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How to convert a NumPy array to PIL image applying matplotlib colormap
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Quite a busy one-liner, but here it is:
First ensure your NumPy array, myarray, is normalised with the max value at 1.0.
Apply the colormap directly to myarray.
Rescale to the 0-255 range.
Convert to integers, using np.uint8().
Use Image.fromarray().
And you're done:
from PIL import Im...
Unpacking array into separate variables in JavaScript
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You can use array's apply function if you want an array items to be passed as a function arguments.
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How to build query string with Javascript
...but it fits my needs.
function form_params( form )
{
var params = new Array()
var length = form.elements.length
for( var i = 0; i < length; i++ )
{
element = form.elements[i]
if(element.tagName == 'TEXTAREA' )
{
params[element.name] = element....
Using Java 8 to convert a list of objects into a string obtained from the toString() method
...end your list items in a StringBuilder
List<Integer> list = new ArrayList<>();
list.add(1);
list.add(2);
list.add(3);
StringBuilder b = new StringBuilder();
list.forEach(b::append);
System.out.println(b);
you can also try:
String s = list.stream().map(e -> ...
What's better at freeing memory with PHP: unset() or $var = null
...loop destroys and recreates the same symbol. If the test is redone with an array unset is faster. I have a test which later checks for existence in the unset case. In that test setting it to null is marginally faster. Test: pastebin.com/fUe57C51
– Knyri
Jul 19 ...
How do I read configuration settings from Symfony2 config.yml?
...class MyNiceProjectExtension extends Extension
{
public function load( array $configs, ContainerBuilder $container )
{
// The next 2 lines are pretty common to all Extension templates.
$configuration = new Configuration();
$processedConfig = $this->processConfigura...
Simple Digit Recognition OCR in OpenCV-Python
... is pressed, it resizes this box to 10x10 and saves 100 pixel values in an array (here, samples) and corresponding manually entered digit in another array(here, responses).
Then save both the arrays in separate txt files.
At the end of manual classification of digits, all the digits in the train d...
Getting the last argument passed to a shell script
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Note: This answer works for all Bash arrays, unlike ${@:$#} which only works on $@. If you were to copy $@ to a new array with arr=("$@"), ${arr[@]:$#} would be undefined. This is because $@ has a 0th element that isn't included in "$@" expansions.
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Immutable class?
...change the state of the object.
For example, allowing an reference to an array or ArrayList to be obtained through an getter will allow the internal state to change by changing the array or collection:
class NotQuiteImmutableList<T> {
private final List<T> list;
public NotQuiteIm...
How to find Array length inside the Handlebar templates?
...mplate which is rendered using a json object. In this json I am sending an array. Like this:
4 Answers
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