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What does axis in pandas mean?
...0,:,:] will refer to the 0-th slice, a[1,:,:] will refer to the 1-st slice etc.
a.sum(axis=0) will apply sum() along the 0-th axis of a. You will add all the slices and end up with one slice of shape (5,7).
a.sum(axis=0) is equivalent to
b = np.zeros((5,7))
for i in range(5):
for j in range(...
Media Queries: How to target desktop, tablet, and mobile?
...nd more semantic the DOM structure with nav, header, main, section, footer etc. (avoiding abominations like div class="header" with nested inner div tags) the easier it will be to engineer responsiveness, especially avoiding floats by using CSS Grid Layout (Sarah Drasner's grid generator is a great ...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
... easier ways to find linear transformations of this form, such as NMF, PCA etc. However, this is a case where a multi-layered network does NOT behave the same way as a single layer perceptron.
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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
...ed in postgresql only but also it other RDBMSs too like oracle, sql server etc.
– Mufachir Hossain
May 12 '19 at 4:32
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Append text to input field
...d text each time, so you end up with "more text" then "more textmore text" etc.
– James
Sep 8 at 15:59
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no
...ugh the Database Tuning Adviser which will suggest if you need any indexes etc. Link here msdn.microsoft.com/en-us/library/ms174202.aspx
– Kev Ritchie
Dec 22 '11 at 11:22
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How to change the color of an svg element?
...gt;
And in CSS use the no-svg class from Modernizr (CDN: http://ajax.aspnetcdn.com/ajax/modernizr/modernizr-2.7.2.js ) to check for SVG support. If there is no SVG support the SVG block will be ignored and the image will be displayed, otherwise the image will be removed from the DOM tree (display:...
mongodb count num of distinct values per field/key
...hie said is that if the grouping is done just "regular" field (string, int etc.) then you don't need the unwind step. Isn't it correct?
– guyarad
Oct 19 '17 at 10:00
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How to deserialize a list using GSON or another JSON library in Java?
...ArrayList that doesn't implement some useful methods like add(), delete(), etc. If you call them an UnsupportedOperationException will be thrown.
In order to get real ArrayList instance you need to write something like this:
List<Video> = new ArrayList<>(Arrays.asList(videoArray));
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How to set RelativeLayout layout params in code not in xml?
...n1 or button2. Secondly, dynamically declared Views (ImageViews, Buttons, etc.) get instantiated with an id of -1. An id of -1 will not work for a rule.
– Craig B
Dec 6 '11 at 17:38
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