailto:kofmank@gmail.com" target="_blank">kofmank@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div><div><div><div><div><div><div>Hi,<br><br></div>I'm new to R and data.table and having some difficulties with a certain function that I wrote.<br>
</div><br></div>the function code:<br><br>freq_per = function(data,byWhat,month){<br>
for (i in 1:length(month)){<br> data = data.table(data)<br> data[,percent :=sum(freq),by = byWhat]<br> data[,percent := (freq/percent)*100]<br> data = data.frame(data)<br> data$percent = format(round(data$percent),nsmall = 2)<br>
}<br> data<br> <br>}<br><br></div>I have tried to call the function with freq_per(data,list(BlaBla),month) and get the error message from the topic.<br><br>I have tried to create a global variable with byWhat = list(BlaBla), it didn't work because the object 'BlaBla' not found.<br>
<br></div>I also tried to use keyby instead of by with c(colnames(data)[1]), but the results that I got are not right.<br><br></div>anybody has an idea how to overcome the problem?<br><br></div>Thanks.<br><div><div><div>
<div><div><div><div><br><br></div></div></div></div></div></div></div></div>
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