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How to convert latitude or longitude to meters?
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For approximating short distances between two coordinates I used formulas from
http://en.wikipedia.org/wiki/Lat-lon:
m_per_deg_lat = 111132.954 - 559.822 * cos( 2 * latMid ) + 1.175 * cos( 4 * latMid);
m_per_deg_lon = 111132.954 * cos ( latMid );
.
In the code below I've left the raw numbers ...
Are nested try/except blocks in python a good programming practice?
...or:
raise AttributeError("The object doesn't have such attribute") from None
PS. has_key() has been deprecated for a long time in Python 2. Use item in self.dict instead.
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MySQL WHERE: how to write “!=” or “not equals”?
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DELETE FROM konta WHERE taken <> '';
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Correct format specifier for double in printf
...ote that this is one place that printf format strings differ substantially from scanf (and fscanf, etc.) format strings. For output, you're passing a value, which will be promoted from float to double when passed as a variadic parameter. For input you're passing a pointer, which is not promoted, so ...
Smart pointers: who owns the object? [closed]
...er. When you assign one pointer to another, the second 'steals' the object from the first.
I have my own implementation for these, but they are also available in Boost.
I still pass objects by reference (const whenever possible), in this case the called method must assume the object is alive only ...
Where do I find old versions of Android NDK? [closed]
...s like you can construct the link to the NDK that you want and download it from dl.google.com:
Linux example:
http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86.tar.bz2
http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86_64.tar.bz2
OS X example:
http://dl.google.com/android/ndk/and...
Cannot set content-type to 'application/json' in jQuery.ajax
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It would seem that removing http:// from the url option ensures the the correct HTTP POST header is sent.
I dont think you need to fully qualify the name of the host, just use a relative URL as below.
$.ajax({
type: "POST",
contentType: "applic...
How to set size for local image using knitr for markdown?
... png package for example and plot it like a regular plot using grid.raster from the grid package.
```{r fig.width=1, fig.height=10,echo=FALSE}
library(png)
library(grid)
img <- readPNG("path/to/your/image")
grid.raster(img)
```
With this method you have full control of the size of you image....
How do I create 7-Zip archives with .NET?
How can I create 7-Zip archives from my C# console application? I need to be able to extract the archives using the regular, widely available 7-Zip program.
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How to turn a String into a JavaScript function call? [duplicate]
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See my awnser for a generic method retrieving function from string, even if inside several closures. Ideal if you want to register callbacks inside DOM attributes.
– NGauthier
Jan 29 '14 at 13:53
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