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rgdal package installation
...on CRAN, you will see the following :
SystemRequirements: for building from source: GDAL >= 1.7.1 library
from http://trac.osgeo.org/gdal/wiki/DownloadSource and PROJ.4 (proj >= 4.4.9) from http://trac.osgeo.org/proj/; GDAL OSX frameworks built by William Kyngesburye at http://www.kyngch...
Why use Abstract Base Classes in Python?
...but a shared understanding of what those methods should do. If you inherit from this ABC, you are promising to follow all the rules described in the comments, including the semantics of the print() method.
Python's duck-typing has many advantages in flexibility over static-typing, but it doesn't sol...
How to subtract X days from a date using Java calendar?
Anyone know a simple way using Java calendar to subtract X days from a date?
10 Answers
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How to save a PNG image server-side, from a base64 data string
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You need to extract the base64 image data from that string, decode it and then you can save it to disk, you don't need GD since it already is a png.
$data = 'data:image/png;base64,AAAFBfj42Pj4';
list($type, $data) = explode(';', $data);
list(, $data) = explode(...
Differences between git pull origin master & git pull origin/master
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git pull origin master will pull changes from the origin remote, master branch and merge them to the local checked-out branch.
git pull origin/master will pull changes from the locally stored branch origin/master and merge that to the local checked-out branch. The ...
Get path from open file in Python
...h is still the correct file path. If I specify the filename as 'text.txt' from directory '~/Documents/' and then change directories to '~/', os.path.realpath will return '~/text.txt' instead of '~/Documents/text.txt'.
– K. Nielson
Jan 16 '19 at 21:08
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How to force link from iframe to be opened in the parent window
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+1 from me, base target="_parent" works but target="_parent" has never failed for me!
– user903601
Mar 14 '12 at 5:18
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How do I convert between big-endian and little-endian values in C++?
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__builtin_bswapX is only available from GCC-4.3 onwards
– Matt Joiner
Dec 17 '09 at 4:18
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Single Line Nested For Loops
...ften faster than using a for loop.
Look at this longer list comprehension from the tutorial (the if part filters the comprehension, only parts that pass the if statement are passed into the final part of the list comprehension (here (x,y)):
>>> [(x, y) for x in [1,2,3] for y in [3,1,4] if...
How to remove an element from an array in Swift
How can I unset/remove an element from an array in Apple's new language Swift?
18 Answers
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