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Factors in R: more than an annoyance?

...ns that are factors using gdata require(gdata) drop.levels(dataframe) I know that it is straightforward to recode levels of a factor and to rejig the labels and there are also wonderful ways to reorder the levels. My brain just cannot remember them and I have to relearn it every time I use it. Rec...
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How to change the order of DataFrame columns?

... with a list of the columns, rearranged as needed. This is what you have now: In [6]: df Out[6]: 0 1 2 3 4 mean 0 0.445598 0.173835 0.343415 0.682252 0.582616 0.445543 1 0.881592 0.696942 0.702232 0.696724 0.373551 0.670208 2 0.662527 ...
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How can I change IIS Express port for a site

...icking the Create Virtual Directory button. Doing that made the different; now it works. But why is that necessary? – Rod Jun 1 '18 at 17:20 ...
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What are CFI directives in Gnu Assembler (GAS) used for?

... procedure B which then calls a common procedure C. Procedure C fails. You now want to know who actually called C and then you may want to know who called B. A debugger can unwind this stack by using the stack pointer (%rsp) and register %rbp, however it needs to know how to find them. That is whe...
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How to generate UML diagrams (especially sequence diagrams) from Java code?

...id, then install GEF from download.eclipse.org/tools/gef/updates/releases Now copy-paste licence from email to Window->Preferences->ObjectAid How to create diagram? objectaid.com/class-diagram – rluks Apr 5 '13 at 22:01 ...
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c# datatable insert column at position 0

does anyone know the best way to insert a column in a datatable at position 0? 3 Answers ...
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Pure JavaScript Graphviz equivalent [closed]

... was looking for in the original question. It is not just a RENDERER, it knows how to compute the directed graph as well. Is it running DOT on a backend somewhere, or is the entire graph generation algorithm running on my browser? – Armentage Jul 16 '12 at 1...
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Select DISTINCT individual columns in django?

... The method described below is now available in django 1.4 and is nice if you need ProductOrder instance with field aware distinct ;-) – Jonathan Liuti Oct 16 '12 at 15:03 ...
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Why is using onClick() in HTML a bad practice?

...L is a bad practice, because it's not good for semantics. I would like to know what the downsides are and how to fix the following code? ...
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How do I convert an existing callback API to promises?

...ferreds you can do the following (let's use Q for this example, although Q now supports the new syntax which you should prefer): function getStuffAsync(param) { var d = Q.defer(); getStuff(param, function(err, data) { if (err !== null) d.reject(err); else d.resolve(data); ...