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pandas GroupBy columns with NaN (missing) values
...s far result in potentially dangerous behavior as it is quite possible you select a dummy value that is actually part of the dataset. This is increasingly likely as you create groups with many attributes. Simply put, the approach doesn't always generalize well.
A less hacky solve is to use pd.drop_...
How can I use a DLL file from Python?
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Next;
Application type -> DLL;
Additional options -> Empty project (select);
Additional options -> Precompiled header (unselect);
Project -> Properties -> Configuration Manager -> Active solution platform: x64;
Project -> Properties -> Configuration Manager -> Active solu...
Check if list contains element that contains a string and get that element
...how, but still it will display the first item of the list because you have selected firstordefault.
– Dirty Developer
Apr 20 '17 at 1:29
1
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How to make grep only match if the entire line matches?
...ngs
Interpret PATTERN as a (list of) fixed strings
-x, --line-regexp
Select only those matches that exactly match the whole line.
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How do I determine k when using k-means clustering?
...core
range_n_clusters = [2, 3, 4] # clusters range you want to select
dataToFit = [[12,23],[112,46],[45,23]] # sample data
best_clusters = 0 # best cluster number which you will get
previous_silh_avg = 0.0
for n_clusters in range_n_clusters:
clusterer = KMeans...
How to Copy Contents of One Canvas to Another Canvas Locally
... are building a website that uses lots of image/canvas operations.
// select canvas elements
var sourceCanvas = document.getElementById("some-unique-id");
var destCanvas = document.getElementsByClassName("some-class-selector")[0];
//copy canvas by DataUrl
var sourceImageData = ...
How to create a directory using nerdtree
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Pressing m would open a menu below and you can select from a list of actions.
NERDTree Menu. Use j/k/enter and the shortcuts indicated
==========================================================
> (a)dd a childnode
(m)ove the current node
(d)elete the current node
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How to dynamically create CSS class in JavaScript and apply?
...ml5 app, which will have writing on a canvas, and I want to let my user to select from a wide range of fonts to use. Rather than having a loooong css with all the font, I'm planning on creating a backend where I'll just upload the font data and whenever the program is loaded, a little call to a web...
UINavigationBar Hide back Button Text
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In the interface builder, you can select the navigation item of the previous controller and change the Back Button string to what you'd like the back button to appear as. If you want it blank, for example, just put a space.
You can also change it with this l...
LINQ Distinct operator, ignore case?
..."One", "Two", "Three", "three", "Four", "Five" };
var z = (from x in list select new { item = x.ToLower()}).Distinct();
z.Dump();
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