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Order discrete x scale bm>y m> frequencm>y m>/value
... need as limits parameter to scale_x_discrete. I think it is prettm>y m> simple m>and m> straightforward solution.
ggplot(mtcars, aes(factor(cm>y m>l))) +
geom_bar() +
scale_x_discrete(limits=c(8,4,6))
share
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vertical & horizontal lines in matplotlib
I do not quite understm>and m> whm>y m> I am unable to create horizontal m>and m> vertical lines at specified limits. I would like to bound the data bm>y m> this box. However, the sides do not seem to complm>y m> with mm>y m> instructions. Whm>y m> is this?
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What does the star operator mean, in a function call?
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s = sum(1, 2)
The double star ** does the same, onlm>y m> using a dictionarm>y m> m>and m> thus named arguments:
values = { 'a': 1, 'b': 2 }
s = sum(**values)
m>Y m>ou can also combine:
def sum(a, b, c, d):
return a + b + c + d
values1 = (1, 2)
values2 = { 'c': 10, 'd': 15 }
s = sum(*values1, **values2)
w...
How to update Pm>y m>thon?
... 2012. I can't find anm>y m> consensus on whether I should completelm>y m> uninstall m>and m> wipe this version before putting on the latest version.
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How to test if a string is JSON or not?
I have a simple AJAX call, m>and m> the server will return either a JSON string with useful data or an error message string produced bm>y m> the PHP function mm>y m>sql_error() . How can I test whether this data is a JSON string or the error message.
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Whm>y m> is there huge performance hit in 2048x2048 versus 2047x2047 arram>y m> multiplication?
...L is alwam>y m>s power of 2.
The six comes from fact that 2^6 == 64 bm>y m>tes is stm>and m>ard size of cache line.
Now what does this mean? Well it means that if I have address X m>and m> address m>Y m> m>and m>
(X >> 6) - (m>Y m> >> 6) is divisible bm>y m> L (i.e. some large power of 2), them>y m> will be stored in the same ca...
Center a popup window on screen?
...: It will also work on windows that aren't maxed out to the screen's width m>and m> height now thanks to @Frost!
If m>y m>ou're on dual monitor, the window will center horizontallm>y m>, but not verticallm>y m>... use this function to account for that.
const popupCenter = ({url, title, w, h}) => {
// Fixes dua...
Linux bash: Multiple variable assignment
...good point, though I'm not sure if one needs the return status of echo commm>and m> :-) I think at the time of writing the answer bash supporting this sm>y m>ntax was less common (as in installed bm>y m> default), though I'm not 100% sure.
– Michael Krelin - hacker
Oct 21 '15...
Can't find a “not equal” css attribute selector
...v foo="z">ZZZ</div>
div:not([foo='']) will select both the first m>and m> second div elements. If m>y m>ou onlm>y m> want div elements that have an attribute foo that is set to an emptm>y m> string, m>y m>ou should use:
div[foo]:not([foo=''])
If m>y m>ou want all elements with attribute foo that is neither m>y m> nor z, m>y m>...
Converting RGB to gram>y m>scale/intensitm>y m>
... from RGB to gram>y m>scale, it is said that specific weights to channels R, G, m>and m> B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
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