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Python import csv to list
...e as opposed to text mode. On some systems text mode means that \n will be convertes to platform-specific new line when reading or writing. See docs.
– Maciej Gol
May 24 '15 at 8:12
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How to save an HTML5 Canvas as an image on a server?
... context.strokeStyle = 'blue';
context.stroke();
</script>
Convert canvas image to URL format (base64)
var dataURL = canvas.toDataURL();
Send it to your server via Ajax
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}...
Meaning of -
...stem to interpret those bytes as actual characters (and so display them or convert them to another encoding), it needs to know the encoding used in the XML.
Since most common encodings are compatible with ASCII, as far as basic alphabetic characters and symbols go, in these cases, the declaration i...
Plotting two variables as lines using ggplot2 on the same graph
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The general approach is to convert the data to long format (using melt() from package reshape or reshape2) or gather()/pivot_longer() from the tidyr package:
library("reshape2")
library("ggplot2")
test_data_long <- melt(test_data, id="date") # co...
How to execute raw SQL in Flask-SQLAlchemy app
...lumn']) # Access by column name as a string
r_dict = dict(r.items()) # convert to dict keyed by column names
Personally, I prefer to convert the results into namedtuples:
from collections import namedtuple
Record = namedtuple('Record', result.keys())
records = [Record(*r) for r in result.fet...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
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I'd just run the code if I were you. escape converts string in the one that does only contain url valid characters. That prevents the errors.
– Tomáš Zato - Reinstate Monica
Nov 24 '14 at 22:37
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What is in your Mathematica tool bag? [closed]
...hell input cell type that passes the contained expression to the operating system shell for evaluation.
First, define a function that delegates evaluation of a textual command to the external shell:
shellEvaluate[cmd_, _] := Import["!"~~cmd, "Text"]
The second argument is needed and ignored for ...
Calculate the center point of multiple latitude/longitude coordinate pairs
...on of the approach recommended there for spherical coordinates would be:
Convert each lat/long pair into a unit-length 3D vector.
Sum each of those vectors
Normalise the resulting vector
Convert back to spherical coordinates
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Store JSON object in data attribute in HTML jQuery
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The nice thing is that the string in the data- attribute is automatically converted to a JavaScript object. I don't see any drawback in this approach, on the contrary! One attribute is sufficient to store a whole set of data, ready to use in JavaScript through object properties.
(Note: for the dat...
Parsing HTML into NSAttributedText - how to set font?
...ttribute with value in hex string format color: #000000. See this link for converting UIColor to hex string: gist.github.com/yannickl/16f0ed38f0698d9a8ae7
– Miroslav Hrivik
Aug 16 '17 at 14:19
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