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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
...tional to y. polyfit supports weighted-least-squares via the w keyword argument.
>>> x = numpy.array([10, 19, 30, 35, 51])
>>> y = numpy.array([1, 7, 20, 50, 79])
>>> numpy.polyfit(x, numpy.log(y), 1)
array([ 0.10502711, -0.40116352])
# y ≈ exp(-0.401) * exp(0.105 * ...
Can't import my own modules in Python
I'm having a hard time understanding how module importing works in Python (I've never done it in any other language before either).
...
Database design for audit logging
Every time I need to design a new database I spend quite some time
thinking on how I should set up the database schema to keep an audit log of
the changes.
...
How do I loop through a date range?
I'm not even sure how to do this without using some horrible for loop/counter type solution. Here's the problem:
16 Answer...
JavaScript: Passing parameters to a callback function
I'm trying to pass some parameter to a function used as callback, how can I do that?
13 Answers
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Bower: ENOGIT Git is not installed or not in the PATH
...t. Please check where yours is before continuing.
Open the Windows Environment Variables/Path Window.
Right-click on My Computer -> Properties
Click Advanced System Settings link from the left side column
Click Environment Variables in the bottom of the window
Then under System Variables look ...
Do you get charged for a 'stopped' instance on EC2? [closed]
...
No.
You get charged for:
Online time
Storage space (assumably you store the image on S3 [EBS])
Elastic IP addresses
Bandwidth
So... if you stop the EC2 instance you will only have to pay for the storage of the image on S3 (assuming you store an image ofcou...
Outlook autocleaning my line breaks and screwing up my email format
I'm sending an email using the dotnet framework. Here is the template that I'm using to create the message:
11 Answers
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Check if a number has a decimal place/is a whole number
... != 0
// 23 % 1 = 0
// 23.5 % 1 = 0.5
Note that this is based on the numerical value of the number, regardless of format. It treats numerical strings containing whole numbers with a fixed decimal point the same as integers:
'10.0' % 1; // returns 0
10 % 1; // returns 0
'10.5' % 1; // returns 0....
Setting the zoom level for a MKMapView
...ck. Use MKCoordinateRegionMakeWithDistance in order to set the distance in meters vertically and horizontally to get the desired zoom. And then of course when you update your location you'll get the right coordinates, or you can specify it directly in the CLLocationCoordinate2D at startup, if that's...